Croup
Basics
Basics
Basics
Description
Description
- Viral infection of the upper respiratory tract
- Most commonly presents in children 6 mo–3 yr:
- Laryngotracheitis/laryngotracheobronchitis
- Inspiratory stridor owing to extrathoracic airway obstruction
- Expiratory wheeze suggests lower airway involvement
- Inflammatory edema of subglottic region
- Narrowest part of pediatric airway
- May progress to respiratory failure
- Also known as laryngotracheobronchitis
Etiology
Etiology
- Parainfluenza types 1, 2, and 3
- Human coronavirus NL63
- Influenza A and B
- Adenoviruses
- Human coronavirus
- Respiratory syncytial virus (RSV)
- Measles
- Mycoplasma pneumoniae
- Herpes simplex
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