Ritonavir-boosted atazanavir, methadone, and ventricular tachycardia: 2 case reports.

Gallagher, David P; Kieran, Jennifer; Sheehan, Gerard; Lambert, John; Mahon, Niall; Mallon, Patrick W G · Clin Infect Dis · 2008

case_report · Level V

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Abstract

We describe 2 cases of symptomatic ventricular tachycardia associated with prolonged QT interval. Both patients were infected with the human immunodeficiency virus and were receiving treatment with ritonavir-boosted atazanavir and methadone. Discontinuation of atazanavir in both cases resulted in a reduction in the QT interval and cessation of arrhythmia. We concluded that atazanavir contributed to prolonged corrected QT interval and subsequent ventricular tachycardia.

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