Summary
Definition
History and exam
Key diagnostic factors
- symptoms increasing with agitation
- distinctive seal-like barky cough
- age 6 months to 6 years
Other diagnostic factors
- male sex
- peak season late autumn (North America)
- prodromal symptoms
- abrupt onset of symptoms
- symptoms worse at night
- hoarse voice
- respiratory distress (sternal/intercostal indrawing, stridor)
- persistent agitation
- lethargy
- asynchronous chest wall and abdominal movement
- fatigue
- signs of hypoxia (pallor or cyanosis)
- signs of hypercapnia (decreased level of consciousness secondary to rising PaCO₂)
Diagnostic investigations
Treatment algorithm
Contributors
Authors
Associate Professor
University of Calgary
Calgary
Canada
Disclosures
CB declares that she has no competing interests. CB is the author of several references in this topic.
Professor
Department of Pediatrics and Physiology and Pharmacology
University of Calgary
Calgary
Canada
Disclosures
DJ declares that he has no competing interests. DJ is the author of several references in this topic.
Peer reviewers
Staff
Department of Pulmonary and Critical Care Medicine
Cleveland Clinic
Cleveland
OH
Disclosures
JC declares that he has no competing interests.
Assistant Professor
Pediatrics and Emergency Medicine
University of Ottawa
Ottawa
Canada
Disclosures
KF declares that he has no competing interests.
Associate Professor
Departments of Paediatrics and Medicine
Children's Hospital of Western Ontario
London
Ontario
Canada
Disclosures
DM declares that she has no competing interests.
Consultant Paediatrician
Children's Hospital and West Wing
John Radcliffe Hospital
Oxford
UK
Disclosures
JH declares that he has no competing interests.
Consultant Respiratory Paediatrician
Department of Respiratory & Sleep Medicine
Royal Hospital for Sick Children
Edinburgh
UK
Disclosures
SC declares that he has no competing interests.
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