-
Hypoproliferative Anemia
90% production problem (bone marrow fails to respond to anemia)
-
Hyperproliferative Anemia
bone marrow is not able to compensate for blood loss or destruction by ramping up RBC production
-
Microcytic Anemia
- decreased RBC production;
- severe due to either iron deficiency or thalassemia
- (also chronic inflammation or sideroblastic)
-
Normocytic Anemia
decreased RBC production
-
Macrocytic Anemia
- decreased RBC production;
- severe is either B12 or folate deficiency or occ MDS
-
Thalassemia
hereditary disorders which affect the production of globin chains (alpha or beta)
-
Alpha Thalassemia
due to gene deletion causing a reduction in alpha chain synthesis (severity depends on how many deletions)
-
Beta Thalassemia
due to gene mutations which cause RBC membrane damage which can lead to hemolysis
-
Iron Deficiency Anemia
most common cause of anemia; diet (foods, caloric intake, absorptive capacity, increased loss*, increased requirements)
-
Anemia of Chronic Disease
- liver disease,
- acute or chronic infection (HIV),
- chronic inflammation,
- hypothyroidism,
- renal disease (hypertensive/diabetic),
- cancer (could be result of reduced erythropoietin stimulation)
-
Sideroblastic Anemia
- Enzyme disorder in which body has adequate iron, but is unable to incorporate it into Hgb (iron accumulates in mitochondria of RBC);
- can be inherited, acquired or idiopathic
-
B12 Deficiency
- B12 must come from diet (2000-5000mcg of stored B12 in liver so takes 3+ yrs to become deficient);
- inadequate intake,
- malabsorption* (intrinsic factor, gut or Rx);
- pernicious (familial)
-
Folate Deficiency
- total body stores are 5-20mg so deficiency can occur in a matter of months;
- inadequate intake*,
- increased requirements,
- malabsorption,
- impaired metabolism;
- Rx interactions
-
Pure Red Cell Aplasia
- rare;
- either idiopathic or acquired;
- autoimmune disease mediated by T cells or rarely IgG antibody;
- thymoma, lymphoid malignancies, solid tumors, SLE, RA, infections, medications
-
Aplastic Anemia
- bone marrow failure bc of injury or suppression of hematopoietic stem cell;
- acquired (Rx, chemo, radiotherapy, chemicals, viruses, preggers, lupus, gvhd);
- hereditary rare;
- idiopathic*
-
Hemolytic Anemias
- RBCs are destroyed either episodically or continuously;
- anemia results when bone marrow is not able to keep up with rate of destruction;
- cause of destruction is either due to an intrinsic defect or some external factor
-
Hereditary Spherocytosis
inherited abnormality of RBC membrane (molecular defect in spectrin protein)
-
Paroxysmal Nocturnal Hemoglobinuria
acquired stem cell disorder making RBC membrane prone to lysis by complement (due to lack of special proteins)
-
Glucose 6 Phosphate Dehydrogenase Deficiency
- hereditary enzyme defect causing episodic hemolytic anemia related to oxidative stress;
- X linked recessive (200 million affected worldwide)
-
Sickle Cell Disorders
- Hgb S; autosomal recessive;
- onset in first year of life when Hgb F levels fall;
- avg life expectancy 40-50 yrs;
- trait have no anemia
-
Autoimmune Hemolytic Anemia
- acquired disorder which IgG autoantibody formed that binds to RBC membrane and causes destruction in spleen and liver;
- 50% idiopathic;
- occurs at all ages
-
Cold Agglutinin Disease
- acquired hemolytic anemia due to IgM autoantibody;
- only reacts at temperature lower than 37degreesC;
- IgM binds with complement which causes destruction of RBC within liver;
- most idiopathic
-
Neutropenia
bone marrow disorder or peripheral disorders
-
Polycythemia Vera (PCV)
- myeloproliferative disorder;
- increased RBCs resulting from a clonal multipotent hematopoietic stem cell defect;
- primary: true increase,
- secondary: increase due to another condition such as hypoxia, renal disease, MI's, dehydration..
-
Thrombocytosis
- increased sensitivities to cytokines which stimulate bone marrow cell proliferation and growth;
- decreased inhibition of plt inhibiting factors;
- defects in cellular microenvironment;
- JAK-2 mutations
-
Myelofibrosis
- cause unknown;
- bone marrow is replaced with scar tissue, leading to anemia and eventually marrow failure;
- an abnormal myeloid precursor is believed to give rise to dysplastic megakaryocytes that produce increased fibroblast factors
-
Myelodysplastic Syndrome
- acquired clonal disorders of the hematopoietic stem cell;
- affect one or more cell lines;
- occurs b/c blood cells do not develop into mature cells so they are not released into blood and accumulation of immature cells occur in bone marrow
-
Multiple Myeloma
- etiology unknown; plasma cells crowd out other cells in bone marrow;
- collection in bone marrow = myeloma,
- multiple collections seen as multiple bone lesions = multiple myeloma
-
Monoclonal Gammopathy of Unknown Significance (MGUS)
- IgG spike;
- M spike stable
-
Waldenström’s Macroglobulinemia
- malignancy of B cells;
- causes overproduction of monoclonal macroglobulin (IgM)
-
Chronic Lymphocytic Leukemia
- most common leukemia;
- clonal proliferation and accumulation of mature-appearing B cells in blood and lymphoid tissue
-
Chronic Myelogenous Leukemia
- too many WBCs/granulocytic cells made in bone marrow (esp myeloid cells);
- 3 phases defined by the # of blasts in marrow (chronic, accelerated, acute);
- blast crisis when blasts compromise >30% of bone marrow cells;
- accounts for 7-20% of leukemia
-
Acute Lymphoblastic Leukemia
- neoplasm of immature lymphoblasts w markers of B or T cell lineage;
- bone marrow (>20%) and peripheral blood (>10%) and frequently in the liver, spleen, lymph nodes and other organs;
- common in children
-
Acute Myelogenous Leukemia
can be associated with exposure to toxins (benzenes, radiation, chemo)
-
Hodgkin's Lymphoma
usually arises in single area and spreads to contiguous
-
Non-Hodgkin's Lymphoma
- 5th most common malignancy in the US;
- arise from cells residing in lymphoid tissue (90% of cases arise from B cells);
- incidence higher in pts with immunodeficiencies
-
Infectious Mononucleosis
EBV
-
Ehrlichiosis
tick-borne Ehrlichiae bacteria
-
Histoplasmosis
intracellular fungus Histoplasma capsulatum
-
Acute Thrombocytopenia
decrease in plt count due to: decreased production (bone marrow), increased destruction (meds, immune mediated), sequestration (splenomegaly)
-
Idiopathic (Immune) Thrombocytopenic Purpura
- antibodies form and destroy plts (underlying illness: lupus, lymphoma, etc);
- increased bone marrow production but cannot keep up with destruction
-
Heparin Induced Thrombocytopenia
transient decrease in plt count (type I) or immune mediated (type II, is subset of ITP)- dev'p antibodies to FIV
-
Thrombotic Thrombocytopenic Purpura
- disorder of von Willebrand Factor processing;
- causes intra-vascular plt aggregation;
- leads to systemic manifestations (CNS, renal, cardiac, hematologic)
-
Hemolytic Uremic Syndrome
- related to TTP;
- associated with infectious diarrhea;
- RBCs destroyed and kidneys stop function
-
Coagulation: prolonged PT
- deficiency in FVII and common pathway factors (FI, FII, FV, FX);
- caused by liver disease, warfarin therapy, vitamin K deficiency, inhibitor to FVIIa
-
Liver Disease (prolonged PT)
liver is where you make all of your factors except for FVIII
-
Vitamin K deficiency (prolonged PT)
- have to have vitamin K in liver to make clotting factors (esp II, VII, IX, X) and Protein C and S (these are naturally occuring anticoagulants in body);
- causes of deficiency: biliary tract disease, Rx, malnutrition
-
Coagulation: prolonged aPTT
deficiency in intrinsic (HMWK, PK, FXII, FXI, FIX. FVIII) and common pathway factors; caused by heparin and DTI therapy, inhibitors to coagulation factors
-
von Willebrand Disease
- most common hereditary bleeding disorder (1%);
- mucocutaneous bleeding;
- deficient in vWF quantity or quality (defect in plt adhesion);
- have enough plts but not functioning properly
-
Glanzmanns thrombasthenia
- rare autosomal recessive disorder;
- have enough plts but not functioning properly;
- plts unable to aggregate due to defect in IIb/IIIa receptors
-
Bernard-Soulier
have enough plts but not functioning properly; reduced or abnormal plt vWF receptor
-
Acquired Thrombopathy
- have enough plts but not functioning properly;
- drugs ASA, NSAIDS, cephalosporins;
- renal disease;
- alcohol
- end-stage liver disease
-
Prothrombin 20210A Mutation
- elevated levels of prothrombin;
- leads to a modest increase in hyper-coaguability;
- second most common inherited cause of hypercoaguability
-
anticoagulation disorders
- Protein C or S deficiency;
- anti-phospholipid syndrome;
-
Disseminated Intravascular Coagulation
- excessive and uncontrolled thrombosis leading to bleeding manifestations;
- circulating plasma turns into serum;
- "consumptive coagulopathy" - forming clots and consuming all of the products needed to form clots
