Aspiração aguda

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Evidence last reviewed: 11 Feb 2026
Topic last updated: 10 Jun 2025

Summary

Definition

History and exam

Key diagnostic factors

  • presença de fatores de risco
  • tosse intratável
  • febre
  • dispneia
  • sibilância
  • hipóxia
  • estertores
  • rebaixamento do nível de consciência
  • cianose
  • broncoespasmo
Full details

Risk factors

  • disfunção da deglutição
  • doença cerebrovascular
  • nível de consciência comprometido (pontuação < 9 da escala de coma de Glasgow)
  • uso indevido de substâncias
  • durante anestesia geral (ou outros procedimentos orofaríngeos) ou na unidade de terapia intensiva
  • distúrbio gastrointestinal
  • idade avançada
  • tosse fraca
  • doença mais grave
  • estudos com bário do trato gastrointestinal superior
  • sexo masculino
  • presença de uma sonda de alimentação
  • cânceres de cabeça e pescoço
  • politraumatismo
  • doença do refluxo gastroesofágico
  • posição supina
  • obesidade
  • medicamentos que reduzem o tônus dos esfíncteres esofágicos
  • medicamentos que atrasam o esvaziamento gástrico
Full details

Diagnostic tests

1st tests to order

  • radiografia torácica
  • Exames de sangue
Full details

Tests to consider

  • tomografia computadorizada (TC) do tórax
  • broncoscopia
  • gasometria arterial
Full details

Treatment algorithm

ACUTE

pneumonite por aspiração

ONGOING

pneumonite sem resolução após 48 horas

Contributors

Expert advisers

Jonathan Bennett, MD

Honorary Professor of Respiratory Sciences

University of Leicester

Respiratory Consultant

Glenfield Hospital

Leicester

UK

Biography

JB is deputy medical director of RCP Invited Service Reviews, and speaker at national meetings for organisations including the British Thoracic Society, Primary Care Respiratory Society, and Society for Cardiothoracic Surgery.

Disclosures

JB declares that he has no competing interests.

Melvyn Jenkins-Welch, MBBS, BSc, MSc, FRCA, FFICM

Consultant Critical Care Medicine

Cardiff and Vale ULHB

Cardiff

UK

Disclosures

MJW declares that he has no competing interests.

Acknowledgements

BMJ Best Practice would like to gratefully acknowledge the previous expert contributor, whose work has been retained in parts of the content:

Madison Macht, MD

Volunteer Clinical Faculty

Division of Pulmonary Sciences and Critical Care Medicine

University of Colorado Denver

Aurora

CO

Disclosures

MM declares that he has no competing interests.

Peer reviewers

David G. Smithard, BSc, MB, MD, FRCP, FRCSLT (Hon)

Visiting Professor

University of Greenwich

Consultant in Elderly Medicine

Queen Elizabeth Hospital

Lewisham and Greenwich NHS Trust

Greenwich

UK

Disclosures

DGS 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

Marik PE. Aspiration pneumonitis and aspiration pneumonia. N Engl J Med. 2001 Mar 1;344(9):665-71. Abstract

British Thoracic Society. Diagnosis and management of aspiration pneumonia. Mar 2023 [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.
  • Aspiração aguda images
  • Differentials

    • Síndrome do desconforto respiratório agudo
    • Exacerbação da asma
    • Exacerbação da doença pulmonar obstrutiva crônica (DPOC)
    More Differentials
  • Guidelines

    • Diagnosis and management of aspiration pneumonia
    • ACR appropriateness criteria: dysphagia
    More Guidelines
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