-
What are the Signs & Symptoms of Tension Pneumothorax?
- Agitation/Anxiety
- Severe respiratory distress/dyspnea
- Decreased or absent breath sounds
- Tracheal Shift
- Late sign on external exam
- Early sign on radiographic
- SQ air
- JVD
- Cyanosis
-
What are the landmarks for the acceptable needle thoracostomy sites?
- 2nd intercostal space, mid-clavicular or4th or 5th intercostal space, mid-axillary line
-
What are the landmarks for tube thoracostomy placement?
4th intercostal space anterior axillary line
-
What should be delayed as long as possible when pt is potentially experiencing a tension pneumothorax?
-
What are the signs & symptoms of massive hemothorax?
- Hypovolemic shock
- Altered mentation
- Decreased/absent breath sounds
- Midline trachea
- Flat neck veins
-
How do you treat a massive hemothorax?
- Tube thoracostomy
- Crystalloid replacement
- Blood replacement
- Intubate
-
What are the signs & symptoms of an open pneumothorax?
- Sucking chest wound
- Respiratory distress
- Tachypnea
- Grunting
- Shock
-
What is the treatment for an open pneumothorax?
- Occlusive dressing
- Placed upon end exhalation
- Taped on 3 sides only until tube thoracostomy accomplished
- Seal 4th side post-chest tube
-
What are the signs & symptoms of flail chest?
- Paradoxical movement
- Uncommon in spontaneous breathing
- Common w/NMBA’s
- Respiratory distress
- Tachypnea w/grunting
- Accessory muscle use
- Cyanosis
- C/O severe chest pain
-
What are the treatments for flail chest?
- Attempt to stabilize flail segment
- Consider intubation w/peep
- Injured side down
- Limit fluids as able
- Opioids for pain PRN
-
What are the signs & symptoms of early tamponade?
- Sinus tachycardia
- Pulsus paradoxus
-
What are the signs & symptoms of late tamponade?
- Severe hypotension
- Beck’s triad Muffled heart tones
- JVD
- Narrowed pulse pressure
-
What is the treatment for early tamponade?
- Force fluids
- Anticipate tamponade progression
-
What is the treatment for late tamponade?
Pericardiocentesis
-
What are the signs and symptoms of aortic rupture?
- Severe Chest/Mid-scapular pain
- Dyspnea
- HTN in the upper extremities
- Harsh systolic murmur
- CXR findings: Widened Mediastinum
-
Describe the treatment of aortic rupture
- Supportive: If caval or liver lac suspected, est IV access above & below the diaphragm
- Rapid transport to thoracic surgeon
-
Describe the clinical presentation of diphragmatic rupture
- Dyspnea
- Bowel sounds in chest
- Cyanosis
- Scaphoid abdomen
-
Describe the treatment of diaphragmatic rupture
- NGT / OGT
- Strict NPO
- ETI / PPV PRN
-
Describe the presentation of tracheobronchial disruption
- Continuous air leak or persistent pneumothorax
- Rapidly progressing subcutaneous emphysema
- Pneumomediastinum
-
Describe the treatment of tracheobronchial disruption
- Supportive
- Consider mainstem intubation trial
-
Describe the clinical presentation of esophageal perforation
- Hematemesis
- Dysphagia
- Dyspnea
- Fever
- Shock
-
Describe the treatment of esophageal perforation
- Supportive
- NGT / OGT
- Antiemetics
- Antibiotics
-
What is Newton’s 1st Law?
An object in motion will remain in motion and an object at rest will remain at rest, unless acted upon by a force
-
What is Newton’s 2nd Law?
F = MA
-
What is Newton’s 3rd Law?
For every action there is an equal and opposite reaction
-
Describe injuries common to head-on collisions w/an up-and-over path of the body
- Head injuries
- Axial loading on the neck
- Chest injuries from steering wheel
- Pelvis injuries from belt
-
Describe injuries common to head-on collisions w/an down-and-under path of the body
- Acetabular fx
- Femur fx
- Pelvic fx
- Low back injuries
- Chest & facial injuries from steering wheel
-
Describe predictable injury patterns suffered in rear end collisions
- T12-L1 back injuries
- Femur fx
- Tib/Fib fx
- Ankle Fx
- C2 fx of neck
- Evaluate for 2nd impact injuries
-
What are the 2 most common spinal injuries?
