For the 10 questions on medications that can prolong the QT interval, the median number of correct answers for internists was 5 (interquartile range 3-7), for psychiatrists 5 (interquartile range ...

Quinidine, disopyramide, procainamide, sotalol, dofetilide, ibutilide and amiodarone can potentially prolong the QT interval. The antiarrhythmic drugs that do not prolong the QT interval include ...

A prolonged QT interval has a variety of causes and can be a very serious ECG finding, as it may lead to the potentially fatal arrhythmia polymorphic ventricular tachycardia (Torsades de Pointes).

Possible neurotoxicity with lithium: monitor, discontinue if occurs. Caution with drugs that prolong the QT interval (eg, Class 1A [eg, procainamide, quinidine, disopyramide] or Class 3 ...

Class IA (disopyramide, quinidine, procainamide) or Class III (dofetilide, amiodarone, sotalol) antiarrhythmics, or other drugs known to prolong QT interval: not recommended. Sildenafil ...

In this survey of health care practitioners' knowledge of the QT interval, we found that an appreciable number of health care practitioners cannot correctly measure the QT interval and cannot ...