-
Hemophilia A
- low FVIII; X-linked recessive only in males;
- most common severe bleeding disorder
-
Hemophilia B
low FIX; X-linked recessive only in males
-
Reticulocyte count will be low (<2%)
Hypoproliferative Anemia
-
Reticulocyte count will be high (>3%)
Hyperproliferative Anemia
-
seen primarily in southeast Asian, Mediterranean or African descent
Alpha Thalassemia
-
seen primarily in Mediterranean (Italian, Greek) and less often in Asians and Africans
Beta Thalassemia
-
fatigue, dyspnea on exertion, tachycardia, nail changes, dysphagia, pica ; microcytic/hypochromic as iron stores depleted
Iron Deficiency Anemia
-
mild to moderate anemia; initially normocytic and moves to mild microcytic hypochromic due to defect in moving iron into RBCs
Anemia of Chronic Disease
-
may have enlarged spleen or liver; mild to moderate anemia
Sideroblastic Anemia
-
glossitis, anorexia, diarrhea, peripheral neuropathy
B12 Deficiency
-
malnourished appearing, diarrhea, cheilosis, glossitis, NO neurological symptoms; alcohol is most common precipitator due to impaired hepatic function
Folate Deficiency
-
severe anemic symptoms
Pure Red Cell Aplasia
-
any age; pancytopenia; fatigue, weakness, excess bleeding/bruising, petechiae, purpura, pallor
Aplastic Anemia
-
anemia may not be apparent until RBC life span becomes shortened to approx 20 days
Hemolytic Anemias
-
anemia, splenomegaly, jaundice; pigment type gallstones may be present; maybe chronic leg ulcers
Hereditary Spherocytosis
-
episodic hemolytic anemia will cause Fe deficiency as well; venous thrombosis; deficient hematopoiesis causing pancytopenia; reddish-brown urine
Paroxysmal Nocturnal Hemoglobinuria
-
episodic hemolysis often triggered by oxidative stress (infections, toxins or drugs); no splenomegaly; no chronic hemolytic anemia
Glucose 6 Phosphate Dehydrogenase Deficiency
-
pallor, jaundice, splenomegaly, leg ulcers, pigment gallstones, priapism; vascular occlusion leading to infarction
Sickle Cell Disorders
-
anemia can be rapid onset and severe
Autoimmune Hemolytic Anemia
-
mottled or numb fingers/toes; anemia is rarely severe
Cold Agglutinin Disease
-
stomatitis (ulcers in mouth); fever sometimes; severe infections such as septicemia, pneumonia and cellulitis may occur
Neutropenia
-
dyspnea, headaches, visual disturbances, tinnitus, pruritus, thromboses; PE shows retinal-vein occlusion, ruddy cyanosis and splenomegaly
Polycythemia Vera (PCV)
-
rare in children, slight female predominance; approx 1/3 or pts asymptomatic at diagnosis; 2/3 of pts report vasomotor symptoms or complications from thrombosis or bleeding
Thrombocytosis
-
early stages asymptomatic; later stages: general malaise, weight loss, splenomegaly or splenic infarction (LUQ pain); hepatomegaly in 50% of pts
Myelofibrosis
-
asymptomatic; abnormal blood counts during routine screening; if symptomatic: fatigue, bleeding, recurrent infections, fever, splenomegaly, pallor
Myelodysplastic Syndrome
-
fatigue/anemia, recurrent infections, lytic lesions predisposing pts to bone pain, pathologic fractures and hypercalcemia, kidney failure, hyperviscosity of blood;
Multiple Myeloma
-
probable precursor to multiple myeloma
Monoclonal Gammopathy of Unknown Significance (MGUS)
-
fatigue, hyperviscosity syndrome (nausea, vertigo, visual, mucosal or GI bleeding); weight loss, headache, cold hypersensitivity, peripheral neuropathy, hepatomegaly, splenomegaly, engorged retinal veins
Waldenström’s Macroglobulinemia
-
male 2: female 1; 25% asymptomatic at diagnosis; fatgue, drenching night sweats, weight loss, frequent and/or persistent infections, lymphadenopathy (80%), skin infections/shingles less common
Chronic Lymphocytic Leukemia
-
young to middle age adults; phily chromosome present in over 95% of cases; bcr-abl is another way of diagnosing CML; fever with no infection, bone pain, LUQ pain due to enlarged spleen, fatigue, weakness, night sweats, bleeding and brushing, petechiae
Chronic Myelogenous Leukemia
-
pts acutely sick over days/weeks, not months; primarily children's disease; can affect T or B cells; malaise, fatigue, fever, bleeding gums, lympadenopathy, splenomegaly, petechiae, weight loss, meningitis, lethargy, anorexia, dyspnea
Acute Lymphoblastic Leukemia
-
similar to ALL; pancytopenia with circulating blasts, bone marrow with >20% blasts; peripheral smears showing WBC with Auer Rods; hepatomegaly, splenomegaly, elevated erythrocyte sedimentation rate
Acute Myelogenous Leukemia
-
median age of onset is mid 50s; male 5: female 1; fatique, abd discomfort from splenomegaly
Hairy Cell Leukemia
-
enlargement of lymphoid tissue, spleen, liver; painless cervical, supraclavicular, and mediastinal lymphadenopathy; constitutional/b symptoms (fever, drenching night sweats, weight loss); shortness of breath common with mediastinal mass
Hodgkin's Lymphoma
-
Three grades: indolent (slow growing); intermediate (aggressive, mix of small to large cells); high grade (very aggressive); lymphadenopathy persistent and painless, isolated or difuse; B symtpoms; occasional ab pain, vomiting, bleeding, edema
Non-Hodgkin's Lymphoma
-
usually in immunocompromised pts; organism in neutrophils and monocytes on Wright-Giemsa stained blood film; organism in macrophages on bone marrow smear
Histoplasmosis
-
nose bleeds, gum bleeds, bruising, menorrhagia, petechia
Acute Thrombocytopenia
-
same as acute (no systemic illness, spleen normal); common in childhood, starts with viral infection and have it intermittently throughout life; adult form is chronic
Idiopathic (Immune) Thrombocytopenic Purpura
-
heparin for 4-10 days (if plt count drops more by half or more than assume HIT); inflammation/necrosis at subcutaneous sites, limb asymmetry, cool/pulseless extremities; arterial or venous thrombosis
Heparin Induced Thrombocytopenia
-
mental status changes and symptoms correlating to end-organ damage (fever +/- mild renal insufficiency); associated with some meds; rare disease, but really sick; most prevalent in young women
Thrombotic Thrombocytopenic Purpura
-
renal failure; no mental status changes; most common in infants, children and pregnant women
Hemolytic Uremic Syndrome
-
hepatic coagulopathy
Liver Disease (prolonged PT)
-
bruises easily, increased bleeding after minor procedures (dental), menorrhagia*
von Willebrand Disease
-
can act in concert with smoking, birth control pills/hormone replacement
Prothrombin 20210A Mutation
-
anti-phospholipid (recurrent thromboses, 2nd trimester miscarriages, thrombocytopenia, valvular heart disease, migraines)
anticoagulation disorders
-
excessive thrombosis + bleeding (bc using up clotting products), organ dysfunction, shock, death; can get subacute DIC (Trousseau's syndrome) - see recurrent superficial cloting and DVTs
Disseminated Intravascular Coagulation
-
spontaneous hemarthroses
Hemophilia A
-
MCV < 80
Microcytic Anemia
-
MCV 80-100
Normocytic Anemia
-
MCV > 100
Macrocytic Anemia
-
A Thal trait: HgB electrophoresis shows no increase in HgB A2 or F, no HgB H; usually diagnosed via exclusion; Hgb H: peripheral smear abnormal, high retic count b/c hemolysis is occuring and body is trying to keep up with rate of destruction
Alpha Thalassemia
-
Thal major: severe anemia, marrow expansion causes bony deformities, growth retardations, hepato-splenomegaly (HSM), iron overload, predom Hgb F;
Beta Thalassemia
-
Thal intermedia: can have bone abnormalities and HSM, iron overload, 10% HgbA2 and the rest is HgbF; Thal minor: Hgb can be 3g/dL below normal, smear can show basophilic stippling
Beta Thalassemia
-
look at stool to rule out occult blood loss; classically microcytic, although Hgb will drop before MCV; abnormal iron indices, low ferritin, absent marrow iron, abnormal peripheral blood smear(anisocytosis),
Iron Deficiency Anemia
-
plts may be increased; (serum iron < 30, TIBC > 400, % sat < 10, ferritin < 15, marrow iron 0); RDW high; serum iron and ferritin low b/c used up stores
Iron Deficiency Anemia
-
microcytic or normocytic morphology; retic count usually normal; serum iron and TIBC may be low, ferritin is normal or elevated; marrow iron stores normal;
Anemia of Chronic Disease
-
LOW EPO LEVEL (bone marrow is sluggish because the pt has an underlying disease); MCV not as low as iron deficiency
Anemia of Chronic Disease
-
MCV usually low normal or high; serum iron high; diagnosed by bone marrow showing ringed sideroblasts
Sideroblastic Anemia
-
RBCs are macrocytic with MCV 110-140; anemia may be severe w/coexisting thrombocytopenia and leukopenia; peripehral smear may show hypersegmented neutrophils;
B12 Deficiency
-
decreased retic count; B12 levels <100pg/ml in symptomatic pts; elevated methylmalonic acid (indicator of deficiency at tissue level); Schilling's test
B12 Deficiency
-
