Peds Flashcards
When does renal tubular function equal that of an adult?
Renal tubular function achieves full concentrating ability at ~2 years old
What three kidney values are lower in neonates than adults?
GFR
Renal perfusion pressure
Diluting/concentrating ability
When does GFR improve to adult levels in the neonate?
GFR improves in the first few weeks of life, but isn’t fully mature until 8-24 months of life
Describe cyanotic shunt HD goals:
Maintain SVR
Decrease PVR
Increase preload
Maintain HR and contractility
Describe cyanotic shunt hd goals:
Avoid increased SVR
Avoid decreased PVR
Right to left shunt examples:
Tetralogy of Fallot
Truncus arteriosus
Transposition of the great vessels
Tricuspid displacement (Ebstein’s anomaly)
Epiglottitis vs Laryngotracheobronchitis: Organism
Bacterial vs viral
Epiglottis vs Laryngotracheobronchitis: Age
2-6 yrs vs < 2 yrs
Epiglottis vs Laryngotracheobronchitis: Onset
Rapid (<24 hours) vs Gradual (24-72 hours)
Epiglottis vs Laryngotracheobronchitis: Region affected
Supraglottic: epiglottis, vallecula, arytenoids, aryepiglottic folds
Laryngeal structures below vocal folds
Epiglottis vs Laryngotracheobronchitis: Neck X-ray
Swollen epiglottis (Thumb sign) with lateral X-ray
Subglottic narrowing (Steeple sign) with frontal X-ray
Epiglottis vs Laryngotracheobronchitis: Clinical Presentation
High grade fever
Tripod assisted breathing
4 D’s: drooling, dyspnea, dysphagia, dysphonia
Low-grade fever
Barking cough
Vocal hoarseness
Inspiratory stridor
Retractions (suprasternal, substernal, intercostal)
Epiglottis vs Laryngotracheobronchitis: Treatment
Oxygen
Urgent airway management: tracheal intubation or tracheostomy
Abx if bacterial
Induction with spontaneous respirations (CPAP 10-15 cmH2O to prevent airway collapse)
ENT MUST BE PRESENT
Oxygen
Racemic epinephrine
Corticosteroids
Humidification
Fluids
Intubation rarely required
Racemic epinephrine dosing
0-20 kg = 0.25 mL of 2.25% racemic epi in 2.5 mL of NS
20-40 kg = 0.5 mL of 2.25% racemic epi in 2..5 mL of NS
> 40 kg = 0.75 mL of 2.25% racemic epi in 2.5 mL of NS
Treatment for postintubation croup:
Racemic epi
Cool and humidified O2
Dexamethasone 0.25-0.5 mg/kg IV (max effect 4-6 hours)
Heliox - increased laminar flow
Is not infectious so abx not indicated
Airway risks in peds with URI:
increased airway reactivity (bronchospasm)
laryngospasm
mucous plugging in airway
atelectasis
desaturation events
postoperative hypoxemia
When to postpone elective surgery due to URI:
purulent nasal drainage
fever >38C or 100.4F
lethargic
persistent cough
poor appetite
wheezing and rales that don’t clear with cough
child <1 year or previous premie
When to proceed with elective surgery despite URI:
clear rhinorrhea
no fever
active
appears happy
clear lungs
older child
How long should you wait to anesthetize a child after URI?
2-4 post onset of symptoms
but
pulmonary complications can persist for up to 6-8 weeks
What medication can help prevent post-intubation croup?
Dexamethasone 0.25 - 0.5 mg/kg IV
Foreign body aspiration classic triad:
cough
wheezing
decreased breath sounds on affected side (usually the right)