-
What type of collision causes the most lethal injuries?
Rollover collisions
-
What is indicative of adequate oxygenation in trauma management?
SpO2 > 90%
-
How do you assess for adequate ventilation in trauma management?
Monitor ETCO2
-
Which VS is more more likely to alter 1st in the trauma patient?
HR - BP won't fall until EBL > 30-40%
-
Describe reasons for increased risk pattern in farming accidents
- Delayed arrival of medical care & extrication often increase mortality
- High potential for HAZMAT involvement
-
Describe why tractor (farm) accidents raise the index of suspicion for MOI
- Tractors are much heavier than autos
- Tractors have a high center of gravity making them prone to rollovers
- End over end rollovers have a greater potential for pt entrapment
-
What age groups statistically suffer more falls?
Primarily in adults & children under 5
-
What part of a child's body will impact 1st in a fall?
Impact on their head
-
How do adults injure themselves in a fall?
“Lover’s Leap”: Victim impacts on feet then falls backwards landing on buttocks & outstretched hands
-
What injuries are common d/t the sequence of impacts often suffered in falls by adults?
- Fx of feet/legs
- Hip & pelvic injuries
- Axial loading to the lumbar & cervical
- spines
- Vertical deceleration forces on organs
- Colle’s fxs of the wrists
-
What are general areas of concern in impalements / stab wounds?
- Area of body penetrated
- Blade length
- Angle of penetration / attacker sex
-
What are general areas of concern in GSWs?
- Type of weapon
- Caliber, handgun vs long gun
- Distance from weapon
- Bullet construction
- High velocity bullets travel @ > 2000 fps
-
How many distinct injury profiles can a victim experience from a blast?
3: Primary, Secondary & Tertiary
-
Describe the injury pattern seen in a Primary Injury from a Blast
Result of Initial air blast, causes Injuries to air containing organs
-
What causes the injury pattern seen in a Secondary Injury from a Blast?
Victim struck by projectiles launched by blast force
-
What causes the injury pattern seen in a Tertiary Injury from a Blast?
Victim impacting the ground or another object
-
What is the primary concern in a burn patient?
Airway early
-
What common byproducts of combustion complicate burn management?
-
The combustion of what material results in the release of cyanide gas?
Petroleum products, esp household carpet
-
What is the goal of fluid resuscitation in the adult (child) burn patient?
Urinary output of 30-50 ml/hr (1-2 ml/kg/hr in peds)
-
What is the Parkland Burn Formula?
- 4 mL*kg*%BSA burned = VTBI
- Give 1/2 over the 1st 8 hrs post burn
- Give the remaining 1/2 over the following 16 hrs
-
What is the Consensus Formula for burn pt fluid resuscitation?
2-4 mL*kg*%BSA burned
-
How do you calculate burn mortality?
- Age ÷ % BSA Burned = Mortality %
- Add 20 if respiratory involvement
-
What is the treatment paradigm for hydrofluoric acid burns?
- Copiuos water
- 10% Calcium Gluconate
-
What is the treatment paradigm for alkali metal burns (Na & K)?
- Water reactive
- Absorb heat w/oil
-
What process generally limits the depth of acid burns?
Coagulative necrosis
-
Describe the mechanism of alkali burns
Alkalis dissolve protein & collagen causing dehydration & saponification
-
Define saponification
- Conversion into soap. It is the hydrolysis or the splitting of fat by an alkali yielding glycerol & 3 molecules of alkali salt of the fatty acid, the soap.
- Hydrolysis of an ester into its corresponding alcohol & acid (free or in the form of a salt).
-
Generally, which causes more severe burns, acids or alkalis?
Alkalis
-
What are the 2 modes of EMS @ a HazMat scene?
- Fast Break
- Long-Term decision making
-
Describe the "Two-Step" Decon process
- Usually at a fast break scenario
- Remove all clothing, shoes, jewelry
- Wash & rinse patient w/soap & water making sure they do not stand in runoff
- Reposition out of runoff & repeat a 2nd time
-
What byproduct of massive muscle damage 2° to electrical injury will result in ATN & renal injury failure?