macrocytic; similar to B12 deficiency (MCV high); RBC folate levels less than 150ng/mL; RBC folate is better than serum folate
Folate Deficiency
-
reticulocytes low or absent, morphology normal, WBC and plts not affected, bone marrow is normocellular
Pure Red Cell Aplasia
-
decreased retic count; morphology and MCV usually normal, but hematopoietic progenitor and precursor cells are less than 1% normal levels; bone marrow is hypocellular but no abnormal cells are seen
Aplastic Anemia
-
haptoglobin levels low; LDH often elevated; hemoglobinuria; elevated indirect bilirubin; elevated retic count; stable or falling Hgb
Hemolytic Anemias
-
loss of central pallor in RBCs; anemia usually microcytic and mild to moderate or absent (bone marrow is usually able to compensate); reticulocytosis is present; indirect bili may be elevated; Coombs test negative
Hereditary Spherocytosis
-
flow cytometry assays demonstrating absence of CD59 Ab; anemia is variable, usually normocytic unless Fe deficiency present; episodic hemolysis is intravascular so will find hemoglobinuria
Paroxysmal Nocturnal Hemoglobinuria
-
peripheral smear shows bite cells and Heinz bodies; reticulocytosis and increased bili during acute hemolytic episode; enzyme assays for G6PD will be low during an acute crisis
Glucose 6 Phosphate Dehydrogenase Deficiency
-
chronic hemolytic anemia, very low Hgb around 7-10g/dL; sicked cells in peripheral smear (5-50% of total RBCs); reticulocytosis; nucleated RBCs; leukocytosis and thrombocytosis; indirect bili is high; hemoglobin electrophoresis
Sickle Cell Disorders
-
positive Coombs test; severe anemia (Hgb 6-10g/dL); elevated retic count; peripheral smear shows spherocytes and nucleated RBCs; elevated indirect bili; 10% may have concurrent immune thrombocytopenia
Autoimmune Hemolytic Anemia
-
mild reticulocytosis; see spherocytes in peripheral smear; coombs test positive for complement; positive fold agglutinin test
Cold Agglutinin Disease
-
neutrophil count lower than 1500/mcL; calculate absolute neutrophil count (ANC) (the lower the ANC the greater the risk for serious, life-threatening infections)
Neutropenia
-
increased number of RBCs/Hgb and perhaps increase in other cell types (but not as great as increase in RBCs); splenomegaly, systolic hypertension, engorged retinal veins;
Polycythemia Vera (PCV)
-
positive JAK-2 serum test in 74-97% of pts (use to confirm dx); peripheral blood often appears microcytic with or without iron deficiency
Polycythemia Vera (PCV)
-
Physical exam often unremarkable but sometimes: splenomegaly, hepatomegaly, leukocytosis, erythrocytosis, mild anemia; occasional immature precursor cells and/or large plts in peripheral smear; increased number of megakaryocytes in bmbx
Thrombocytosis
-
plt count very high (over 600,000);
Thrombocytosis
-
fibrosis in bone marrow (difficult to aspirate), giant plts, teardrop poikilocytosis in advanced cases, nucleated RBCs (hematopoietic precursors) may be found in peripheral blood;
Myelofibrosis
-
hypercellular bone marrow with reticulin or collagen fibrosis; WBC counts usually increased but highly variable; plt counts initially may be high, normal or decreased
Myelofibrosis
-
SPEP IgG moderately elevated
Monoclonal Gammopathy of Unknown Significance (MGUS)
-
IgM spike (monoclonal antibody spike); anemia; plasmacytic lymphocytes on bmbx; differentiated from MGUS by the presence of bone marrow infiltration; serum viscosity; bone radiographs normal; low RBCs, low plts, high SPEP
Waldenström’s Macroglobulinemia
-
lymphocytosis (WBC > 20,000); anemia, thrombocytopenia, peripheral blood with mature small lymphocytes and smudge cells; hepatomegaly, splenomegaly, lymphadenopathy; coexpression of CD19 and CD5; hypogammaglobulinemia
Chronic Lymphocytic Leukemia
-
transition from low grade lymphoma/CLL to a high grade/aggressive lymphoma
Richter’s transformation:
-
B-symptoms:
fever, wt loss, drenching night sweats
-
most common presentation of non-Hodgkin’s lymphoma (could also be Hodgkin Disease or CLL)
Painless, persistent lymphadenopathy
-
Reed-Sternberg cells
Hodgkin disease
-
Ringed sideroblasts or 5q- syndrome
Myelodysplastic Syndrome (MDS)
-
Teardrop cells
Myelofibrosis; Thalassemia major; Severe iron deficiency
-
Elevated HGB/HCT
PCV (polycythemia vera)
-
Test to confirm a suspected diagnosis if CBC abnormal
bone marrow biopsy
-
Important chemo side effects:
Adriamycin (cardiac toxicity)Vincristine (neuropathy)Bleomycin (pulmonary toxicity)
-
Monoclonal IgM paraprotein
Waldenström’s
-
Rouleaux
multiple myeloma
-
Lytic lesions
multiple myeloma
-
Urinary Bence-Jones proteins or Serum M-spike proteins
multiple myeloma
-
Philadelphia Chromosome (bcr/abl gene rearrangement)
CML (chronic myeloid leukemia)
-
Imatinib (Gleevec & ST1571), oral chemo
CML (chronic myeloid leukemia)
-
Blasts + Pancytopenia (decreased WBC, RBC, and plts)
acute leukemia (likely AML if adult, ALL if child)
-
Auer Rods in WBCs =
AML (Acute Myeloid Leukemia)
-
Most common leukemia in children
ALL (“all children”)
-
Most common occurring leukemia
CLL (Chronic Lymphocytic Leukemia)
-
Smudge cells
CLL (Chronic Lymphocytic Leukemia)
-
Collective term for all physiologic mechanisms the body uses to protect itself from blood loss. Constant balance of maintaining blood in the fluid state & stopping bleeding from injured sites
Hemostasis
-
failure to maintain hemostasis
Hemorrhage
-
failure to maintain fluidity
Thrombosis
-
4 Major Systems Involved in hemostasis
Vascular System; Platelets; Coagulation System; Fibrinolytic System
-
released, enhancing coagulation cascade & secondary (stable) hemostatic plug formation.
PF3 (Platelet factor 3)
-
potent stimulator of platelet aggregation & vasoconstriction
thromboxane A2
-
Intrinsic pathway: Factors
12, 11, 9 & 8 (evaluated by PTT)
-
Extrinsic pathway: Factors
7 (evaluated by PT)
-
Common pathway: Factors
1, 2, 5 & 10 (PT & PTT)
-
mild: no treatment; transfusion support; splenectomy; transplant; iron chelation therapy
Thalassemia
-
Hgb H: splenectomy may be helpful, folic acid to help with stability of RBC membrane
Alpha Thalassemia
-
Thal major: transfusions, splenectomy, iron chelation, allogeneic bone marrrow transplant for cure
Beta Thalassemia
-
evaluate and treat blood loss; oral iron supplements; encourage stool softeners; parenteral iron
Iron Deficiency Anemia
-
EPO injections + iron helpful for certain patients, but usually inadequate to maintain Hgb; transfusions are effective but multiple transfusions can generally cause problems down the road
Anemia of Chronic Disease
-
Deferoxamine (Desferal used at home, administered via IV or SQ for 12-16hrs/day; ascorbic acid (vit C) increases iron excretion used with deferoxamine (initiated 1-2 mos after chelator); deferasirox (Exjade) is an oral iron chelator but $$$
thalassemia
-
Anemia: morphology rel to MCV
<80 = microcytic; 80-100 = normo; >100 = macro
-
Diff Dx for micro anemia
TICS: thal, iron def, chronic inflammation, sideroblastic
-
Anemia: RBC production problem (vs destruction prob) distinguished by:
- Retic count;
- hypoproliferative = retic low (<2);
- hyper = retic high (>3)
-
Formula: corrected retic
% retic x HCT/45% = absolute % retics
-
Hypoproliferative anemia due to:
- Marrow damage,
- Fe def,
- dec'd stimulation
-
Hyperproliferative anemia due to:
BM failure to compensate for blood loss or RBC destruction
-
Degrees of thalassemia dz
- Hydrops fetalis = all 4 genes deleted (fatal);
- Hgb-H dz = 3 deleted (MCV=60-70);
- A-thal trait = 2 genes (MCV=70-80);
- silent carrier = 1 gene deleted
-
Thal: Hgb-H dz labs
- Hgb elect = 10-40% Hgb H;
- retic is high
-
Beta thal types
- Major (Cooley's): both beta globin genes mutated, severe anemia, txn dept;
- intermedia: txn in stress;
- minor rarely need txn
-
Tx for Hgb H dz
Splenectomy? & folic acid
-
Tx for beta thal major
- Txn, splenectomy, Fe chelation;
- allogeneic BM trans to cure
-
Most common cause of anemia worldwide
Fe def anemia
-
Causes of Fe def anemia
- Dec’d intake/ Poor diet;
- dec’d absorption;
- Inc’d loss (GI bleed, menorrhagia, neoplasm);
- Inc’d reqs (PG, lactation)
-
Tx for Fe def anemia
Oral Fe supplement (ferrous sulfate)
-
Anemia of chronic dz
- Mostly normal labs (poss microcytic);
- low erythropoietin;
- tx underlying dz & coexisting defs; epo?
-
Enzyme disorder: adequate Fe but can't get it into Hgb; Fe accumulates in ?
- Sideroblastic anemia;
- in RBC mitochondria
-
Sideroblastic findings
- High serum Fe, large spleen/liver;
- mod anemia, low MCV;
- BM sideroblasts
-
Tx: Sideroblastic anemia
- Dept on cause (ETOH, Pb, leukemia, TB Rx);
- txn/chelation
-
Macrocytic anemias
Folic acid def; B12 def
-
Causes of B12 def
- Diet (vegans);
- malabsorption: inadequate IF prodn (70%), terminal ileum dz (sprue, Crohns), tapeworm, drugs
-
S/S = Glossitis, periph neuropathy (Stocking-glove paresthesias); MCV 110-140; low retic, hyperseg PMNs, high methylmalonic a.
