-
Ultrasound:
Def: sound waves having a frequency >20,000 Hz
2 types: TransVaginal ultrasound & TransAbdominal ultrasound
-
TransVaginal Ultrasound (TVS)
- Used primarily in 1st trimester
- -Evaluates pelvic anatomy
- -Assess developing embryo/fetus for # and size
- -Locate the placenta
- -Screen for fetal & placental anomalies
- -Establish gestational age
- *Do not need a full bladder*Place in lithotomy pos. (stirrups)
- *Latex covering
-
TransAbdominal Ultrasound
- Fetal viability
- Number, position, gestational age
- Fetal growth patter
- Anomaly scan
- Amniotic fluid volume
- Placental location and maturity
- Assessment of fetal well-being
- *Gender is not 100%
- *Full bladder can give a better pic
-
Chorionic Villi Sampling (CVS)
- Definition: Biopsy of fetal portion of placenta for fetal genetic studies
- Indications: Age >35, frequent SAB, chromosomal anomalies/defects
- Advantages: Done at 10-12 weeks, results in 2 weeks
-
CVS Complications:
- Vaginal spotting/bleeding
- Spontaneous abortion
- Rupture of membranes
- Infection/chorioamnionitis
- Possible limb anomalies (missing!)
*Pelvic rest afterwards (no SEX)
-
Maternal serum Alpha Fetoprotein (MSAFP) and Quad Screen:
- Definition: measures MSAFP, HCG, estradiol, diameric Inhibin-A
- Findings:
- -Increased levels of MSAFP: neural tube defects, multiples, dates wrong
- -Decreased levels of MSAFP and Increased HcG: Downs syndrome (Trisomy 21)
- -Decreased MSAFP, estriol, & HcG: Trisomy 18
*Not very accurate/specific, done around weeks 16-18
-
Amniocentesis: when it's done/results
- Done at 15-20 weeks
- Results in 2 weeks
- Prenatal diagnosis
-
Indications for Amniocentesis:
- Maternal age >35
- Parent or previous child with chromosomal abnormalities
- Family history of NTD's (Neural tube defects)
- Fetal abnormalities per Ultrasound
- Women with Xlinked chromosomal disorder
- Fetal hemolytic disease
- Fetal LUNG maturity
- Evaluate alpha fetoprotein
*Might do before c-section to evaluate lungs of fetus
-
Complications of Amniocentesis:
- OCCURS IN <1%Pregnancy loss=0.5%
- Maternal hemorrhage
- Infection
- Preterm labor
- Placental abruption
- Damage to intestine or bladder
- Amniotic fluid leakage or embolism
- Risk to fetus: death, hemorrhage, infection, direct injury
*If RH-, needs Rogam for this procedure
-
Amniocentesis Results:
- Lecithin to sphingomyelin (L/S) ratio
- Phosphatidylglycerol (PG) level [Both done for lung maturity]
- Shake test
- Karyotype
- RH isoimmunization status
- Alpha fetoprotein levels
- Creatinine levels
*Position in left lateral tilt to prevent fainting
-
Biophysical profile
- Definition: non-invasive dynamic assessment of a fetus that is based on acute and chronic markers of fetal disease.
- Assess:
- Fetal tone, fetal movements, fetal breathing movements, amniotic fluid volume (AFI=amniotic fluid index), Non stress test (NST)-
- Scoring: 8-10-low risk for perinatal asphyxia, 4-6: possibly abnormal-repeat within 24 hrs, <6 & low amniotic fluid=delivery indicated and high risk for perinatal asphyxia.
*Accurate indicator of impending fetal death!!!!!!!
-
Non Stress Test (NST):
- Advantages: non invasive, relatively inexpensive, no side effects, immediate results, a GOOD indicator of fetal well-being, Can be done regularly
- Disadvantages: High # of false-positive results (fetal sleep, medications, fetal immaturity); NOT a good predictor of poor fetal outcomes
- Indications: PIH (pregnancy induced hypertension), diabetes, placenta previa/abruption, postmaturity, decreased fetal activity.
-
Results of Non Stress Test:
Reactive NST: 2 or more FHR accelerations of 15bpm lasting at least 15 seconds over a 20 minute period
Non reassuring (non reactive) NST: If these criteria are not met within 40 minutes
-
Contraction stress test (CST)
- Indications: Fetus at risk-IUGR, postdates, DM, non reactive NST, BPP <6
- Contraindications: 3rd trimester bleeding, risk of PTL(preterm labor), PROM, multiple pregnancy, placenta previa, incompetent cervix
- Test procedure: could induce labor!
-
Contraction stress test findings:
Reassuring (NEGATIVE): no late decelerations occur with 3 contractions in 10 minutes
Non reassuring (POSITIVE): late decels with at least 2 of the 3 contractions
Suspicious (EQUIVOCAL): late decels with 1 of 3 contractions OR there are contractions q2 minutes in 10 min.
