Why the study?
Ibutilide prolongs the QTc interval and increases the risk for ventricular tachycardia, highlighting the dangers of overlooking contraindications.
Highlights the critical importance of adhering to contraindications, patient selection, prophylactic magnesium, and post-administration ECG monitoring to prevent ibutilide-induced Torsade de Pointes.
Ibutilide is recommended by professional society guidelines for the cardioversion of atrial fibrillation and flutter.1,2 Its rapid effect and minimal impact on hemodynamics make it well suited for use in the Emergency Department (ED).3 Ibutilide, however, prolongs the corrected QT (QTc) interval and increases risk for ventricular tachycardia (VT).4–6 The risk of VT can be greatly mitigated by careful selection of low-risk patients, the optimal dose of prophylactic magnesium sulfate, and at least 4 hours of postibutilide electrocardiographic monitoring.3 This case illustrates the dangers of overlooking ibutilide contraindications and provides practical lessons in ibutilide use and management of ibutilide-induced VT.
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Le et al. (2019) studied this question.
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