Dexamethasone generally acceptable when maternal benefit outweighs risk
Epinephrine nebulization minimal systemic exposure but monitor maternal vitals
Geriatric
Geriatric considerations
Adult stridor alternate diagnoses
Tumor
Vocal cord dysfunction
Comorbidity impact
COPD or heart failure may complicate evaluation
Lower threshold for imaging for alternate pathology
Pediatrics
Pediatric specific approach
Peak age group
6 months to 3 years typical
More severe course possible under 6 months
Weight based dosing safety
Dexamethasone mg per kg calculation
Epinephrine nebulized dose caps
Recurrent croup pathway
Consider airway anomaly evaluation
Consider reflux or allergic triggers
Background
Epidemiology
Epidemiology essentials
Typical age distribution
Most common 6 months to 3 years
Uncommon over 6 years
Seasonal pattern
Fall peak common
Winter circulation also common
Viral etiologies
Parainfluenza viruses most common
RSV and influenza possible
Pathophysiology
Pathophysiology core
Subglottic mucosal edema
Narrowest pediatric airway region
Increased resistance with small radius reduction
Dynamic obstruction component
Worsens with agitation and increased airflow demand
Improves with reduced work and calming
Clinical signs linkage
Barking cough from laryngeal inflammation
Inspiratory stridor from upper airway narrowing
Therapeutic Considerations
Treatment rationale
Corticosteroids
Reduce airway edema
Improve symptoms and reduce healthcare utilization
Nebulized epinephrine
Alpha adrenergic vasoconstriction
Rapid onset with short duration
Humidified air
Limited evidence for meaningful benefit
Use only if calming and tolerated
Patient Discharge Instructions
Copy discharge instructions
Home care and expectations
Typical course
Symptoms often worse at night
Gradual improvement over several days
Comfort measures
Keep child calm and upright
Encourage small frequent fluids
Return to ED now
Stridor at rest
Persistent noisy breathing when calm
Worsening after initial improvement
Increased work of breathing
Marked chest retractions
Fast breathing with fatigue
Color or alertness concern
Blue lips or face
Unusual sleepiness or confusion
Drooling or inability to swallow
Suspected epiglottitis or deep neck infection
Do not force throat exam at home
Dehydration concern
Minimal urine output
Refusal of fluids
References
Clinical guidelines and evidence sources
Pediatric croup guidelines and statements
Canadian Paediatric Society position statement acute management of croup in the emergency department
Steroid for all severities recommendation
Nebulized epinephrine for moderate to severe symptoms recommendation
American Academy of Pediatrics and pediatric emergency medicine summaries for croup
Dexamethasone single dose standard of care
Observation after epinephrine due to short duration
Evidence based reviews
Cochrane systematic reviews on glucocorticoids for croup
Symptom score improvement
Reduced hospitalization and return visits
Randomized trials comparing dexamethasone doses
Low dose 0.15 mg per kg efficacy in many cohorts
Common maximum dose 10 mg practice pattern
SymptomDx is an educational tool for medical professionals. It does not replace clinical judgment. Verify all clinical data and drug dosages with authoritative sources.