-
Contraction stress test COMPLICATIONS:
- Fetal distress
- INDUCED LABOR
- hyperstimulation of uterus
-
Fetal Kick Counts:
- Used in all high risk pregnancies >28 weeks. Measured by date, hour of day and # of movements
- <10 movements in 2 hours or any change=emergency...CALL 911
-
External Cephalic Version (ECV)
- Turning the baby from a breech position to "head down" position.
- Can cause fetal distress
- Do ultrasound, IV-medications (Trabutaline-relaxes uterus but INCREASES HR-jitttteryyyy)
-
Contraindications to external cephalic version (ECV)
- Maternal problems: uterine anomalies, PIH or 3rd trimester bleeding
- Pregnancy problems: ROM, oligohydramnios, polyhydramnios or placenta previa
- Previous c-section or other uterine surgery
- Multiples
- Non reassuring FHR
- Fetal abnormalities (IUGR, nuchal cord)
*Can hear the FHR right about the umbilicus when baby is breech
-
Pregnancy risk factors (3 main ones):
- 1. Age: <16 or >35
- 2. Parity: >8 years since last pregnancy, <3 months since last birth, >5 previous births
- 3. Poor OB history: 2 or more previous preterm infants, 2 or more consecutive miscarriages, 1 or more stillbirths, 1 or more infants with gross anomalies, birth defects, history of dystocia (difficult labor), poor self care practices
-
Pregestational-Cardiac Disease
- Definition: impaired cardiac function
- Pregnancy outcome: depends on degree of cardiac compromise
- Greatest risk: cardiac output increases 30-50% by midpregnancy 28-32 weeks
-
Classes of cardiac disease:
- Class I: uncompromised
- Class II: slightly compromised
- Class III: Markedly compromised
- Class IV: inability to perform any physical activity without discomfort
- *Class III and IV=almost complete bed rest!!!
-
Complications of cardiac disease on pregnancy:
- Congestive Heart Failure: most common complication of HD during pregnancy
- Bacterial Endocarditis-infections!
- Decreased Placental Function: IUGR, fetal distress, preterm delivery
-
Management of cardiac disease:
Close medical supervision: rest-avoid exertion, limited sodium intake, prophylactic antibiotics (PCN)-for any invasive procedures including birth!
Medications: Digitalis (Increases contractility of heart, don't give when HR is <60), Heparin (if anticoagulant indicated-doesn't cross placenta), furosemide (lasix)
-
Signs of cardiac decompensation
- Dyspnea on exertion or at rest
- Increasing fatigue
- Tachycardia or irregular pulse
- Diastolic murmur at heart apex
- Moist cough with/without hemoptysis
- Palpitations
- edema(pedal, pitting, generalized, & pulmonary)
- Nail bed and circumoral cyanosis
- rales at lung bases
-
Diabetes Mellitus in pregnancy
- Definition: relative or complete lack of insulin secretion AND/OR increased resistance to insulin
- Early pregnancy: anabolic state-glucose use & glycogen storage increase by mother and fetus
- 2nd half of pregnancy: increased insulin resisitance d/t increased human placental lactogen (HPL) which increases circulating glucose for fetal use & increases demand on maternal pancreas to produce more insulin.
- Fetus produces own insulin but obtains glucose from mother across placenta; the amount of glucose in maternal circulation stimulates the fetal pancreas to produce more insulin
-
Functional classification of DM in pregnancy
- Gestational diabetes
- Preconceptional diabetes:
- *without complications: Type 1: insulin dependent; Type 2: non insulin dependent
- *With complications: advanced retinopathy, nephropathy, autonomic neuropathy, coronary artery disease
- *Significant problems for placenta bloodflow*
-
Gestational diabetes:
- Definition:
- *any degree of glucose intolerance that has its onset or its first diagnosis in pregnancy
-
Diabetes in pregnancy: by trimesters
1st trimester: Decrease insulin needs, hyperglycemic=teratogenic
2nd/3rd trimesters: Increase insulin needs
After delivery: Decreased insulin needs
-
Risk factors for DM:
- Family history of DM
- HIstory of previous stillbirth or SAB'sPrevious baby with congenital anomalies
- Previous baby >9lbs
- Maternal obesity
- recurrent yeast infections
- recurrent glycosuria
- Multiparity, hydramnios (too much fluid), and HTN
-
Diagnostic tests for DM:
- Fasting blood glucose at 28 weeks gestation
- Results at 1 hour
- -normal=<130 mg/dl
- -If >130, do 3 hr 100g GTT fasting
- Diagnose Gestational DM if 2 or more elevated levels
-
Effects of DM on pregnancy and fetus