Myoglobinuria
-
Describe the clinical management of myoglobinuria 2° to electrical injury
- Maintain urine output of a MINIMUM 100 ml/hr w/fluids
- Osmotic diuretics
- Alkalinize the urine w/bicarb solutions
-
Describe the Respiratory assessment for START Triage
- Immediate: Abnormal rate, WOB or respiratory distress
- Delayed: Normal respiratory pattern or agonal
- Dead: Apneic
-
Describe the Perfusion assessment for START Triage
- Immediate: Cap Refill > 2 sec
- Delayed: Normal Cap Refill
- Dead: Pulseless
-
Describe the Mentation assessment for START Triage
- Immediate: Altered LOC
- Delayed: Conscious, A&O x 3
- Dead: Injuries incompatible w/life
-
How long should a START Triage assessment take for each pt?
15-30 seconds
-
What can you do in START Triage if patient is apneic?
- Reposition the head once
- If spontaneous resps resume, pt is triaged immediate
- If spontaneous resps do NOT resume, pt is triaged dead
-
How is penetrating trunk trauma classified according to START Triage?
Immediate
-
An emergency responder is injured at the scen of an MCI. According to START Triage, what is their designation?
- ImmediateAll responders injured at an MCI are triaged immediate
-
Where is cap refill assessed in START Triage?
Centrally
-
How are Erythrocytes listed on lab reports?
RBC
-
How are Leukocytes listed on lab reports?
WBC
-
How are Thrombocytes listed on lab reports?
Plt (Platelets)
-
How is Hemoglobin listed on lab reports?
- Hgb
- Hemoglobin is the O2 binding protein in RBCs
-
How is Hematocrit listed on lab reports?
- Hct
- Hematocrit is the percentage of blood that is not fluid
-
Describe plasma
- Fluid part of the blood
- 91% is H2O
- 7% are proteins (Primary is Albumin @ 60%)
-
What is a normal lab value for RBC?
5
-
What is a normal lab value for Hgb?
15
-
What is a normal lab value for Hct?
45
-
What is a normal lab range for WBC?
5k - 10k
-
What is a normal lab range for Plt?
150k - 400k
-
What is a normal lab range for Na+?
135 - 145
-
What is a normal lab range for K+?
3.5 - 5.0
-
What is a normal lab range for Cl-?
95 - 107
-
What is a normal lab value for BUN?
10
-
What is a normal lab value for Creat?
1
-
Blood loss is replaced by isotonic crystalloid by iv @ what ratio?
3 : 1
-
At what value should MAP be maintained w/fluids?
80-90 mmHg
-
Describe the process of bleeding control
- Vessel spasm upon injury to tissue themselves
- Platelet plug development (primary hemostasis)
- Platelets attach to exposed collagen vi von
- Willebrand’s factor (vWF)
- Clotting cascade activation by platelets triggered secretion of thromboxane A2 (TXA2) [location of ASA & NSAID interference]
- Extrinsic
- Intrinsic
- Clot formation occurs (secondary hemostasis)
- Clot retraction closes vessel approximately 20 min to 1 hr later
-
How is the intrinsic pathway of clotting cascade activated?
- Triggered by endothelial damage w/collagen
- exposureVessel damage
-
How is the extrinsic pathway of clotting cascade activated?
- Triggered by tissue damage w/tissue thromboplastin release
- Highest quantities in
- Brain
- Placenta
-
What mineral is essential at several steps along the clotting pathway?
Calcium essential at numerous steps along the pathway
-
Describe Disseminated Intravascular Coagulopathy (DIC)
- Sepsis, massive tissue trauma &/or hypoxia causes systemic activation of clotting cascade by overwhelming release of tissue thromboplastin (tissue factor).
- Problem resides w/clotting ultimately.
- MODS & death result from entire systems losing blood flow d/t mass micro emboli occlusion.
-
How is DIC diagnosed?
- Diagnosis is based on clinical presentation
- History
- + D-Dimer
- Low clotting factors (fibrinogen) & platelets
- High PT, aPTT, INR & FSPs
-
How do we treat DIC?
Focus on treating the precipitating event
-
When should PRBCs be administered?
Given to ⇧ O2 carrying capacity of blood ONLY
-
Above what Hgb level are PRBCs NOT indicated?
> 10 mg/dl
-
Below what Hgb level are RBCs indicated?
< 6 mg/dl
-
At what Hgb level should pts receive PRBCs prior to proceeding to altitude (flight)?
