Voriconazole-Induced QT Interval Prolongation: A Prospective Study

The antifungal voriconazole is effective for the treatment of invasive fungal infections in immunocompromised patients. A serious adverse reaction is QT interval prolongation, which may precede life-threatening arrhythmias, such as torsades de pointes. Although ventricular arrhythmias are mentioned as a possible adverse effect of voriconazole, thus far, the incidence and clear recommendations for QT follow-up have not been published. This prospective observational study aimed at describing the incidence of voriconazole induced- QT interval prolongation in the pediatric population and determine the risk factors for this phenomenon.