B12 def
-
Tx B12 def
- Replacement tx: IV B12;
- frontload dose
-
B12 def vs folic acid def
- B12: meat/dairy;
- to 5000 mcg in liver (3 yrs);
- Folic acid: fruit/veg; 5-20 mg stored (few mos)
-
Causes folic acid def
- Inadeq intake (ETOH, teens, elder);
- inc’d req: PG, malignancy, anemias, hemodialysis;
- Malabsorption [sprue, drugs (phenytoin, barbiturates)];
- Impaired metabolism (ETOH, methotrexate)
-
Folic acid def findings
- Malnourished;
- glossitis,
- cheilitis;
- NO neuro S/S;
- RBC folate <150 ng/mL
-
PRCA is contracted:
Acquired or idiopathic
-
Autoimmune dx mediated by T lymphocytes or (rarely) IgG antibody against erythroid precursors
PRCA
-
Poss causes include thymoma, solid tumors, SLE, RA, HIV/hep, phenytoin
PRCA
-
PRCA findings
- Normal lab except low retic;
- severe anemia S/S
-
PRCA Tx
- Stop all meds;
- poss thymoma resection;
- IV Ig
-
Due to BM failure (injury or suppression); pancytopenia
Aplastic anemia
-
Causes of aplastic anemia
- Idiopathic (50-65% ; likely autoimmune);
- Phenytoin, sulfonamides;
- chemotherapy, radiotherapy;
- benzene, solvents, insecticides;
- hep, HIV, EBV; PG, SLE, GVHD;
- Hereditary (rare): Fanconi’s anemia
-
Aplastic anemia findings
- NO hepatosplenomegaly;
- pancytopenia (purpura, pallor, petechiae);
- low retic;
- hypocellular BM
-
Aplastic anemia: diff dx from: 1-MDS; 2-hairy cell; 3-normo
- 1=abn cells;
- 2=splenomegaly & abn lymph cells;
- 3=SLE, hypersplenism, dissem'd infxn
-
Aplastic anemia tx
- Family HLA typing;
- supportive tx (txn/infxn);
- immunosuppn;
- GF;
- BM txplant
-
Aplastic anemia prognosis
- Untx'd = fatal;
- HLA matched txplant: 60-90% cure;
- ATG tx: partial remission 60-80% (1/3 relapse & 20-50% MDS)
-
Hemo anemias: intrinsic vs extrinsic
- Intrinsic = prob w/membrane, z defects, hgb (usu hereditary);
- Extrinstic = autoimmune, drugs or mechanical trauma (often acquired)
-
Reticulocytosis may reflect:
Hemolytic anemias
-
Hemo anemia lab findings
Low haptoglobin; high LDH, indirect bili (not >4-5mg/dL unless underlying liver dz), retic; hemoglobinuria; stable or falling hgb
-
Distinguishing Etiology of Hemolysis
- Clinical & FH;
- Direct Coombs;
- Peripheral blood smear;
- morpho (Heinz bodies, sickle cells, parasites);
- Hgb electrophoresis
-
Due to spectrin pro in cytoskeleton
Hereditary spherocytosis
-
Triad: anemia, splenomegaly and jaundice
Hereditary spherocytosis
-
Pigment type gallstones; chronic leg ulcers
Hereditary spherocytosis
-
Hereditary spherocytosis findings
- Mod micro anemia;
- reticulocytosis;
- high indirect bili;
- Neg Coombs
-
Hereditary spherocytosis tx
- Folic acid 1mg po qd;
- splenectomy for severe
-
Acquired stem cell disorder making RBC membrane prone to lysis by complement
PNH
-
PNH findings
- Episodic hemolytic anemia;
- Venous thrombosis;
- Deficient hematopoiesis -> pancytopenia;
- reddish-brown urine;
- Hemoglobinuria, esp. first morning urine
-
Episodic hemolytic anemia; Venous thrombosis; Deficient hematopoiesis -> pancytopenia ... indicate:
PNH
-
PNH labs
- Flow cyto = absence of CD59 Ab;
- normocytic;
- hemoglobinuria
-
In PNH, increased risk of:
leukemia/myelofibrosis
-
PNH tx
- Tx Fe def;
- prednisone for hemolysis;
- BM txp if severe
-
Episodic hemolytic anemia related to oxidative stress (hereditary)
G6PD def
-
G6PD def prevalence
- >200M worldwide (usu AA men);
- X linked recessive;
- females rare
-
Stress triggers of G6PD def
- Infxns;
- toxins/drugs (sulfa/antimalarial);
- fava beans
-
G6PD def findings
- No splenomegaly or chronic hemolytic anemia;
- bite cells/Heinz bodies;
- Reticulocytosis and inc bili in crisis;
-
G6PD def tx
- Splenectomy for severe; (txn rarely);
- avoid stressors (ASA,sulfa, antimal, fava)
-
Autosomal recessive disorder in which abnormal Hgb leads to chronic hemolysis
Sickle cell disorders
-
In sickle cell dz, rate of sickling depends on:
Conc of Hgb S, dehydration, presence of other Hgb (F), hypoxemia & acidosis
-
Sickle cell prevalence
- 8% of AA: Hgb S gene;
- 1/400 AA have SSA;
- onset in 1st yr (Hgb F falls);
- 40-50 yr life exp
-
S/S = Pallor, jaundice, splenomegaly, leg ulcers, pigment gallstones, priapism
Sickle cell
-
2 RBC conditions w/pigment gallstones
Hereditary spherocytosis, sickle cell
-
Sickle cell: vascular occlusion leading to infarction
- Pulmonary (acute chest syndrome);
- Retinal (blindness?);
- Renal (to renal failure );
- Stroke, even in kids;
- Splenic infarcts;
- aseptic necrosis of femoral head
-
Sickle cell labs
- v low hgb (7-10);
- sickled cells = 5-50% of RBCs;
- reticulocytosis; NRBCs;
- Leukocytosis, thrombocytosis, high indirect bili
-
Sickle cell tx
- Folic acid 1 mg po qd;
- hydrate, low alt, vax (flu/pneumo/mening)
-
SSA longterm issues
- Splenectomy: infxn probs;
- narco abuse;
- Hydroxurea to inc hgb F
-
Acquired disorder which IgG autoantibody formed that binds to RBC membrane
AIHA (autoimmune hemo anemia)
-
AIHA: ___% are idiopathic; seen in ___
50% ; lupus, NHL, CLL
-
AIHA findings
- Pos coombs test;
- severe anemia (6-10);
- high retic & ind bili;
- spherocytes & NRBC;
- Evans syndrome (immune thrombocytopenia)
-
AIHA tx
- Prednisone 1 mg/kg/d;
- splenectomy if fail;
- Rituximab, Danazol, IVIG if fail;
- avoid txn
-
Acquired hemolytic anemia due to IgM autoantibody
Cold agglutinin dz
-
Cold agglutinin dz causes
Idiopathic or neoplasm or post-infxn (Monoclonal gammopathy, mono, mycoplasma)
-
Cold agglutinin dz findings
- Mottled/numb fingers/toes;
- anemia is rarely severe;
- mild reticulocytosis;
- spherocytes;
- Pos Coombs for complement;
- Pos cold agglutinin test;
- Chilled blood will look clumped on slide
-
Cold agglutinin dz tx
- Symptomatic, avoid cold;
- poss Rituximab or immunosupp or plasmapheresis;
- no splenectomy/steroid
-
Defn neutropenia
PMN <1500 (AA may have 1200 normal)
-
Absolute Neutrophil count formula
WBC x (% segs + % bands) = ANC
-
Neutropenia findings
- Stomatitis;
- fever;
- poss septicemia, pneumonia and cellulitis
-
Neutropenia tx
- DC potl causative agents;
- tx infxns;
- poss GF (G-CSF) for severe
-
Anemia: no hepatosplenomegaly
aplastic anemia
-
Anemia: No neuro S/S
Folic acid def
-
Aplastic anemia S/S
No hepatosplenomegaly
-
Reticulocytosis
hemolytic anemias
-
Neg Coombs
hereditary spherocytosis
-
Pos Coombs
AIHA, cold agglutinin
-
Heinz bodies
Hemolytic anemias (G6PD)
-
Low retic
- hypoproliferative anemia;
- B12;
- PRCA;
- aplastic anemia
-
Evans syndrome
(immune thrombocytopenia) AIHA
-
Anagrelide may be used for:
P vera; thrombocytosis
-
Cytoreductive tx
- (eg, thrombocytosis);
- Anagrelide, hydroxyurea
-
Engorged retinal veins
P vera; Waldenström
-
Causes of vessel wall dz
- Scurvy (Vit C def);
- Amyloidosis;
- Hereditary-Hemorrhagic Telangiectasia (Osler-Weber-Rendu Dz);
- Neurofibromatosis;
- Collagen Dz (Marfan; Ehler-Danlos)
-
Causes of thrombocytopenia (decrease in plt numbers)
- Decreased prodn (BM prob);
- inc destn (meds, immune mediated, DIC);
- Sequestration (Splenomegaly)
-
Causes of decreased plt function
- Membrane Defects (Glanzmanns Thrombasthenia; Bernard-Soulier);
- Pathway Defects (Arachidonic Pathway Defect; Aspirin/Clopidogrel Use);
- Others (MDS)
-
Examples of plt dz
- Acute Thrombocytopenia;
- HIT;
- ITP;
- TTP;
- HUS
-
ITP dx is...
one of exclusion (i.e., notable for what is not present)
-
ITP findings
- Neg FH/SH/PMH;
- labs = acute thrombocytopenia;
- all else normal
-
ITP tx
- Immunosuppression (steroids, Rituximab, cyclophosphamide );
- Immune Modulation (IVIg, Splenectomy);
- Stim of Plt Prodn (Eltrombopag, Romiplostim)
-
2 types of HIT
- 1-transient decrease;
- 2-immune mediated (sig)
-
HIT mechanism
- Heparin combine w/PF4;
- this plus Abs -> plt activation -> limb or life threatening thrombosis
-
HIT PMH
- On heparin 4-10 days;
- Inflammation/necrosis?;
- limb asymmetry? ;
- Cool/pulseless extremities?
-
HIT labs
- Plt drop 4-10 d post heparin;
- 50% of plt baseline;
- coags normal;
- confirm w/Serotonin Release Assay
-
HIT tx
- Stop all heparin products (inc hep lines & flushes & LMWHs);
- prompt tx w/alt. anti-coagulation: Direct Thrombin Inhibitor (Argatroban, Lepirudin, Bivalirudin);
- Fondaparinux (synthetic anti-coagulant);
- warfarin after plt normal;
- w/alt anticoag;
- 6-12 wks
-
Dz = increase in ultra-high molecular weight multimers of von Willebrand Factor
TTP
-
TTP causes:
- Intra-vascular platelet aggregation;
- systemic manifestations (CNS, Renal, Cardiac, Hematologic)
-
H&P for TTP
- mental status changes;
- S/S rel to end-organ damage;
- other=sim to acute & idio thrombocytopenia
-
TTP labs
- Plt usu <20K;
- coags/labs normal;
- micro-angiopathic hemolytic anemia (MAHA)
-
micro-angiopathic hemolytic anemia (MAHA)
- TTP;
- anemia, hemolysis, schistocytes
-
TTP tx
- Plasma exchange (lg bore catheter):
- blood removed, plasma sep’ & discarded, RBCs returned to pt;
- fresh plasma given back to pt;
- Immune Suppression(?)