8 mg/dl
-
How fast SHOULD PRBCs be given?
- Over 2-4 hrs
- Can be given fast emergently, but RBC lysis increases under pressure
-
Are ABO antigens a concern when administering PRBCs?
Yes, watch for acute hemolytic reactions (temp & back px)
-
What blood type is considered the universal donor?
O-
-
What blood type is considered the universal recipient?
AB+
-
What is the volume of 1 unit of PRBCs?
~330 cc
-
What is the pediatric dosing for PRBCs?
10 cc/kg
-
When does citrate toxicity become a concern?
- Multiple units &/or fast push (4 units < 20 min)
- [> 1 ml/kg/min]
-
How much will 1 unit of PRBCs impact a patient's H&H?
Raise it by 1 & 3
-
How is temperature a concern when administering PRBCs?
- Need to re-warm the PRBCs.
- Every unit PRBCs given @ storage temp will drop core temp 0.25°C
- Hypothermic pts don't clot!
-
What should be administered concurrent with PRBCs?
Equal volumes of NS
-
What concerns re K+ arise during blood admin?
- Admin rates > 90-120 ml/min can cause clinically significant hyperkalemia & arrest
- Watch ECG for Δs, if seen stop blood immediately & consider NaHCO3-, Dextrose & Insulin as appropriate
-
What is the pathology of a hemolytic reaction?
ABO incompatibility
-
Describe the signs & symptoms of a hemolytic reaction?
- Fever
- Chills
- Back pain
- Dyspnea
-
How quickly will a hemolytic reaction develop?
Shortly after transfusion
-
What is the treatment for a hemolytic reaction?
- Stop transfusion
- Supportive care
-
What is the treatment for an anaphylactic reaction to blood transfusion?
- Stop transfusion
- Epi
- Steriods
-
What is the treatment for a febrile reaction to blood transfusion?
Stop transfusion
-
What is the treatment for circulatory overload secondary to blood transfusion?
-
What percentage of acute hemolytic reactions will develop DIC?
30-50%
-
Describe the treatment of acute hemolytic reaction
- Treatment focuses on:
- Support hemodynamics w/fluids & pressors
- Maintain renal perfusion & function w/fluids & diuretics
- Prevention of DIC: Maintain pressure & oxygenation
-
What are the indications for FFP administration?
- Coumadin therapy reversal
- DIC
- Antithrombin III deficiency
- S/P extended heparin therapy
- Dilutional coagulopathy (> 1 blood volume of replacement [10 units of PRBCs]
- Commonly given 1:4 w/PRBCs until 10 units of PRBCs then 1:1
- May be given as a volume expander or for coagulation factors
-
What is platelet infusion indicated for?
- Platelet deficiency
- ASA Guidelines: “platelet transfusion is rarely indicated when platelet count is greater than 100,000 and is usually indicated w/a count below 50,000”
-
What equipment requirements are there for platelet administration?
Use a filter w/a 19 ga or larger needle
-
How much will 1 unit increase the platelet count?
~5-10k
-
Cryoprecipitate has high levels of what?
Fibrinogen
-
When is cryoprecitiate given?
- DIC
- Hemophilia A
- von Willebrand Disease (vWD)
- Stop tPA induced bleeding
-
What is the normal infusion rate for cryoprecipitate?
10 ml/min
-
What is the normal adult dose for cryoprecipitate?
10 units
-
What are the most common indications for emergent cryoprecipitate administration?
- Massive PRBC infusions
- tPA related bleeding
-
What components make up cryoprecipitate?
- Factor VIII:C
- Factor XIII – Fibrinogen stabilizing factor
- von Willebrand factor
- Fibrinogen
-
How is the rib cage of a child different than an adult?
More elastic & flexible
-
How does a child's lung tissue compare to n adult's?
More fragile
-
Compare the mediastinum of a child to that of an adult
The child's mediastinum is more mobile
-
Compare the bones of the skull of a child to that of a patient older than 5 YOA?
Soft & separated by cartilage until 5 YOA
-
When do the fontanelles close in a child's skull?
- Anterior closes @ 12-18 mos
- Posterior closes by 2 mos
-
Compare the liver & spleen of a child to an older patient
- Proportionally larger
- More vascular
-
How are the bones of a child different than those of an older patient?
