Azithromycin-induced QT prolongation in elderly patient

Acta Biomed. 2006 Apr;77(1):30-2.


The authors present a case of an elderly patient with idiopathic dilated cardiomyopathy who developed a significative prolongation of the QT interval after two days of treatment with azithromycin for a community-acquired pneumonia. QT prolongation is associated with a high risk of serious ventricular tachyarrhythmias. Three days after discontinuation of azithromycin, QT interval returned to the normal value.

Publication types

  • Case Reports

MeSH terms

  • Aged
  • Anti-Bacterial Agents / adverse effects*
  • Azithromycin / adverse effects*
  • Electrocardiography / drug effects*
  • Heart Ventricles / drug effects*
  • Heart Ventricles / physiopathology*
  • Humans
  • Male
  • Time Factors


  • Anti-Bacterial Agents
  • Azithromycin