- Effects are r/t the degree of control of blood glucose levels b/t 70-120 mg/dl & degree of vascular involvement
- Long term glucose control: glycosylated hemoglobin (HbA1C)-measures % of Hbg with glucose bound to it, levels depend on amount of glucose available during the red blood cell's 120 day lifespan
*In labor, try to keep blood sugar <100
-
Complications of DM in pregnancy: (more common with type 1 DM)
- 1. Maternal hydramnios (Increase in amniotic fluid)
- 2. Pregnancy induced hypertenstion (PIH)
- 3. infection
- 4. Maternal Hypoglycemia
- 5. Spontaneous abortion
- 6. Preterm labor
- 7. Intrauterine growth restriction (IUGR)= decreases blood supply which increases risk for stillbirth
- 8. Worsening retinopathy
*increase in fetal urine output=increase volume of amniotic fluid in mothers!!!! NOT GOOD
-
Fetal/newborn complications/effects of DM
- Increase incidence of stillbirth (usually after 36 weeks)
- fetal congenital anomalies (cardiac, CNS)
- Macrosomia (large body)
- hypoglycemia
- hyperbilirubinemia
- Delayed fetal lung maturity=RDS (Respiratory distress syndrome)-bc of increase fetal insulin
- Fetal asphyxia and death
-
Teaching/management of DM in pregnancy
- Understanding of disease process (s/s of hypoglycemia, ketoacidosis)
- Diet/exercise
- Medications-insulin use
- Home monitor glucose levels/urine for ketones
- Clinic appts q1-2 weeks
- Fetal testing
-
Fetal testing in diabetic pregnancy
- Maternal serum alpha fetoprotein @ 16-18 weeks
- Ultrasound (anomalies, amniotic fluid volume, size)
- Non stress test-NST-weekly from 28-32 weeks
- Fetal Kick counts
- Biophysical profile (BPP)
- Amniocentesis for lung maturity
- Induction of labor
-
Teaching for pregnant diabetics:
- risks to self and newborn: Increase c-section, longer hospitalization, NICU for infant, risk of stillbirth
- Postnatal DM: 35-50% of women with gestational DM develop DM within 15 yrs
- Should be tested at 6 weekds pp with GTT
-
Factor V Leiden Mutation
- Autosomal dominant blood disorder: more common in women of European descent
- Causes activated protein C resistance resulting in venous thromboembolic events (VTE)!!
- Pregnancy-associated with 5-6x increased risk of VTE
- Heterozygous (1 copy)=5-10x increased risk for VTE
- Homozygous (have 50-100x risk)
- complications: HTN, placental abruption, SAB, intrauterine fetal demise, IUGR
- Prophylaxis: heparin therapy
-
Spontaneous Abortion (SAB): definition and causes
- def: premature expulsion of fetus <20 weeks or <500 grams
- Increased risks: >35 years old, systemic diseases, hx of >3 SAB's, tobacco and alcohol use
- CAUSES:
- -Fetal factors: defective embryological development, faulty ovum implantation
- -Placental factors: premature seperation of normally implanted placenta, abnormal implantation, abnormal platelet function
- -Maternal factors: infection, sever malnutrition, reproductive system abnormalities, endocrine problems, trauma, drug ingestion
-
Spontaneous abortion: signs and symptoms
- Vaginal bleeding/spotting in 1st 20 weeks
- May be lower abdominal cramping/dull backaches
- ROM: tissue or clot-like material from vagina
- May have thinning cervix, Increased cervical dilation
- Fever
- malaise, s/s of infection
- grief reaction
-
Complete abortion, missed, habitual, septic
Complete: all of fetus and placental material has been expelled from uterus before 20 weeks gestation
Missed: death of fetus with retained products of conception (POC)
Habitual: >3 or more consecutive pregnancies
Septic: SAB or TAB complicated by a pelvic infection, usually begins as endometritis and may spread, primary cause of maternal mortality in developing countries
-
SAB diagnosis and management
Diagnosis: falling HcG levels=death of fetus, by ultrasound
Management: pelvic rest (nothing in VAG), CBCs, monitor VS, assess bleeding/cramping/pain, prepare for surgery prn, medical management: prostaglandins-misoprostel, Rhogam if RH negative
-
TORCH Infections Definition:
- T-Toxoplasmosis
- O-Other: gonorrhea, syphilis, varicella, hep B, GBS, HIV
- R-rubella
- C-cytomegalovirus (CMV)
- H-herpes
-
TORCH infections: risk factors
- pregnancy related or physiologic (UTI)
- exposure to teratogenic infections
- STIs
- Children at daycare (cmv)
- cat litter exposure (toxo)
-
TORCH infections: diagnostic tests and Signs/symptoms
Diagnostic tests: Screen throughout pregnancy-torch titer, IGM-recent infection (igM doesnt cross placenta) so IgM in baby=strongly suggestive of exposure, IgG-past.