-
HUS: mental status changes?
No
-
HUS findings
- Thrombocytopenia;
- labs = TTP
-
HUS tx
- Supportive;
- plasma exchange?
-
Extrinsic & intrinsic coag pathways converge to form:
factor Xa
-
PT measures:
extrinsic (FVII) & common pathways (Factor 1,2,5,10)(exogenous TF is added to initiate clotting);
-
PT is sensitive to (1) & normal range is (2)
-
aPTT measures:
intrinsic (factors 12,11,9,8) & common pathways (1,2,5,10)
-
aPTT normal range
24.1-32.3 sec (uses neg charged particles to initiate)
-
Cause of prolonged PT:
- Def. in FVII and Common Pathway Factors (FX, FV, FII, Fibrinogen);
- Liver Dz;
- Warfarin tx;
- Vit K Def;
- Inhibitor to FVIIa (rare)
-
Very rare causes of prolonged PT
-
Common pathway defs will prolong:
PT & aPTT
-
All clotting factors (x FVIII) made in:
Liver
-
fx of liver dz on coag
- 1st: dec in FVII (short half-life) prolongs PT;
- then dec in other factors -> prolonged aPTT;
- dz causes splenomegaly -> thrombocytopenia
-
MOA: warfarin tx on high PT
Warfarin antagonizes the action of Vitamin K
-
Vitamin K is a necessary co-factor in the g-glutamyl carboxylation of:
Factors II, VII, IX, X; also Protein C and Protein S
-
MOA: vit K def on high PT
Sim. to warfarin
-
Situations in which vit K def is seen:
- HDN (tx w vit K);
- malabsorption (vit K, A,D,E fat soluble);
- malnutrition; antibx use
-
Causes of prolonged aPTT:
- Def of intrinsic (FXI, FVIII, FIX ) & common pathway factors;
- Heparin & DTI tx;
- Inhibitors to coag factors
-
Deficiencies in HMWK, PK, and FXII are assoc w/which bleeding problems?
Deficiencies in HMWK, PK, and FXII are NOT associated with any bleeding
-
Clotting factor def assoc w/Jewish ancestry
FXI def
-
FVIII def AKA = ? Prevalence = ?
- Hemophilia A;
- 1:5,000 live births;
- primarily in males
-
FIX Deficiency AKA = ? Prevalence = ?
- Hemophilia B;
- 1:30,000 live births;
- primarily in males
-
FVIII, FIX Deficiency: percentages assoc w/bleeding/severity
- <1% assoc w/ spontaneous bleeding;
- 1-5% moderate, can still have spont bleed;
- 5-40% can bleed w/procedures/trauma
-
Hx includes hemarthrosis, bleeding into joints, and/or x-linked FH of probs
FIXdef; FVIII def
-
FVIII/FIX def findings
Labs: aPTT prolonged; FVIII/FIX levels decreased
-
FVIII/FIX def tx
Specific Factor Replacements: FVIII or FIX Concentrate; plasma derived or recombinant
-
Prolonged aPTT; doesn't correct w/mixing study
FVIII inhibitor
-
FVIII Inhibitor
- Seen in PG & the elderly;
- Presents with provoked – spontaneous bleeding;
- Rare ( 1:1,000,000);
- Auto-Ab vs FVIII, prevents fn or increasing clearance
-
FVIII Inhibitor
- Seen in PG & the elderly;
- Presents with provoked – spontaneous bleeding;
- Rare ( 1:1,000,000);
- Auto-Ab vs FVIII, prevents fn or increasing clearance
-
Treatment to Eradicate FVIII Inhibitor:
- Steroids +/- Cyclophosphamide.
- Tx if Bleeding: If inhibitor is of low titer, can give FVIII;
- if titer is high, give FVIIa
-
von W Dz usu presents w/PT/aPTT = ?
Normal
-
Most common bleeding disorder, at a prevalence of ?
vW Dz (1%)
-
limited to mucocutaneous bleeding
vW Dz
-
Fns of vW factor
- Bridges plts;
- w/endothelium;
- Bridges plts together;
- Carrier for FVIII, extending its half-life
-
vW Dz lab data
- Low levels of vW antigen (VWF:Ag);
- Low levels of vW Activity (VWF:RCo);
- Multimers are decreased
-
vW Dz tx (for mild Forms):
- ddAVP (synthetic vasopressin);
- intranasal or IV; -> inc. release of pre-formed vWF (Only works for a day or two);
- e-aminocaproic acid (Works by inhibiting fibrinolysis)
-
vW Dz tx (for Severe Bleeding/Surgery):
- Replace with VWF:FVIII containing concentrates;
- Humate-P
-
Coagulation dz: causes elevated levels of prothrombin; leads to a modest increase in hypercoagulability, (2-fold)
Prothrombin 20210A Mutation
-
Second most common inherited cause of hyper-coaguability
Prothrombin 20210A Mutation
-
Prothrombin 20210A Mutation: concomitant risk factors
Smoking, BPCs/Hormone replacement
-
Fibrinolysis/Anti-coagulant Disorders usu present as:
thrombosis
-
Antithrombin activity is markedly stimulated by:
Heparin
-
Antithrombin def is manifested by:
Recurrent venous thromboses
-
Protein C or Protein S Def: Predisposition to:
recurrent venous thromboses
-
Uncommon causes of venous thromboses
- Antithrombin def;
- Protein C or Protein S Def
-
Activated Protein C Resistance AKA:
Factor V Leiden
-
Dz: mutation makes it resistant to inactivation by Activated Protein C
Factor V Leiden
-
Most common hereditary hyper-coagulable state; mainly ltd to ?
- Factor V Leiden;
- pts of Euro extraction
-
Factor V Leiden: Heterozygous state increases risk of thrombosis up to:
8-fold
-
Factor V Leiden: Homozygous state increases risk:
100-fold
-
Auto-antibody that interferes with the natural anti-coagulant system
Anti-Phospholipid Syndrome
-
Anti-Phospholipid Syndrome presents with:
- Recurrent arterial or venous thromboses;
- 2nd trimester miscarriages;
- Thrombocytopenia;
- Valvular heart dz
-
Recurrent arterial or venous thromboses; 2nd trimester miscarriages; Thrombocytopenia; Valvular heart dz; suggests ?
Anti-Phospholipid Syndrome
-
Anti-Phospholipid Syndrome: Lab Data:
- Presents w/prolonged aPTT (b/c in vitro fx of the Ab on aPTT);
- mixing study fails to normalize;
- Confirmatory tests required to make the diagnosis
-
Anti-Phospholipid Syndrome: tx
Once thrombotic event occurs, tx w/warfarin indefinitely
-
Condition in which circulating plasma (which contains the clotting factors), turns into serum
DIC
-
DIC: presentation
- Excessive Thrombosis;
- Organ Dysfunction (Renal; Hepatic; CNS);
- Bleeding, Shock, Death
-
-
Hx pos for Heparin, Tacrolimus, Ticlopidine may point to:
DIC
-
Signs of hemorrhage in DIC
- Mucous membranes;
- IV Sites, Catheters, ETT;
- Venipuncture sites
-
CBC for pt w/DIC
WBCs up or down; probably toxic granulations; anemia, thrombocytopenia; schistocytes
-
DIC labs:
- Coags: PT prolonged (first one to go “out” -- due to very short half-life of FVII);
- aPTT prolonged;
- factor levels decreased (II, V, VII, VIII, IX, X);
- Fibrinogen (AKA Factor I) decreased:
- AT decreased;
- D-Dimer elevated
-
-
DIC tx (if bleeding, or surg needed)
- Plts;
- blood;
- Fibrinogen, if <100 (Give cryo; theoretical concern over worsening thrombosis if given alone, since cryo lacks AT, Protein C, and Protein S)
-
Defn Hemorrhage:
failure to maintain hemostasis
-
Defn Thrombosis:
failure to maintain fluidity
-
Steps in forming the primary hemostatic plug:
- Plt Adhesion;
- plt Aggregation;
- plt surface activation & recruitment of other plts;
- plt Release
-
Platelet Release involves:
- Release of PF3 (Platelet factor 3);
- intracellular Ca (enhances further activation);
- thromboxane A2
-
thromboxane A2 is:
potent stimulator of plt aggregation & vasoconstriction
-
visible end product of coagulation =
Fibrin
-
fibrin is digested by
plasmin
-
-
Single best indication of functional platelet deficiency
Bleeding time
-
BT prolonged when:
- Plts <100,000;
- abnormal plt fn;
- drugs like Plavix
-
Adult ITP
- usu chronic (aot kids, no viral infxn);
- peak = 20-50 y.o.; F:M = 2:1
-
Most common drug causing ITP
Heparin
-
Dz’s causing ITP
SLE, CLL, virus (HIV/Hep C)
-
TTP findings
- High LDH;
- neuro & renal S/S;
- MAHA;
- schistocytes;
- AutoAb to ADAMTS13
-
Dx sim to TTP but w/o neuro S/S
HUS
-
AutoAb to ADAMTS13 seen in:
TTP
-
-
HUS tx & prognosis
- plasmapheresis FFP;
- kids self-limiting;
- 40% adults die;
- 80% get renal insuff (CRI)
-
Trousseau’s syndrome
Subacute DIC; seen in cancer pts
-
DIC labs
- low plt & fibrinogen;
- schistocytes;
- pos D-dimer (more spec than pos FSP);
- PTT prolonged more often than PT (both may be abn)
-
DIC tx
- tx underlying condition;
- replace blood products PRN (platelets, FFP, cryo, PRBCs, AT3);
- poss heparin or LMWH
-
most common congenital disorder of hemostasis
von Willebrand’s
-
von Willebrand’s FH
autosomal dominant
-
von W defect is in:
platelet adhesion only
-
vWF is synthesized in:
endothelial cells & megakaryocytes
-
Fn of vWF:
mediate platelet adhesion to damaged vessel site
-
vWF is carrier protein for:
- factor 8;
- vWF pts have decreased factor 8 levels & prolonged PTT
-
vWF labs
- BT > 8 min;
- low factor 8 level; high PTT;
- plt aggn abn w/ ristocetin;
- low vW Ag
-
vW dz Rx
- avoid aspirin products;
- may use DDAVP (also use pre-operatively)
-
Glanzmann’s
- rare autosomal rec;
- def in IIb/IIIa, plts can’t agg;
- high BT
-
Glanzmann’s tx
plt transfusion
-
Liver = site of prodn of all clotting factors except:
factor 8
-
Thrombopathies
- Von Will;
- Glanzmann’s thrombasthenia;
- Bernard-Soulier;
- Acquired
-
Tx for liver dz/thrombocytopenia
FFP
-
Bernard-Soulier Syndrome
- Rare autosomal rec;
- low/abn plt vWF receptor;
- giant plts, thrombocytopenia, prolonged BT
-
Platelet aggregation abnormal with ristocetin, which corrects with the addition of normal platelets, in:
Bernard-Soulier Syndrome
-
Causes of acquired thrombopathy
- Drugs (ASA, NSAIDS, cephalosporins);
- ETOH (>BT, >*PT, PTT also prolonged in end-stage liver dz);
- Renal dz (unknown mechanism);
- Dysproteinemias or MM
-
Defn Thrombopathy (Qualitative)
Bleeding disorders characterized by prolonged BT despite normal platelet count
-
Subacute DIC (Trousseau’s syndrome): will see:
- Recurrent superficial & DVTs;
- low plt & high D-dimer
-
___ pathway initiates coag process; then _____ pathway enhances _____ formation in clot
- Extrinsic;
- intrinsic;
- thrombin
-
First factors to be affected in hepatic dysfunction
Vit K dependent factors (2, 7, 9 & 10) + factor 5
-
natural anticoagulants
Proteins C & S
-
causes of vit K def
- biliary tract dz;
- drugs;
- malnutrition
-
Most common drug induced form of thrombocytopenia
HIT
-
HIT occurs when?
