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Case ReportOpen Access

Atazanavir Induced First Degree Atrioventricular Block and Ventricular Tachycardia: A Case Report

Santimaleeworagun W , Pattharachayakul S , Chusri S , Chayagul P

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Santimaleeworagun W, Pattharachayakul S, Chusri S, Chayagul P. Atazanavir Induced First Degree Atrioventricular Block and Ventricular Tachycardia: A Case Report. J Med Assoc Thai 2013;96:501.

Atazanavir is one highly active antiretroviral therapy for naïve patients or patients with previous regimen failure. However, it seems that the protease inhibitor induces hyperlipidemia. Hyperbillirubinemia is the most common clinical adverse events but reports of cardiotoxicity due to atazanavir are scarce. The authors report a patient who had QT prolongation, first-degree atrioventricularblock, and ventricular tachycardia. After atazanavir/ritonavir discontinuation, this patient got better and had normal electrocardiography. Lopinavir/ritonavir was carefully reintroduced during hospitalization without any adverse drug reaction. Atazanavir induced cardiotoxicity has to be monitored when using protease inhibitors.

Keywords: Atazanavir, first-degree atrioventricular block, ventricular tachycardia

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