S/S: asymptomatic or vague, nospecific s/s (fatigue, enlarged lymph nodes, fever, mono-like s/s, genital infection, cervical inflammation, rash)
-
TORCH infections: Toxoplasmosis
- Single celled parasite called toxoplasma gondii
- Mostly asymptomatic
- Transmission: Transplacental, ingestion of cat feces (litter box, gardening), eating/contact with contam. raw or partly cooked meat esp pork lamb venison, unpastuerized goat milk, drinking contaminated water, receiving infected organ transplant or blood transfusion (rare)
-
TORCH infections: toxoplasmosis s/s, treatment, fetal effects
- S/S: flu-like, swollen lymph nodes, incubation periods is 10 days
- With active maternal infection is 40% risk fetus will get infection
- Treatment: erythromycin, sulfadiazine
- Fetal effects: SAB, fetal hydrocephalus, blindness, deafness, mental retardation
-
TORCH infections: gonorrhea
- Can be transmitted to newborn during birth!
- Pregnancy/fetal effects: SAB, preterm delivery, PROM, opthalmia neonatorum (blindness)
-
TORCH infections: Chlamydia
- Transmitted to newborn during birth
- Pregnancy/fetal effects: PROM, preterm labor, low fetal birth weight, fetal conjunctivitis, pneumonia, opthalmia neonatorum, chronic otitis media
-
TORCH infections: Varicella
- Increase risk varicella pneumonia if acquired during pregnancy
- Fetal complications: risk of congenital varicella syndrome (1st trimester)-skin scarring, small head, eye problems, LBW, small limbs, retardation. If contracted within 5 days before and 2 days after delivery: newborn at risk for disseminated varicella infection=newborn mortality
Treatment: antiviral meds: acyclovir and varicella zoster immunoglobulin (VZIG) for both women and newborn
-
TORCH infections: Syphilis
- Treponema pallidum
Transmitted: either in utero or at delivery - If mother is treated before 18th week, usually not transmitted to fetus
- Preg/fetal effects: SAB, neonatal infection, fetal death, preterm delivery, neonatal CNS, dental, corneal disorders
-
TORCH infections: Group B strep
- Group B streptococcus (GBS): leading cause of neonatal sepsis. 40-70% pass bacteria to newborns during birth, only 1-2% actually get the infection
- Recommended screening: vaginal swab at 36 weeks; Rx with PCN in labor to decrease rate of transmission
- Preg/fetal effects: PTL, PROM, chorioamnionitis, UTI, PP sepsis in mom, stillbirth
- Neonatal effects: sepsis, pneumonia, RDS, apnea, shock; meningitis
-
TORCH infections: Hepatitis B
- If acute infection in 1st trimester: 10% transmission, if in 3rd trim: 80-90% transmission!
- If + or unknown maternal hepatitis status: newborn needs hepB vaccine and hepB immunoglobulin (HBIG) within 12 hours of birth
- Preg/newborn effects: PTL, LBW, fetal death
-
TORCH infections: CMV (cytomegalovirus)
- (Herpes virus family)
- Virus most frequently transmitted during pregnancy and most likely to cause neonatal disease
- Maternal S/S: often asymptomatic, flu-like
- Diagnosis: viral culture-CMV antibodies=recent infection
- Transmission: respiratory droplet (hospitals, daycares)
- No effective prevention or treatment
Preg/fetal effects: fetal/newborn death, retardation, deafness, hydrocephalus, microcephaly, learning disabilities. 90% of infected fetuses are asymptomatic at birth: develop s/s within 1 year!
-
TORCH infections: HIV
- Fetal/newborn HIV/AIDS:
- Vertical transmission=infection via placenta (increased risk with inflammation of fetal membranes, maternal drug use, prolonged ROM)
- Also transmitted via contact at birth, breast milk
-
HIV treatment regimen:
- 3 part ZDV (zidovudine, AZT, or retrovir)
- starting at 14-34 weekds
- reduces risk of transmission of fetus by 70%
- IV ZDV in labor
- Newborn: ZDV liquid form x6weeks
-
TORCH infections: Rubella
- Def: german measles/3day measles
- S/S: fever, rash, cold sxs, mild lymphedema
- Transmission: by respiratory droplets: highly infectious
- Risk factors: contact with young children
- No treatment
- No immunization during pregnancy: need to postpartum-avoid pregancy for 3 months!