4-10 days post hep infusion
-
HIT involves:
IgG antibody to Platelet Factor 4
-
Confirm HIT with:
Serotonin Release Assay
-
Unlike PTT, PT tests for
factor 7
-
PT monitors:
- Coumadin;
- common pathway (1,2, 5, 10); F7
-
-
PTT monitors:
- Heparin;
- intrinsic (12, 11, 9, 8);
- common pathway (1,2, 5, 10)
-
Heparin tx PTT range
50-70 s
-
Fibrinogen unique to:
- plasma;
- ref range = 206-382
-
Factor Xa to monitor:
LMWH (eg, enox/Lovenox)
-
Hereditary hypercoag states
Factor V Leiden; Protein C & S def; AT III deficiency
-
Hemophilia A
- X linked rec;
- males 1:10K;
- hemarthroses;
- low FVIIIc;
- high PTT;
- tx = FVIII, DDAVP
-
Most common severe bleeding disorder
Hemophilia A
-
Hemophilia B
- Xmas dz;
- X linked rec;
- males;
- low FIX;
- high PTT;
- tx = FIX, NO DDAVP
-
Lupus Anticoagulant
- Circulating IgG or IgM;
- high PTT (no correction with mixing studies);
- risk of thrombosis or recurrent spontaneous abortion
-
Most frequent cause of hereditary thrombophilia
- Factor V Leiden (AKA APC);
- hereditary resistance to action of activated protein C (4-8% of pop)
-
Diff btw hep & LMWH
- Hep binds to anti-thrombin III (inactivate coag factors);
- LMWH binds to ATIII and directly inactivates Xa
-
D-Dimer
- Nonspecific;
- only neg test is helpful; PE;
- 90% pts w/thrombotic & thromboembolic dz;
- Neg <0.349;
- Low Pos = 0.350-0.500;
- Positive = >0.500
-
Protein C def pts
- warfarin hyper-sensitivity rxn;
- may have to decrease coumadin by half (lest get necrotizing condition)
-
Type I HIT:
- Non-Immune mediated;
- plt = 100,000, no thrombosis;
- D/C heparin, counts normalize
-
Type II HIT:
- Immune mediated;
- plt = 50,000, hi risk of thrombosis;
- D/C Heparin, Rx direct thrombin inhibitors, then Coumadin
-
ACT
- Activated clotting time;
- monitors heparin in OR (check if safe to pull cath/A lines);
- Normal blood clots in <100 seconds;
- Heparin therapeutic = 300-600 s
-
Distinguish liver dz coagulopathy from vit K def
- Vitamin K def only: 5 is normal, 7 is low;
- Liver dz only: both 5 & 7 are low
-
Deficiency allows unopposed conversion of fibrinogen to fibrin
ATIII def
-
Virchow's Triad
- Vascular damage;
- Hypercoagulability; Vascular Stasis;
- Predisposes patient to venous thrombosis
-
Pathophysiologic Basis for Myeloproliferative Disorders
- Acquired clonal abnormalities of the hematopoietic stem cell;
- May see changes in all stem cell lines (erythroid, myeloid, & pt cells);
- poss specific chromosomal changes
-
True increase in RBC mass
Primary P. vera
-
Relative increase in RBC mass
Secondary P. vera
-
Conditions causing secondary P. vera
Conditions such as hypoxia (COPD, heart disease, cigarette smoking), renal disease, MI’s, dehydration, high altitude, autotransfusion (blood doping
-
P. vera: incidence/prevalence
- 60 to 70 yrs (mean age at dx: 65 yrs; rare in pt <40);
- M/F = 1.2 to 1
-
P. vera S/S
Probs rel to hyperviscosity & hypervolemia; pruritus (esp. after hot showers/baths), thromboses; dyspnea; HA; visual disturbance; tinnitus
-
Hallmark of P. vera =
Erythrocytosis
-
P. vera H & H
- M: >18.5 ;
- F: >16.5 (often HCT is > 60%)
-
Condition w/thrombosis; splenomegaly; Plethora; systolic hypertension; engorged retinal veins
P. vera
-
P. vera lab data
Positive JAK-2 (janus kinase) serum test (pos in 74-97% of pts)
-
P. vera mgmt
- Tx phlebotomies (Hct <45 % M; Hct <43% F);
- myelosuppression if nec;
- hydroxyurea (watch WBC/PLT);
- Anagrelide if thrombocytosis;
- Aspirin 81mg to reduce thrombosis risk;
- antihistamine for pruritus
-
P. vera mgmt
- Tx phlebotomies (Hct <45 % M; Hct <43% F);
- myelosuppression if nec;
- hydroxyurea (watch WBC/PLT);
- Anagrelide if thrombocytosis;
- Aspirin 81mg to reduce thrombosis risk;
- antihistamine for pruritus
-
P. vera prognosis
- Median Survival Tx: 11-15 yr;
- untx’d = 18 mos;
- 5-20% evolve into myelofibrosis or acute leukemia over 20 yrs
-
Causes of Reactive (Secondary) Thrombocytosis
- Severe hemorrhage;
- splenectomy;
- neoplasms;
- chronic inflame dz;
- post acute infxn;
- B12 def;
- meds (vincristine, epi);
- ETOH
-
Causes of Reactive (Secondary) Thrombocytosis
- Severe hemorrhage;
- splenectomy;
- neoplasms;
- chronic inflame dz;
- post acute infxn;
- B12 def;
- meds (vincristine, epi);
- ETOH
-
Thrombocytosis S/S
- Median 50-60 yrs (but all ages);
- rare in kids;
- slight female predominance;
- 1/3 of pts asymptomatic at dx;
- 2/3 of pts vasomotor s/s (HA, dizziness, visual changes) or complications from thrombosis/bleeding
-
Thrombocytosis findings
- Splenomegaly (25+% );
- hepatomegaly (20 %);
- Leukocytosis, erythrocytosis, mild anemia;
- occ immature precursor cells and/or large plts;
- BM bx: inc no. of megakaryocytes, else normal
-
Thrombocytosis Mgmt
- ASA to prevent thrombosis;
- Cytoreductive tx (hydroxyurea, anagrelide);
- Plt pheresis if severe bleed;
- BM bx for Philadelphia chr.
