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Crupe

Last reviewed: 20 Aug 2025
Last updated: 28 Apr 2023

Summary

Definition

History and exam

Key diagnostic factors

  • sintomas que aumentam com agitação
  • tosse ladrante tipo "latido de foca" distinta
  • 6 meses a 6 anos de idade
Full details

Other diagnostic factors

  • sexo masculino
  • intensidade máxima no final do outono
  • sintomas prodrômicos
  • início abrupto dos sintomas
  • os sintomas pioram à noite
  • rouquidão
  • dificuldade respiratória (retração esternal/intercostal, estridor)
  • agitação persistente
  • letargia
  • movimento assíncrono da parede torácica e abdominal
  • fadiga
  • sinais de hipóxia (palidez ou cianose)
  • sinais de hipercapnia (diminuição do nível de consciência em decorrência do aumento de PaCO₂)
Full details

Risk factors

  • 6 meses a 6 anos de idade
  • sexo masculino
  • intubação prévia
Full details

Diagnostic tests

1st tests to order

  • exame clínico
Full details

Tests to consider

  • radiografia anteroposterior e lateral do pescoço
Full details

Treatment algorithm

ACUTE

leve (sem estridor em repouso)

moderado (estridor em repouso; sem agitação ou letargia)

grave (estridor em repouso com agitação ou letargia)

Contributors

Authors

Candice Bjornson, MSc, MD, FRCPC

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.

David Johnson, MD

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

Ken Farion, MD

Assistant Professor

Pediatrics and Emergency Medicine

University of Ottawa

Ottawa

Canada

Divulgaciones

KF declares that he has no competing interests.

Doreen Matsui, MD, FRCPC

Associate Professor

Departments of Paediatrics and Medicine

Children's Hospital of Western Ontario

London

Ontario

Canada

Divulgaciones

DM declares that she has no competing interests.

Jeremy Hull, MBBS

Consultant Paediatrician

Children's Hospital and West Wing

John Radcliffe Hospital

Oxford

UK

Divulgaciones

JH declares that he has no competing interests.

Steve Cunningham, MBBS, PhD

Consultant Respiratory Paediatrician

Department of Respiratory & Sleep Medicine

Royal Hospital for Sick Children

Edinburgh

UK

Divulgaciones

SC declares that he has no competing interests.

Donna J. Lee, MD

Pediatric Pulmonology

Joseph M. Sanzari Children's Hospital,

Hackensack Meridian Health

Hackensack

NJ

Divulgaciones

DL declares that he has no competing interests.

Deepak Mehta, MD, FRCS ( Oto)

Professor of Otolaryngology

Director Pediatric Aerodigestive Center,

Baylor College of Medicine,

Texas Children’s Hospital,

Houston

TX

Divulgaciones

DM declares that he has no competing interests.

Peer reviewer acknowledgements

BMJ Best Practice topics are updated on a rolling basis in line with developments in evidence and guidance. The peer reviewers listed here have reviewed the content at least once during the history of the topic.

Disclosures

Peer reviewer affiliations and disclosures pertain to the time of the review.

References

Our in-house evidence and editorial teams collaborate with international expert contributors and peer reviewers to ensure that we provide access to the most clinically relevant information possible.

Key articles

Johnson D, Klassen T, Kellner J. Diagnosis and management of croup: Alberta Medical Association clinical practice guidelines. Alberta: Alberta Medical Association; 2015 [internet publication].Full text

Reference articles

A full list of sources referenced in this topic is available to users with access to all of BMJ Best Practice.
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