They are softer
-
Compare the cardiac output of a child to that of an adult
-
At what point will hypotension present in the case of a child with acute blood loss?
Children will not demonstrate hypotension until acute blood loss totals ~ 25% of the circulating blood volume
-
Compare the surface area to volume ratio of a child to that of an adult
- Larger ratio of surface area to volume: This
- influences heat loss primarily
-
What are the 3 components of a pediatric assessment?
- LOC
- Perfusion Status
- Work of Breathing
-
How does the tongue in a child's mouth differ than that of an adult?
A child's tongue takes up more room in the mouth
-
Describe the epiglottis of a child in relation to the airway
Short, narrow & angled away from the long axis of the trachea
-
Describe the anatomical differences in a child's airway
- Larynx is higher
- Short chin gives more anterior relationship
-
Where is the narrowest portion of the airway in a child < 10 YOA?
@ the cricoid cartilage
-
Compare O2 consumption in an infant to that of an adult
O2 consumption in infants = 2x that of an adult
-
What size tube should be used to intubate a pre-term infant?
2.5 - 3.0
-
What size tube should be used to intubate a term infant?
3.0 – 3.5
-
What size tube should be used to intubate a 3 MOA - 1 YOA infant?
4.5 - 4.0
-
What formula solves for the size tube used to intubate a pediatric patient > 1YOA?
-
What is the depth of insertion when intubating a pre-term neonate < 1000 gm in mass?
6 cm
-
What is the depth of insertion when intubating a pre-term neonate btn 1000 gm & 2000 gm in mass?
7 - 9 cm
-
What is the depth of insertion when intubating a term neonate?
10 cm
-
What is the depth of insertion when intubating a 1 YOA child?
11 cm
-
What is the depth of insertion when intubating a 2 YOA child?
12 cm
-
What is the formula for determining depth of insertion when intubating a child older than 2 YOA?
- 3 x ETT Size or
- (Age/2)+ 12
-
Describe the anatomical presentation of Pierre Robin
- Short Chin
- Antero/superior glottis
- Arched cleft palate common
-
Describe the anatomical presentation of Treacher-Collins
- Short chin
- Dental malformations
-
Describe the anatomical presentation of Hurler’s Syndrome
- Macrocephalic
- Short neck
- Scoliosis common
-
Describe the anatomical presentation of Goldenhar Syndrome
- Facial asymmetry
- Small mouth/limited opening
-
What is the bolus dose for a child?
20 mL/kg then reassess, repeat PRN
-
What is the IV bolus dose for an infant/neonate?
10 mL/kg then reassess, repeat PRN
-
What is the Estimated Blood Volume (EBV) of a child > 1 YOA?
70 mL/kg
-
What is the Estimated Blood Volume (EBV) of a child 3 mos - 1 YOA?
70-80 mL/kg
-
What is the Estimated Blood Volume (EBV) of a term neonate?
80-90 mL/kg
-
What is the Estimated Blood Volume (EBV) of a premature neonate?
90-100 mL/kg
-
What is the formula to calculate Maximum Allowable Blood Loss in a child?
-
What is the minimum acceptable Hct for the flight environment?
28
-
Describe the formula for calculating IV Maintenance Infusion rates for children
- 4 /2 /1 System4 ml/kg for the 1st 10 kgs of mass
- 2 ml/kg for the 2nd 10
- 1 ml/kg for every kg over 20
-
Describe continuous monitoring guidelines for pediatric patients
- Continuous skin temp monitoring recommended, esophageal / rectal probe optimal
- Continuous SPO2 monitoring: “Standard of care”
- Glucose monitoring PRN
-
What is considered hypoglycemia in a neonate?
- < 30 mg/dl
- Use D10 to correct
-
What is considered hypoglycemia in a child?
- < 40 mg/dl
- Use D25 to correct
-
What is the optimal IV fluid for children < 2 YOA?
- NSKidneys are better able to deal w/excess Na+
-
What is the pediatric dose for synchronized cardioversion?
0.5-1.0 J/kg
-
What is the pediatric dose for defibrillation?
2 J/kg then 4 J/kg
-
What is the pediatric dose of adenosine?
0.1-0.2 mg/kg rapid IVP
-
What is the pediatric dose of atropine?
0.02 mg/kg IV min 0.1 mg max 0.5 mg
-
What is the pediatric dose of dobutamine?
