Because internists and psychiatrists very frequently prescribe QT prolonging medications, their substantial lack of knowledge of the QT interval poses a significant problem. Respondents who ...

Certain drugs, including hydroxyzine, can cause an irregular heart rhythm called QT prolongation. Taking other drugs that also affect heart rhythm increases this risk. Also known as long QT ...

Consult your healthcare professional before taking or discontinuing any drug or commencing any course of treatment. Serious. These medicines may interact and cause very harmful effects.

Numerous drugs have been well documented to prolong the QT interval as an unwanted side effect.41 The presence of these drugs must be ruled out during the workup for LQTS, and they should be avoided ...

Contributing to its lack of identification is the fact that individuals may or may not show QT prolongation ... or avoidance of specific classes of drugs, or the implantation of a defibrillator.

Risk of QT prolongation: electrolyte disturbances (eg, hypokalemia, hypomagnesemia), underlying cardiac abnormalities, hypothyroidism, familial long QT-syndrome, concomitant drugs known to prolong ...

Monitor BP in children and adolescents initially and during therapy. Increased risk of QT prolongation (eg, family history, cardiovascular disease, elderly, CHF, heart hypertrophy). Avoid in ...

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).

Lower heart rates also result in a longer QT interval. A quick way to distinguish a prolonged QT interval is to examine if the T wave ends beyond the halfway point between the RR interval.