A prolonged QT interval has a variety of causes and can be a very serious ... on QT interval to learn how this is measured. Multiple medications, electrolyte abnormalities (hypocalcemia ...

Patients may be at a greater risk for developing fatal arrhythmias when taking many of these drugs. In general, antipsychotics cause Q-T interval prolongation at a higher rate than do antidepressants.

Tester DJ and Ackerman MJ (2007) Postmortem long ... QT interval and predisposition to sudden cardiac death. Mutation of one of several genes, most of which encode cardiac ion channels, can cause ...

Prolongation of the Q-Tc interval is a concern for clinicians when prescribing antidepressants and antipsychotics. The risk is minimal in a patient with no apparent risk factors receiving a drug ...

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.

In long QT syndrome, the ion channels are defective, and they cause ... interval and lower the risk of fainting, seizures, and sudden death associated with long QT syndrome. Any of these ...