-
TORCH infections: Rubella diagnosis, fetal effects
- Diagnosis: screening early, IgG antibodies (titir of 1:10 or >=immune to rubella, titer of 1:8 or <=minimall/no immunity)
- Fetal/neonatal effects of 1st trimester:
- -in 1st 8 weeks, 80% with birth defects
- -SAB, fetal blindness, hearing loss, heart disease, retardation, death
- Fetal/neonatal effects of 2nd trimester:
- -deafness, congenital cataracts, heart disease, liver impairment with jaundice, blood formation disorders (anemia thrombocytopenia)
-
TORCH infections: Herpes
- Initial outbreak: 2-7 days after exposure
- Antibody test: 3-4 months after initial exposure
- Antivirals used during 3rd trimester to decrease risk of transmission (Valacyclovir or Valtrex)
- C-section recommended if visable lesions
- Fetal effects: SAB, PTL, IUGR, neonatal infections of skin, eyes, nose, liver, CNS, seizure, jaundice
-
Parvo B19 virus
- common "fifth disease": mild rash in children-lasts 7 days and provides lasting immunity "slapped cheek", rash on face trunk and limbs
- Adults with no immunity: may develop rash/joint pain for a week to months
- More common in 1st half of pregnancy, severe fetal anemia, SAB
-
Listeriosis
- Pregnant women 20x more likely to contract than other adults
- Mild flu-like s/s-stiff neck, confusion, loss of balance, convulsions
- DX: blood test
- Rx: antibiotics
- Fetal effects: SAB, death, PTL, infection
- PREVENTION: do not eat hot dogs/meat unless reheated until steaming hot, soft cheeses, refridgerated smoked seafood, do not drink raw unpasteurized milk/cider
-
Preterm labor
- Contractions between 20-37 weeks
- Causes:
- -maternal:CV and renal disease, DM, PIH infections, abdominal surgery, incompetent cervix, PROM.
- -fetal: infection, hydramnios, multiple pregnancy, death
-
Maternal risk factors for PTL
- <18 or >35
- Hx of preterm labor
- Multiple pregnancy
- Hydramnios
- smoking
- poor hygeine/nutrition
- infection
- uterine fybroids
- sexual acitivity
- drug use, dehydration
-
Signs/symptoms of PTL
- Rhythmic uterine contractions
- Cervical dilation and effacement
- Possibly ROM
- Expulsion of musuc plug, bloody show
- backache
- feeling that "something is not right"
- pelvic pressure
- increase in vag discharge, abd cramping
- Fetal fibronectin (fFN) not normally in fetal membranes and decidua: +fFN b/t 18-36 weeks, -fFN: very low risk of birth within 7 days
*If >4 contractions in 1 hr=calll!!!!!!
-
Management of PTL
- Teaching of s/s of PTL & actions to be taken
- Medical: assess s/s labor, cervical dilation and effacement, status of membranes, bloody show, sterile spectrum exam for amniotic fluid
- -vag cultures r/o infection
- -monitor uterine activity and fetal status
- -VS, bedrest, side lying position
-
Medications for PTL
- Tocolytic meds:
- -Ritodrine IV or PO
- -Terbutaline sulfate IV, SQ, PO: beta adrenergic agonist, side effects: increase HR, decrease hyperglycemia
- -Magnesium sulfate IV: cns depressent, side effects: warm, affects calcium, decrease respirations
- -Nifedipine PO, SL: calcium channel blocker
- -Indomethacin PO: prostaglandin synthetase inhibitors (stopped using!?)
- Steroid therapY: stimulates lung maturity; 24-34 weeks, 24-48 hrs before delivery (betamethasone)
- Antibiotics
-
Pregnancy Induced Hypertension (PIH)
- Def: HTN disorder of pregnancy developing after 20 wks
- -gestational htn; no proteinuria/edema
- -preeclampsia: htn >140/90 or increase >30mm hg systolic or >15mm hg , proteinuria, edema
- -eclampsia: preeclampsia progressed to tonic-clonic seizures
-
Risk factors/contributing factors for PIH
- Family hx of HTN or previous hx of PIH
- poor prenatal care
- weight extremes and age extremes
- primigravida
- multiples
- preexisting DM, HTN or renal disease
- hydatiform mole
- RH incompatibility
- Infection, exposure to toxins
-
Pathophysiology of Preeclampsia "Toxemia"
- Unknown cause
- Loss of resistance to angiotensin II-decrease prostacyclin (a vasodilator prostaglandin) which increases effect of thromboboxane (vasoconstricting prostaglandin)
- Loss of normal vasodilation of uterine arterioles +maternal vasospasm +increase peripheral vascular resistance=decrease in placental perfusion
- Decrease in renal perfusion=decrease urine output, increase serum creatine, BUN, uric acid, resulting in sodium retention (edema)
-
Pathophysiology of Preeclampsia "toxemia"
- Sodium retention=increase in extracellular volume, increase sensitivity to angiotensin II, edema
- Stretching of glomerular endothelial walls-escape of protein molecules=decrease serum albumin and proteinuria
- Decrease serum albumin concentration=decrease plasma colloid osmotic pressure=edema
- Decrease intravascular volume=Increase blood viscosity and increase hct
-
Cenral Nervous sytem effects
- Increase intracellular sodium and decrease intracellular potassium levels=hyperreflexia
- Cerebral vasospasm=headaches
- Cerebral edema & vasoconstriction=seizures
-
Signs and symptoms of mild preeclampsia
- BP 140/90 or increase systolic BP of 30mm hg/15 mm diastolic twice, 6 hrs apart.