2-20 mcg/kg/min IV gtt
-
What is the pediatric dose of dopamine?
2-20 mcg/kg/min IV gtt
-
What is the pediatric dose of epinephrine?
- 0.01 mg/kg IV 1:10,000
- 0.1 mg/kg ET 1:1000
- Infusion: 0.1-1.0 mcg/kg/min IV gtt
-
What is the pediatric dose of lidocaine?
1 mg/kg
-
What is the pediatric dose of naloxone?
- < 20 kg: 0.1 mg/kg IV
- > 20 kg: 0.4-2.0 mg IV
-
What is the pediatric dose of sodium bicarbonate?
- 1 mEq/kg IV or
- 0.3 mg x kg x base deficit IV
-
Describe Wadell's Triad
- Common Injuries when a child is struck by a motor vehicle:
- Head
- Trunk
- Extremities
-
What is the single largest cause of pediatric traumatic death?
Motor vehicle related accidents
-
What is the most common non-accidental-trauma pediatric injury type?
Skin
-
What system is injured the most in non-accidental-trauma?
Integumentary
-
What type of injuries best demonstrate long term abuse?
Skeletal
-
What injuries are sustained during sexual abuse of a child?
Genitourinary
-
Describe a comminuted fracture
Bone is broken into fragments
-
Describe a compound fracture
Bone is broken & piercing the skin
-
Describe a compressed fracture
One bone is forced against another
-
Describe a displaced fracture
The ends of the bone are not aligned
-
Describe a greenstick fracture
Periosteum divided on only 1 side
-
Describe a pathological fracture
Occurs because of a bone defect
-
Describe a simple fracture
Fracture is straight & in good alignment
-
Describe a spiral fracture
Fracture resulting from twisting motion
-
Isolette use is recommended in what group of patients?
< 10 lbs or 30 days (corrected age)
-
What neuro Δs can you expect w/temp Δs?
-
What perfusion status Δs can you expect w/temp Δs?
- Hot: Tachycardic
- Cold: Bradycardic & hypotensive
-
What physiologic changes occur w/each ° ⇧ in temp?
-
Is ASA an acceptable febrile therapy for children?
No, d/t Reye's syndrome
-
Describe techniques to keep children warm
- Pre-heat the ambulance
- Keep dry, head covered
- Warm gases via ETT
- Caution w/commercial heat packs
- Plastic or aluminum foil use: Around towel or cellophane wrap
- Warmed saline gauze over open defects
- Fluid warmer
-
Describe standards of care when mechanically ventilating an infant
- Pressure targeted ventilation
- SpO2 & ETCO2 monitoring
-
What are the vent settings for an infant?
- FiO2: 100%
- Inspiratory Time (IT): > 0.5 sec
- Rate: 16 – 40
- PEEP: 0 – 5 cm
- PIP: 15 – 20 cmH2O
-
Describe standards of care when mechanically ventilating a child
- Volume targeted ventilation typical after 6 mos of age
- SpO2 & ETCO2 standard of care
-
What are the vent settings for a child?
- FiO2: 100%
- Tidal Volume (Vt): 6 – 12 mL/kg
- Rate: 16 – 24
- PEEP: 0 – 5 cm
- PIP: < 30 - 40 cmH2O
-
What are common causes of pediatric seizures?
-
Are tonic-clonic seizures common in the pediatric pt population?
Rarely seen d/t immaturity of nervous system
-
Describe subtle seizures as seen in the pediatric population
- Repetitive mouth/tongue movement
- Bicycling
- Eye deviation
- Repetitive blinking
-
Describe clonic seizures as seen in the pediatric population
Repetitive jerky movements of limbs
-
Describe tonic seizures as seen in the pediatric population
May resemble posturing or tonic extension seen in older pts
-
Describe myoclonic seizures as seen in the pediatric population
Multiple jerking motions, usually of the upper extremities
-
Describe the clinical treatment for neonatal diaphragmatic hernia
- Intubation for resp distress; PPV as indicated
- OGT w/suction
- NPO
-
What is the essential issue with choanal atresia?
Nasopharynx obstructed
-
What is the treatment for choanal atresia?
- Provide oral airway access
- OPA
- ETT w/o ventilation possible but pressure support may be needed
-
What are the concerns w/neonatal aspiration pneumonia?
