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Asthma in adults

Última revisión: 11 Dec 2025
Última actualización: 18 Sep 2025

Resumen

Definición

Anamnesis y examen

Principales factores de diagnóstico

  • recent upper respiratory tract infection
  • dyspnea
  • cough
  • expiratory wheezes
  • nasal polyposis
Todos los datos

Factores de riesgo

  • family history
  • gene polymorphisms and epigenetics
  • allergen/irritant exposure
  • occupational exposure
  • air pollution
  • atopic disease history
  • obesity
  • cigarette smoking
  • vaping
  • early life respiratory viral infection and viral wheeze
  • nasal polyposis
  • aspirin and nonsteroidal anti-inflammatory drug (NSAID) use
  • low socioeconomic status
  • gastroesophageal reflux
  • obstructive sleep apnea
  • sex
  • preterm birth
  • polycystic ovary syndrome
  • vitamin D deficiency
Todos los datos

Pruebas diagnósticas

Primeras pruebas diagnósticas para solicitar

  • FEV₁/FVC ratio
  • peak expiratory flow (PEF)
Todos los datos

Pruebas diagnósticas que deben considerarse

  • chest x-ray
  • CBC with differential
  • fractional exhaled nitric oxide (FeNO)
  • bronchial challenge test
  • serum radioallergosorbent test (RAST) immunoassay for allergen-specific IgE
  • skin-prick allergy testing
  • high-resolution CT (HRCT) chest
  • CT sinus
Todos los datos

Pruebas emergentes

  • sputum eosinophil count

Algoritmo de tratamiento

Agudo

initial treatment step 1: asthma symptoms 1-2 days per week or less and no risk factors for exacerbations

initial treatment step 2: asthma symptoms less than 3-5 days per week and normal (or mildly reduced) lung function

initial treatment step 3: asthma symptoms most days (e.g., 4-5 days per week or more), or waking due to asthma once a week or more, low lung function, and risk factors for exacerbations

initial treatment step 4: daily asthma symptoms, waking at night once a week or more, and low lung function

En curso

ongoing treatment step 1: patients using short-acting beta agonist (SABA) alone or with newly diagnosed asthma, with normal (or mildly reduced) lung function

ongoing treatment step 2: asthma not controlled on step 1 treatment

ongoing treatment step 3: asthma not controlled on steps 1-2 treatment (track 1) or step 2 treatment (track 2), with risk factors for exacerbations

ongoing treatment step 4: asthma not controlled on step 3 treatment

ongoing treatment step 5: asthma not controlled on step 4 treatment and patient reviewed by specialist

Colaboradores

Autores

Lauren E. Eggert, MD

Clinical Assistant Professor

Division of Pulmonary, Allergy, and Critical Care Medicine

Department of Medicine

Stanford University School of Medicine

Stanford

CA

Divulgaciones

LEE has participated on advisory boards for Regeneron and AstraZeneca.

Sourav Majumdar, MD

Clinical Assistant Professor (Affiliated)

Division of Pulmonary and Critical Care Medicine

Department of Medicine

Stanford University School of Medicine

Stanford

CA

Divulgaciones

SM declares that he has no competing interests.

Agradecimientos

Dr Lauren E. Eggert and Dr Sourav Majumdar would like to gratefully acknowledge Dr Irwani Ibrahim, Dr Kay Choong See, Dr Francis Thien, and Dr Catherine Weiler, previous contributors to this topic.

Divulgaciones

II, KCS, FT, and CW declare that they have no competing interests.

Revisores por pares

Javed Sheikh, MD

Clinical Director

Division of Allergy and Inflammation

Beth Israel Deaconess Medical Center/Harvard Medical School

Boston

MA

Divulgaciones

JS is a consultant for Aventis, GSK, and Novartis/Genentech; is on the Speakers Bureau for Merck, Aventis, GSK, AstraZeneca, Pfizer, Novartis/Genentech, Inspire, and UCB; has had research sponsored by GSK; is an expert witness at Haemonetics; and has received publication honorarium at Emedicine.

Sheree M.S. Smith, PhD

Research Manager

Imperial College Healthcare Trust

NHLI Airways Division

Imperial College London (Honorary) Respiratory Research

Chest & Allergy

St Mary's Hospital

London

UK

Divulgaciones

SMSS declares that she has no competing interests.

Neil Thomson, MBChB, MD, FRCP

Professor of Respiratory Medicine

Respiratory Medicine Section

Division of Immunology, Infection & Inflammation

University of Glasgow

Glasgow

UK

Divulgaciones

NT declares that he has no competing interests.

Agradecimiento de los revisores por pares

Los temas de BMJ Best Practice se actualizan de forma continua de acuerdo con los desarrollos en la evidencia y en las guías. Los revisores por pares listados aquí han revisado el contenido al menos una vez durante la historia del tema.

Divulgaciones

Las afiliaciones y divulgaciones de los revisores por pares se refieren al momento de la revisión.

Referencias

Nuestros equipos internos de evidencia y editoriales colaboran con colaboradores expertos internacionales y revisores pares para garantizar que brindemos acceso a la información más clínicamente relevante posible.

Artículos principales

National Institutes of Health; National Heart, Lung, and Blood Institute, National Asthma Education and Prevention Program. Expert panel report 3: guidelines for the diagnosis and management of asthma. Aug 2007 [internet publication].Texto completo

Global Initiative for Asthma. 2024 global strategy for asthma management and prevention. May 2024 [internet publication].Texto completo

Parsons JP, Hallstrand TS, Mastronarde JG, et al. An official American Thoracic Society clinical practice guideline: exercise-induced bronchoconstriction. Am J Respir Crit Care Med. 2013 May 1;187(9):1016-27.Texto completo  Resumen

Expert Panel Working Group of the National Heart, Lung, and Blood Institute (NHLBI) administered and coordinated National Asthma Education and Prevention Program Coordinating Committee (NAEPPCC); Cloutier MM, Baptist AP, Blake KV, et al. 2020 focused updates to the asthma management guidelines: a report from the National Asthma Education and Prevention Program Coordinating Committee Expert Panel Working Group. J Allergy Clin Immunol. 2020 Dec;146(6):1217-70.Texto completo  Resumen

Artículos de referencia

Una lista completa de las fuentes a las que se hace referencia en este tema está disponible para los usuarios con acceso a todo BMJ Best Practice.
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