Using drugs with effects on QT interval

Answer: Determine patient risk factors before prescribing a drug with known potential QT interval effects. Consider ECG monitoring in high-risk patients.

QT interval prolongation is a delay in ventricular repolarisation that may progress to fatal arrhythmias such as torsade de pointes 1-3 and is one of the most common reasons for medicine marketing withdrawal. 4

Be aware of those medicines known to produce QT interval