- Proteinuria-trace to 1+,2+
- Mild-mod pretibial edema with weight gain of 5 lb/week
-
Severe preeclampsia
- BP> 160/110
- Proteinuria 3+, 4+ or >4-5 grams in 24 hrs
- Sudden large weight gain, facial edema, pitting pretibial edema
- CNS irritability (headache, hyperreflexia, retinal edema, dyspnea, epigastric pain, N+V)
- Labs: Increase hct, liver enzymes (ALT, AST), BUN, creatinine, uric acid
-
Eclampsia
- BP >160/110
- Grand mal seizures, coma, stroke, fetal and maternal death
- -cerebral hemorrhage, pulm edema, CHF
-
Eclampsia management
- Side lying bedrest
- quiet, calm environment
- high protein diet, no salt restriction
- Monitor VS, edema, lung sounds, DTR (deep tendon reflexes), renal function (I&O), fetal status
- emergency meds/equip at bedside
-
Primary medication for preeclampsia
- Magnesium Sulfate:
- Therapeutic blood levels: 5-8mg/dl
- Assess urine output
- Assess for TOXICITY!!! (depressed DTRs, R<12-14/min, flaccid muscles, over-sedation, confusion
- Extreme thirst
- Hypotension, circulatory collapse
- ANTIDOTE TO magnesium sulfate: calcium gluconate!
*Risk for postpartum hemorrhage...boggy uterus*
-
Hemolytic disease of fetus and newborn
- Def: immune reaction by mother's blood against the blood group factor on fetus' red blood cells
- ABO: mother O Fetus A,B
- -20% of pregnancies
- RH
-
Pregnancy with Rh positive fetus
 **NOT normal for those (+'s) to get into mother's circulation
-
Pregnancy with Rh positive after delivery
 After delivery, more is leaked into mother
-
After pregnancy, antibodies start to form:
 Antibodies starting to form after pregnancy=NOT GOOD
-
Subsequent pregnancies with an RH+ fetus
 Antibodies are trying to attack new fetus=not good! TREAT WITH RHOGAM/prevent. works up to 72 hours
-
Fetal effects of RH sensitization
- Hemolysis of fetal rbc-immature rbc production (erthryoblastosis fetalis)
- Jaundice, marked fetal edema, CHF
- Kernicterus, permanent neuro damage
-
Diagnosis of RH disease
- Blood group testing
- Antibody screening (indirect Coombs test)
- Direct coombs test on infant after birth
-
Management of RH disease
Unsensitized mother: Rhogam at 28 weeks and within 72 hrs of birth. Rhogam is an anti RH gamma globulin that prevents production of maternal antibodies to fetal cells.
Sensitized mother (isoimmunization): close fetal monitoring, including amniocentesis, percutaneous umbilical cord blood sampling, indirect coombs test
-
Hyperemesis Gravidarium
- Def: persistant servere vomiting beyond 1st trimester, resulting in electrolyte, metabolic & nutritional imbalances.
- Causes: ?Increase in HcG, ?Helobacter pylori. Increase incidence with primigravidass, multifetals, & women with psych disorders
-
Hyperemesis Gravidarium: s/s, management, complications
- S/S: electrolyte imbalance/acidosis (ketosis, confusion, drowsiness, muscle weakness)
- Management: Hospitalization, IV, TPN prn, medications (zofran)
- Complications: dehydration, electrolyte imbalance, severe weight loss, metabolic alkalosis [LAB finding: hypokalemia!]
-
Hydatiform Mole: Definition, causes, s/s, diagnosis, manangement
- Def: developmental placenta anomaly that converts chorionic villi into a mass of clear vesicles.
- Causes: Unknown patho, neoplastic process, more common in Asians!
- S/S: Increase uterine size, excess N+V, intermittent bright red/brownish vag bleeding by 12 weeks, very high hCG
- Diagnosis: ultrasound, s/s of hyperthyroidism (weight loss, bulge eyes, hair falling out)
- Management: D&E/hysterectomy, pelvic exam and HCG monitoring for 1 year bc malignant disease can develop, avoid pregnancy for 1 year!, chemo..
-
Ectopic pregnancy
- Def: embryo implants anywhere except uterine endometrium
- Causes: conditions that alter ovum passage through tubes (Decrease incidence with combined ocps, increased in last 30 years bc of IUD's, STIs and surgery's)
**It can implant anywhere: tube, in the muscle, cervix, ovary, ABDOMEN!!
-
Ectopic pregnancy risk factors and s/s:
- Risk factors: Scarring, adhesions (use of IUD, tubal surgery), previous ectopic pregnancy, tubal ligation
- S/S: Last menstraul period consistant with possible pregnancy, may be asymptomatic or dizziness, sharp abd pain(often unilateral), referred shoulder pain, vag bleeding, adnexal mass tenderness (pain from "tube"), s/s of shock
-
Ectopic pregnancy: Diagnosis and management
- Diagnosis: Beta HcG confirms pregnancy; vaginal u/s after 4-5 wks confirms extrauterine pregnancy, pelvic exam.
