Summary
Definition
History and exam
Key diagnostic factors
- choking crisis
- unilateral decreased breath sounds
- unilateral wheezing
Risk factors
- decreased level of consciousness (Glasgow coma score <9)
- age <4 years
- age >70 years
- bulbar dysfunction
- male sex
- cerebrovascular disease
- dementia
Diagnostic investigations
Treatment algorithm
Contributors
Authors

Professor of Medicine
Section on Pulmonary, Critical Care, Allergy, and Immunologic Disease
Wake Forest University School of Medicine
Winston-Salem
NC
Disclosures
ABC declares that he has no competing interests. His opinions are his own and do not represent those of his employers: Wake Forest University School of Medicine; US Department of Defense - United States Navy; US Department of Veteran’s Affairs.
Dr Arjun B. Chatterjee would like to gratefully acknowledge Dr Septimiu Murgu and Dr Henri Colt, the previous contributors to this topic. SM and HC declare that they have no competing interests.
Peer reviewers
Consultant Paediatric Anaesthetist
Department of Anaesthesia
Frenchay Hospital
Bristol
UK
Disclosures
AY declares that she has no competing interests.
Director
Interventional Pulmonology
Division of Pulmonary, Allergy, and Critical Care Medicine
Assistant Professor of Medicine
Duke University Medical Center
Durham
NC
Disclosures
MMW declares that he has no competing interests.
Senior Consultant
Department of Respiratory and Critical Care Medicine
Singapore General Hospital
Singapore
Disclosures
PL declares that he has no competing interests.
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