-
Thrombocytosis Prognosis
- 10 y survival = 64-80% ;
- 1-5% evolve into AML, 10-15% evolve into myelofibrosis
-
Disorder in which bone marrow is replaced with scar tissue, leading to anemia
Myelofibrosis
-
Myelofibrosis findings
- Fibrosis on BM;
- splenomegaly;
- giant plts;
- teardrop poikilocytosis
-
Myelofibrosis peak incidence & survival
- 50-70 yrs old;
- median survival is 2-5 yr from onset;
- occurs in 10 to 30% of pts w/P. vera
-
Cause of Myelofibrosis
Unknown
-
JAK-2 mutations may be associated with:
- Myelofibrosis, thrombocytosis;
- P vera = often pos JAK-2 serum test
-
Increased bone marrow production of megakaryocytes leads to increased peripheral platelet count
Myelofibrosis
-
Myelofibrosis S/S
Early: asymptomatic; later: malaise; wt loss; splenomegaly/splenic infarction; hepatomegaly in 50% of pts
-
Myelofibrosis findings
- BM aspirate = dry tap;
- anemia generally increases over time;
- normochromic-normocytic & mild poik;
- NRBCs
-
Myelofibrosis mgmt
- No tx to reverse/ctrl underlying pathology;
- tx supportive;
- mgmt of complications; (Procrit, Aranesp);
- pRBC & plt txn;
- Thalidomide & Revlimid? ;
- allogeneic BM txplt for younger pt? ;
- Median survival 5 yrs
-
Acquired clonal disorders of the hematopoietic stem cell
MDS
-
______ cytopenias affect one or more cell lines (RBC, WBC, and/or PLTs)
MDS
-
Dz occurs when blood cells do not develop into mature cells, but rather stay in an immature stage within the BM
MDS
-
Some chromosomal abnormalities (5q – loss of part of the long arm of chromosome 5); “pre-leukemia”
MDS
-
MDS: risk factors include exposure to:
Benzene, radiation, chemotx agents (esp alkylating agents & anthracyclines)
-
MDS pts
- Average age ≥ 60 years;
- pts often asymptomatic;
- If S/S: fatigue, bleeding, recurrent infxn, fever, splenomegaly, pallor
-
MDS Labs
85% of pts anemic; 50% neutropenia; 30% thrombocytopenia
-
MDS CBC
- Normal or low RBC, WBC, PLTS;
- Blasts in BM <20%;
- Pelger-Huet cells (bi-lobed neutrophils)
-
MDS: >20% blasts in BM indicates:
Transition into acute leukemia
-
Blasts in BM <20%; Pelger-Huet cells (bi-lobed neutrophils) seen in:
MDS
-
MDS BM shows:
Hypercellular marrow with delayed/abnormal maturation ( 5q- chromosomal abnormality, ring sideroblasts)
-
MDS Mgmt
- Monitor closely (lest transformation);
- Cytokine and transfusion support;
- chemotherapy (Thalidomide, Lenolidimide for 5q- syndrome, Azacitadine);
- Allogeneic BM txplt only curative therapy (most pts too old)
-
MDS: Allogeneic BM txplt may cure ?? % of pts
30-50%, for pts <60 y.o.
-
Cornerstone for tx of MDS
Supportive care
-
MDS prognosis
- Ultimately fatal disease;
- Infections or bleeding common causes of death
-
Risk of transformation to leukemia depends on:
Percentage of blasts in BM
-
Etiology of multiple myeloma; assoc with:
- Etiology unknown;
- assoc w/pesticides, paper production, leather tanning, exposure to radiation from nukes
-
Replacement of normal bone marrow by plasma cells leads to bone marrow failure
Multiple myeloma
-
Lytic lesions predisposing patients to bone pain, pathologic fractures, and hypercalcemia
Multiple myeloma
-
Multiple myeloma S/S
- Fatigue/Anemia;
- Bone pain (from lytic lesions: back and ribs);
- Recurrent infxn;
- Sp cord compression;
- Unexplained fractures;
- Kidney failure;
- Hyperviscosity syndrome
-
Multiple myeloma findings
- Anemia;
- Rouleaux;
- M-spike on SPEP;
- Bence-Jones proteins in Urine;
- Hypercalcemia from bony dz;
- Renal failure from light chain excretion
-
Multiple myeloma classic triad:
- Plasmacytosis (BM bx w/plasma cells > 5%);
- Bone lytic lesions (on bone survey );
- M-protein in serum and/or urine
-
Important to differentiate btw multiple myeloma and:
MGUS (monoclonal gammopathy of unknown significance)
-
Multiple myeloma evaluation
- SPEP (M-spike);
- 24 hr urine (Bence-Jones pro);
- Serum viscosity (may req plasma pheresis);
- Metastatic bone survey (lytic lesions);
- BM bx (inc. cytogenetics for q13- chromosome abnormality);
- Beta-2 microglobulins
-
Part of eval for multiple myeloma (if elevated = very poor outcome)
Beta-2 microglobulins
-
Thalidomide may be part of tx for:
Myelofibrosis, MDS, multiple myeloma
-
Multiple myeloma mgmt
- Chemo;
- Local radiation (pain ctrl);
- Autologous BM txplt for LT survival (mortality rate of 40-50%); hypercalcemia tx (bisphosphonates)
-
Multiple myeloma Prognosis:
- Median survival w/ transplant = 7 yrs;
- Median survival with chemo: 3 yrs
-
MGUS prevalence
- Present in 1% all adults, 3% over 70yr;
- Progresses to multiple myeloma 25% of cases
-
What MGUS looks like
Usually, pts have monoclonal IgG spike <2.5g/dL, M-spike remains stable
-
Malignancy of B lymphocytes
Waldenström’s Macroglobulinemia
-
Waldenström’s Macroglobulinemia causes overproduction of:
Monoclonal macroglobulin (IgM antibody)
-
Median age of onset is 64 yrs
Waldenström’s
-
Waldenström’s S/S
- Present w/fatigue;
- Hyperviscosity syndrome (nausea, vertigo, visual disturbances, mucosal or GI bleeding);
- wt loss, HA, cold hypersensitivity, peripheral neuropathy, hepatomegaly, splenomegaly, engorged retinal veins
-
Fatigue, cold hypersensitivity, peripheral neuropathy, engorged retinal veins may indicate:
Waldenström’s Macroglobulinemia
-
Hallmark of Waldenstrom:
Monoclonal IgM spike in SPEP
-
Waldenström’s Macroglobulinemia Findings
- Anemia ;
- Plasmacytic lymphocytes on BM bx;
- Serum viscosity 1.4 to 1.8 x that of water;
- Bone radiographs normal
-
Waldenström’s is differentiated from MGUS by:
Presence of bone marrow infiltration
-
Waldenström’s Macroglobulinemia mgmt
- If asymptomatic, follow expectantly;
- Plasmapheresis for hyperviscosity syndrome;
- Fludarabine & Rituximab preferred to alkylating agent tx;
- BM txpt? ;
- Median survival 3-5 yrs
-
Most commonly occurring leukemia
CLL
-
CLL Mgmt
- Observation; chemo;
- BMT;
- Tumor lysis prophylaxis (allopurinol, 300 mg/day, hydration, diuretics);
- Radiation (ctrl bulky adenopathy);
- Surgery (for diagnostic)
-
CLL prevalence
Mainly disease of older people (>90% of cases >50yr); M:F = 2:1
-
Characterized by clonal proliferation and accumulation of mature-appearing B lymphocytes (95 % of cases) in blood and lymphoid tissue; clonal malignancy of B lymphs
CLL
-
CLL S/S
- 25 % asymptomatic at dx;
- fatigue;
- drenching night sweats;
- lymphadenopathy (80%);
- wt loss;
- frequent/persistent infxn;
- skin infxn/shingles
-
CLL findings
- Anemia & thrombocytopenia;
- mature small lymphs & smudge cells;
- Hepatomegaly;
- Splenomegaly
-
RAI Staging System used for:
CLL
-
CLL growth
Tends to be slow growing and indolent
-
Lymphocytosis, WBCs >20,000/µL = hallmark of:
CLL
-
RAI Stage 0
- Inc WBC (leukocytosis blood & marrow);
- >150 mos survival
-
RAI Stage 1
- Inc WBC & lymphadenopathy;
- >101 mos survival
-
RAI Stage 2
- Inc WBC & Hepato/splenomegaly;
- >71 mos survival
-
RAI Stage 3
- Inc WBC & Anemia (Hgb < 11g/dl);
- >19 mos survival
-
RAI Stage 4
- Inc WBC & Thrombocytopenia;
- >19 mos survival
-
Blast crisis
When blasts comprise >30% of BM cells
-
CML will likely transform to:
Acute disease
-
Primarily disease of children
ALL
-
?? % of ALL pts are children (usually 3 -7 yo)
80%
-
Accounts for 10-20% of acute adult leukemia
ALL
-
CML mgmt
- Allo BMT;
- chemo (Gleevec; Dasatinib, AMN107; Interferon)
-
3 phases of CML (defined by # blasts in marrow)
Chronic, accelerated, and acute
-
Slowly progressing dz: too many WBCs made in BM (esp myeloid cells)
CML
-
CML prevalence
- Usually in young to middle age adults (medium age: 42);
- CML accounts for 7-20% cases of leukemia
-
Philadelphia chromosome present in ??% of CML cases
>95% of cases (t9:22 translocation of DNA)
-
_____ can trigger Philadelphia chromosome
Exposure to radiation
-
CML S/S
- Fever (w/o infxn); bone pain;
- LUQ pain (enlarged spleen);
- night sweats;
- bleeding & bruising;
- petechiae;
- fatigue ;
- weakness
-
CML findings
- Median WBC = 170,000 at dx;
- splenomegaly;
- BM/PBS: Phil. Chr (bcr/abl fusion gene);
- FISH for bcr/abl (quantitative);
- RT-PCR for bcr/abl (qualitative);
- thrombocytopenia (30%)
-
CML tx goal:
- Complete hemo & cytogenetic response;
- Five yr survival = 52-63% ;
- Median survival =6 yrs
-
Type of leukemia = immature, abnormal cells in BM (>20%) and blood (>10%) & in liver, spleen, lymph nodes
Acute Leukemia
-
ALL prognosis
- 80% of children will be cured with chemo;
- 20-40% of adults will be cured
-
ALL & AML S/S
- The usual S/S plus meningitis;
- Fever (abrupt onset with children);
- petechiae;
- anorexia
-
ALL & AML labs
- Pancytopenia;
- hyperleukocytosis;
- BM >20% blasts
-
AML: median age at onset:
65 yr
-
AML: 5 year survival:
10-30%
-
Hyperleukocytosis
Circulating blasts in peripheral blood (> 200,000/ mcl)
-
ALL mgmt
- Aggressive combo chemo [approx 2 yrs total (Cytoxan, daunorubicin, vincristine, prednisone)];
- CNS prophylaxis (intrathecal chemo);
- BMT??