- Management: Monitor VS, bleeding, pain; prepare for surgery-lapratomy with ruptured tube, laparoscopy without.
- Medical management: methotrexate (only if caught early enough) 4-5wks, Watch for Cullen's sign: blood in perineum (blueness around umbilicus)
-
Incompetent cervix: definition, causes, management
 - Def: painless effacement and dilation of cervix usually in 2nd trimester, often diagnosed by repetitive 2nd trimester losses or by transvag ultrasound
- Causes: many factors; abnormal cervix, biochemical alterations, uterine malformations (bicornuate uterus, pic above).
- Management: elective cerclage at 14-16 wks, suture and tie uterus. Education r/t s/s of preterm labor, bedrest/trendelenberg position (puts pressure off cervix), hospitlization, remove suture with s/s of labor
-
Iron deficiency anemia in pregnancy: definition, causes, risk factors
- Def: Hgb<10 g/dL ; Hct<35% during 2/3 trimester, common
- Causes: nutritional deficiences, acute and chronic blood loss
- Risk factors: previous preprego anemia, poor nutrition, multiples, smoking, alcohol
-
Iron defeciency anemia: s/s, management, complications
- S/S: excess fatigue, HA, tachy, brittle fingernails, smooth red shiny tongue
- Management: instruct about sources of iron and supplementation. iron best absorbed on empty stomach, high fluids/fiber to avoid constipation, vit C increases absorption, expect black stools, milk inhibits absorption
- Complications: PTL or birth, poor wound healing, infection, cardiac failure in labor, Increase risk for postpartum hemorrhage
-
Sickle cell anemia in pregnancy: def, risk factors, s/s, maternal/fetal risks, manangement
- Def: autosomal recessive disorder-adult Hb A is abnormally formed hemoglobin S. Hgb S causes rbcs to be crescent shaped which clogs capillaries in spleen, bone marrow and placenta
- risk factors: Africans, central america, caribbean...
- S/S: Hx of frequent illness, acute reoccuring episodes of tissue, abd, and joint pain, appears unnourished, long thin extremities. *Antibiotics to prevent infections**
- Maternal risk: vaso-occlusive crisis-infection. Fetal risk: IUGR, prematurity, death.
- Manangement: Increase hydration, avoid infections, seek immediate treatment
-
PLACENTA PREVIA: 3 TYPES
- Placenta previa:
- -low lying: placenta is close to opening of uterus..watch for bleeding!
- -Partial: placenta is partially covering opening
- -Complete: entire placenta is blocking baby=c-section!
-
Predisposing factors for placenta previa
- Multiparity
- Increase maternal age
- Previous c-section or uterine incisions
- Prior placenta previa
- closely spaced pregnancies
- uterine tumors
- previous induced abortions
-
S/S for placenta previa:
- Bright red, PAINLESS BLEEDING, after 20th week of pregnany
- Abd soft, non tender; uterus relaxes b/t contractions
- FHR stable, fetal presenting part unengaged
- Diagnose: ultrasound
-
Nursing management for placenta previa:
- NO CERVICAL EXAM with any prego woman with vaginal bleeding!!-you can stick fingers thru placenta..hemorrhage!
- Monitor VS/bleeding; observe for shock
- Monitor FHR
- Blood work, IV, strict bed rest
- If preterm..giver betamethasone so lungs develop
- Complications: hemorrhage, fetal distress, IUGR, C/S, preterm birth, PROM
-
Other placenta abnormalities: accreta, increta, and percreta
- Placenta accreta: placenta attaches too deep in uterine wall but does not penetrate the uterine muscles.
- Increta: placenta implants into uterine muscle.
- Percreta: placenta penetrates thru entire uterine wall and attaches to another organ, such as bladder!!
-
PLACENTA ABRUPTION: definition
- Premature seperation of a normally implanted placenta during the 2nd half of pregnancy
- Medical emergency=risk of maternal hemorrhage and fetal death, 10-30% develop clotting defects (DIC)
-
Risk factors for Placental abruption:
- Maternal HYPERTENSION (44%)Cocaine abuse
- Abdominal trauma
-
S/S of placental abruption:
- Concealed or external dark red bleeding
- Uterus firm-board-like, uterine outline possibly enlarging or changing shape
- SEVERE CONTINUOUS PAIN
- FHR present or fetal distress
- Couvelaire uterus (blood gets pushed back into uterus...pp hemorrhage!)