- Meconium staining
- ET suctioning acceptable but discouraged unless lethargic
- Consider risk of TEF: Minimize PPV
- If brisk, monitor only
-
What are the 2 classes of Congenital Hert Disease?
- Acyanotic Lesions
- Cyanotic Lesions
-
Describe Acyanotic Lesions
- Blood returning to the RA has passed through the lungs like normal
- Many of these present w/pulmonary overload & CHF / Pulmonary edema symptoms
-
Name some Acyanotic Lesions
- PDA: Anticipate in low birth weight neonates, delayed closure in premies
- Coarctation of the Aorta
- ASD
- VSD Very common in Down’s Syndrome, ESP males
- Commonly coexistent w/Coarcs & PDAs The most common CHD
- AVSD
- Aortic Stenosis: More common in males
- Pulmonary Stenosis
-
Describe Cyanotic Lesions
Any condition w/true “mixing” of oxygenated & unoxygenated blood. Commonly causes a cyanotic appearance.
- Commonly PDA dependent
- These lesions can cause a Right ⇨
Left shunt w/systemic hypoxia- Typical SaO2 is 75-85%
-
Name some Cyanotic Lesions
- Transposition of the great vessels
- Tetrology of Fallot
- Total Anomalous Pulmonary Venous Return (TAPV)
- Truncus Arteriosus
- Tricuspid Atresia
- Hypoplastic Left Heart Syndrome
-
Describe the therapeutic approach to treating Cyanotic Lesions
Minimize/avoid any stimulus to cough (suctioning, pain, acidosis etc) to prevent pulmonary hypertensive crisis & subsequent increased right ⇨ left shunting
-
What is the most common Congenital Heart Disease?
Ventricular Septal Defect (VSD)
-
Identify transport considerations for pts w/CHDs
- Pressurized cabin is essential
- Specialty teams should be utilized whenever
- possible
- For longer transports Nitric Oxide should be considered / available
- NO air in IV lines
- Monitor SpO2, EtCO2 & electrolytes as closely as able
- Specific repairs (i.e. Blalock Taussic Shunt, aka BT Shunt) prevent use of affected arm for BPs & IVs
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Describe the normal closure of a patent ductus arteriousus (PDA)
Functionally closes at birth, anatomically closes by 21 days old
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Describe the effect of a patent ductus arteriousus (PDA)
- Creates Left ⇨ Right shunt
- Potential for gross pulmonary edema & resp failure
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Describe therapy to close a PDA
- O2
- Indomethagin (PGE1 inhibitor)
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Describe therapy to maintain a PDA
Prostaglandin (PGE1)
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Describe "Transposition of the Great Vessels"
- Aorta & the Pulmonary Artery are reversed
- Cyanotic heart disease
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Patients with Transposition of the Great Vessels are dependent for their survival on at least 1 other CHD. What other CHDs support this condition?
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Ventricular Septal Defects (VSDs) may have an audible murmur. What information may the murmur reveal?
Murmur amplitude may indicate size (inverse relationship)
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What mechanism reverses the left ⇨ right shunt of a VSD?
Hypoxic Pulmonary Vasoconstriction Response (HPVR)
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Describe treatment of a VSD
- Pre-load reduction
- Diuresis (furosemide [Lasix®] utilized most often @ 0.5 – 1.0 mg/kg)
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Describe Coarctation of the Aorta
- Narrowing of the aortic arch typically just distal of the left subclavian bifurcation, commonly @ aortic hiatus of diaphragm
- Acyanotic Heart Disease
- Decreased aortic flow results in increased LV pressures & ultimately failure
Commonly associated w/VSD
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Describe treatment of Coarctation of the Aorta
- Minimize SVR as able
- Prevent valsalva
- Treat symptoms
- Monitor SpO2 on right hand for accuracy
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What 4 defects make up the Tetrology of Fallot?
- VSD
- PA Stenosis
- RV Hypertrophy
- Rightward displacement of aorta exploited by VSD
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Describe the pathophysiology of Tetrology of Fallot
- Right ⇨ Left shunt
- Cyanotic heart disease
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Describe the treatment of Tetrology of Fallot
- PGE1 for PDA patency management
- “Tet Spell” management
- Knee-chest positioning
- O2: Careful, PDA management
- MSO4
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