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[Amiodarone pulmonary toxicity].

L Mazzei1, B Sposato, A Propati

  • 1I Unità Operativa di Broncopneumologia e Riabilitazione Respiratoria, Azienda Ospedaliera San Camillo-Forlanini, Roma.

Recenti Progressi in Medicina
|February 17, 2000
PubMed
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A 75-year-old female developed amiodarone pulmonary toxicity despite low-dose, intermittent use. Diagnosis requires excluding other causes, and treatment involves drug withdrawal and steroids for rapid improvement.

Area of Science:

  • Pulmonology
  • Cardiology
  • Pharmacology

Background:

  • Amiodarone is a widely used antiarrhythmic drug.
  • Pulmonary toxicity is a known but infrequent adverse effect of amiodarone.
  • Diagnosis of amiodarone-induced lung injury can be challenging.

Observation:

  • A 75-year-old female patient presented with respiratory symptoms after 6 months of low-dose amiodarone therapy (200 mg/daily, 5 days/week).
  • Radiological imaging revealed simultaneous alveolar and interstitial infiltrates.
  • Clinical and diagnostic features were not specific, necessitating exclusion of other potential causes.

Findings:

  • The patient's presentation was consistent with amiodarone pulmonary toxicity.
  • Diagnosis was established by excluding other potential etiologies for the observed pulmonary infiltrates.

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  • Discontinuation of amiodarone and initiation of corticosteroid therapy led to significant clinical and radiological improvement.

    • Implications:

    • This case highlights that amiodarone pulmonary toxicity can occur even with low-dose, intermittent therapy.
    • Early recognition and prompt management, including drug withdrawal and steroid administration, are crucial for favorable outcomes.
    • Physicians should maintain a high index of suspicion for amiodarone-induced lung injury in patients on this medication, especially when pulmonary symptoms arise.