-
Chemo phases for ALL
- Induction phase (4-6 wks);
- Consolidation phase (several mos);
- Maintenance phase (2-3 yrs)
-
AML Etiology
Poss: exposure to toxins (benzenes, radiation, chemotherapy)
-
AML findings
- Pancytopenia (& circulating blasts) (poss leukocytosis > 200,000);
- BM >20% blasts;
- Auer Rods;
- high ESR;
- hepatosplenomegaly
-
AML mgmt
- Chemo;
- Induction & 3 consolidation treatments, in hospital;
- Chemo = ARA-C with mitoxantrone, idarubicin, or daunorubicin;
- BMT;
- Tumor lysis prophylaxis (allopurinol, 300 mg/day, hydration, diuretics)
-
Hairy Cell leukemia prevalence
- Median age of onset = mid 50s;
- M:F = 5:1;
- usually indolent, very responsive to tx
-
Hairy Cell leukemia presentation
- Fatigue, abd discomfort (markedly enlarged spleen);
- persistent infxn;
-
Hairy Cell leukemia tx
- 2-CDA (2-chlorodeoxyadenosine), oral for 5-7 days (watch for drop in CBC counts);
- 90% of pts complete remission
-
Dz’s tx’d w/tumor lysis
AML &CLL & NHL
-
Hallmark of Hairy Cell leukemia
- Pancytopenia;
- “hairy” cells
-
Hodgkin Dz
- Nodular Sclerosing (80%);
- LPHD;
- Classical Hodgkin Dz;
- Mixed cellularity
-
Non-Hodgkin Dz
- Follicular;
- Burkitt;
- Diffuse lg B-cell;
- Marginal zone;
- Cutaneous T-cell;
- Anaplastic large cell
-
Group of cancers w/enlarged lymphoid tissue, spleen, liver, & Reed-Sternberg cells
Hodgkin Dz
-
Hodgkin Dz prevalence
- 7,900 new cases annually,
- two peaks for age of onset: age 20-40 then after 50;
- rare in kids <5;
- more common in men 15-45
-
_____ found in 40 – 50% of Hodgkin dz cases
EBV
-
Reed-Sternberg cells
Hodgkin Dz
-
Hodgkin Dz mechm of spread in pt
Usually arises in a single area and spreads to contiguous nodes (“next-door dz”)
-
Hodgkin Dz S/S
- Painless cervical , supraclavicular, & mediastinal lymphadenopathy;
- constitutional B symptoms (fever, drenching night sweats, wt loss);
- SOB common with mediastinal mass
-
Hodgkin Dz findings
- Nodular sclerosis (esp young pt);
- Mixed cellularity (esp in older pts);
- prob infxs etiology in young pts (mononuc, x3 risk);
- 5-10% = extranodal presentation (lung, liver, bone marrow);
- Chest Xray: often mediastinal mass
-
Hodgkin Dz diagnostics
- CT chest, abdomen, pelvis;
- PET scan;
- BM bx
-
Hodgkin Dz Stage I:
one lymph node region
-
Hodgkin Dz Stage II:
two lymph node areas but only one side of the diaphragm
-
Hodgkin Dz Stage III:
nodal disease, both above and below the diaphragm
-
Hodgkin Dz Stage IV:
extranodal disease
-
Hodgkin Dz mgmt: Stage I and IIa:
local disease, radiation alone
-
Hodgkin Dz mgmt: Stage IIb:
Controversial, radiation +/- chemotherapy
-
Hodgkin Dz mgmt: Stage III:
nodal disease, both above and below the diaphragm, chemo +/-radiation (ABVD)
-
Hodgkin Dz mgmt: Stage IV:
Extranodal disease, chemotherapy
-
Hodgkin Dz: Five year survival rate:
> 80% (Will usually recur in 2 yrs if at all)
-
Hodgkin Dz: if relapse:
Consider high dose chemo followed by BMT
-
Hodgkin Dz mgmt
- Chemo: ABVD; give chemo q 2 weeks x 4-6 cycles;
- Re-scan after 2-3 cycles to detn response;
- Radiation follows chemotherapy;
- Watch for toxicity/neutropenia (use CSFs); sperm banking?
-
5th most common malignancy in US
NHL
-
NHL prevalence
- Approx. 50,000 new cases annually;
- incidence higher in pts w/immunodeficiencies, h/o EBV, exposures to pesticides/solvents
-
Dz: arise from cells in Lymphoid tissue (90% of cases are derived from B-lympocytes)
NHL
-
3 Grades of NHL
- Indolent (low grade, slow growing);
- Intermediate (aggressive, mix of small to large cells);
- High Grade (very aggressive)
-
NHL S/S
- Lymphadenopathy: persistent, painless, isolated or diffuse (retroperitoneum, mesentery, pelvis, extranodal – skin, GI tract);
- B symptoms: fever, night sweats, weight loss, (intermediate and high-grade dz);
- Abd pain, vomiting, bleeding, edema
-
NHL findings
- Normal CBC but poss anemia, thrombocytopenia, & leukopenia; occ lymphoma cells on diff;
- bulky lymphadenopathy (poss cause jaundice, hydronephrosis, SVC syndrome, bowel obstruction, wasting)
-
NHL staging
- CT chest, abdomen, pelvis;
- PET scan??;
- Unilateral or bilateral BM bx;
- LDH (tumor marker);
- LP if CNS dz is suspected
-
NHL mgmt
- Range of options from watch-and-wait to intensive chemo, with/without radiation;
- Tumor lysis prophylaxis (allopurinol, 300 mg/day, hydration, diuretics);
- BMT
-
NHL tx depends on:
specific type and grade of NHL
-
Role of surgery in NHL
Diagnostic
-
Mgmt of Low Grade NHL
- Watch & wait (“dynamic observation”) average of 6 yrs after dx;
- Rituximab (monoclonal antibody targets B-cells SAg CD20 cells), 1x/wk for 4 weeks;
- R-CHOP (rituximab plus cytoxan, adriamycin, vincristine, prednisone);
- CHOP
-
Mgmt of Intermediate Grade NHL
- Rituxan-CHOP;
- R-ICE; B
- exxar (radiolabeled I-131);
- Zevalin[ radioimmunotherapy for NHL (radio-labelled Rituxan)]
-
Mgmt of High Grade Lymphoma ((Large B-Cell Lymphoma)
- R-CHOP;
- R-ICE;
- many lymphomas tx’d w/specific tx’s (Burkett lymphoma, post transplant lymphoproliferative disorder);
- Lymphoblastic lymphomas are treated with regimens similar for T-cell ALL
-
Lymphoblastic lymphomas are treated with:
Regimens similar for T-cell ALL
-
Oncologic emergencies
- Febrile Neutropenia;
- SVC Syndrome (superior vena cava syndrome);
- Tumor Lysis Syndrome; Hypercalcemia;
- Cord compression (myelomas)
-
Can affect T or B lymphocytes
ALL
-
Type of HL that accounts for 80% of HL cases
Nodular sclerosing HL
-
Bulky lymphadenopathy seen in:
CLL; NHL
-
Only curative tx for MDS
Allogeneic BMT
-
-
Serum viscosity 1.4-1.8 xH2O visc
Waldenström’s
-
-
Pancytopenia
ALL, AML, hairy cell
-
Giant plts & teardrop poik
Myelofibrosis
-
Drenching night sweats
CLL, Hodgkin’s
-
B-symptoms
fever, wt loss, drenching night sweats (HL, NHL)
-
Lymphadenopathy (in 80%)
CLL
-
-
-
Lytic lesions
multi myeloma
-
-
Serum viscosity 1.4-1.8 xH2O visc
Waldenström’s
-
-
Pancytopenia
ALL, AML, hairy cell
-
Giant plts & teardrop poik
Myelofibrosis
-
Drenching night sweats
CLL, Hodgkin’s
-
B-symptoms
fever, wt loss, drenching night sweats (HL, NHL)
-
Lymphadenopathy (in 80%)
CLL
-
-
-
-
-
Dohle bodies
- blue patch near edge;
- PMN;
- infxn
-
Toxic gran
- purple/blue-black; PMN;
- severe infxn/toxic
-
Hyperseg
- 6or more/3% w/5 or more;
- PMN;
- megaloblastic anemia, B12-folate def
-
-
-
LAP
- leukocyte alkaline phosphatase;
- Low in CML;
- High in leukemoid reactions
-
-
-
Hypercellular bone marrow with reticulin or collagen fibrosis
myelofibrosis
-
-
Immunoproliferative dz
- Waldenström’s;
- Multiple Myeloma;
- MGUS
-
Plts in leukemias
- Increased (acute);
- normal (chronic)
-
Immunologic phenotypes = Common; Early B lineage; T cell
ALL
-
-
Coexpression of CD19, CD5
CLL
-
Hypogammaglobulinemia
CLL
-
Anemia seen in leukemias
MM, hairy cell (NOT seen in CML)
-
Isolated lymphocytosis
CLL
-
Lymphocyte pleomorphism; heterophile Ab
EBV
-
Clustered bacteria in vacuoles in WBCs; low plts; leukopenia w/left shift; Rising Ab immunofluorescence titer
Ehrlichiosis
-
Histoplasmosis CBC
- Organism in neutrophils & monocytes on Wright-Giemsa PBS;
- in macrophages on bone marrow smear
-
Engorged retinal veins
P vera; Waldenström
-
Normocytic
anemia w/ normal sized RBC
-
Normochromic
hemoglobin # normal
-
RDW
- Red cell distribution width;
- blood test measuring RBC size
-
Anisocytosis
anemia w/ various-sized RBC
-
Poikilocytosis
anemia w/ various-shaped
-
Hematopoiesis
formation of blood or blood cells
-
Erythropoiesis
production of RBC
-
Granulopoiesis
production of granulocyte
-
Erythropoietin
glycoprotein hormone by kidney stimulating BM for RBC production
-
Blood Indices
MCV. MCH. MCHC
-
MCV
mean corpuscular volume (size)
-
MCH
mean corpuscular hemoglobin, hbg/RBC
-
MCHC
mean corpuscular hbg concentration; hgb/hct
-
Blood
- 5 liter in adult human,
- 6 - 8% total body wt.,
- should only exist in circulatory system
-
Capillaries
microscopic tubules, not in cornea and cartilage
|
|