-
Placental abruption: diagnosis, complications, management
- Diagnosis: U/S, CBC, coagulation profile
- Complications: severe hemorrhage, shock, renal failure, DIC, maternal and fetal death
- Management: monitor VS, bleeding, FHR activity, degree of abd rigidity, signs of shock, NO VAG EXAM or anything that would stimulate uterine activity, abd girth
-
HELLP syndrome: what does it stand for and s/s:
- H-hemolysis
- E-elevated
- L-liver enzymes
- L-low
- P-platelets
S/S: epigastric or RUQ pain, N+V, flu-like s/s, history of malaise for past few days, sig weight gain with edema, HTN, increase D Dimer test (used to r/o throbotic disease)
-
HELLP syndrome: causes/risk factors, management, complications
- causes/risk factors: HTN/preeclampsia, thrombocytopenia, obesity, multiparity, hx of high risk pregnancies
- Management: bedrest, monitor kidney/liver function, platelets (most reliable indicator of syndrome), evaluation of uteroplacental insufficiency: kick counts, NST, BPP, mag sulf infusion, prompt delivery of infant >32 wks
- complications: IUGR, RDS, perinatal mortality worse than maternal, Increase risk acute renal failure, pulm edema,hepatic rupture, increase risk placenta abruption and DIC
-
Pyelonephritis: def, causes, s/s, management, complications
- Def: inflammation of upper urinary tract + urine culture
- causes: #1 risk factor-hx of lower UTI; also kidney stones
- s/s: severe colicky pain, N+V, dehydration, dysuria, freq/urgency, suprapubic discomfort, flank pain, fever, chills
- Management: Hydration, in pregnancy-IV antibiotics followed by orals, bedrest, teaching of s/s of UTI
- Complications: IUGR, preterm L&D
-
Polyhydramnios: def, associated factors, s/s
- Def: >2000cc of amniotic fluid, chronic or acute. exact cuase unknown
- Associated factors: DM, congenital anomalies, RH isoimmunization, multiples
- S/S: abd discomfort, dyspnea, orthopnea, edema of legs &abd, uterine size>expected, fetal outline diff. to palpate and hearing FHR
-
Polyhydramnios: management and complications
- Management: High protein, low salt diet, mild sedation, amniocentesis to remove excess fluid, induction of labor if fetus is mature.
- Complications: umbilical cord prolapse +/or placenta abruption with ROM; Increase incidence malpresentations, increase perinatal mortality from fetal malformations, preterm births, uterine dysfunction in labor, Increase pp hemorrhage
-
Oligohydramnios: def, associated factors
- Def: severely reduced amniotic fluid; occurs with PROM; rare. Fetus easily palpable and outlined, ballotable
- Associated factors: postmature infants, IUGR, renal anomalies, dysfunctional slow labor,diagnosed by u/s.
-
Oligohydramnios: management and complications
- Management: US, NST, BPP, kick counts, hydration, side lying bedrest, good nutrition, amnioinfusion (for variable decels...makes cord float)
- Complications: prolonged dysfunctional labor, renal anomalies, wrinkled leathery skin, increase skeletal deformities, fetal distress in labor d/t cord compression
-
Premature Rupture of Membranes (PROM)
- Def: premature rupture of membranes prior to labor
- -there is also PPROM (preterm premature rupture of membranes) prior to 37wks
- -also prolonged rupture of membranes, >12hrs before birth.
-
Causes/predisposing factors of PROM
- Unknown, but associated with:
- -previous hx of PROM
- -multiple pregnancy
- -malpresentation
- -hydramnios
- UTI, infections
-
PROM s/s, diagnosis, complications
- S/S: watery, clear, or meconium stained amniotic fluid leaking. Foul-smelling vag discharge assoc with uterine tenderness (infection!!)
- Diagnosis: Sterile spectrum exam-+ferning+nitrazine paper+amnisure.
- Complications: risk of RDS, fetal sepsis malpresentation, umbilical cord prolapse, increase risk for placenta abruption
-
Management for PROM
- Assess for amniotic fluid
- Assess FHR
- Temp q2 hours
- avoid cervical exams
- monitor uterine activity
- Assess s/s of infection!! =fetal tachycardia
- Bedrest, antibiotics, betamethasone for fetal lung maturity if <37wks
-
Substance abuse: effects and signs
- -Ages 21-24 most common-
- Effects: IUGR, prematurity, death, seizures, SAB, abruption, fetal alcohol syndrome
- Signs of maternal addiction: constricted pupils, dental acries, mood swings, rhinitis, anorexia, no prenatal care, fast hr, stds
-
Signs of withdrawal in newborn:
Listlessness, poor muscle reflexes, poor feeding, uncoordinated suck-swallow, HIGH pitched cry, jitterness, inability to be consoled when crying.
-
Accident/trauma in pregnancy
- *Trauma is the most common cause of non-obstetric death amoung prego women in the U.S.**
- Causes: MVAs, domestic violence, falls
|
|