QT Interval: Overview
The QT interval measures the time it takes for the heart muscle to contract and relax. A typical QT interval lasts about 4/10th of a second. When the QT interval is extended, the heartbeat is interrupted. Such interruption is called an arrhythmia and can be deadly.
Certain medications, including, but not limited to, Raxar (antibiotic), Avelox (antibiotic), Propulsid (heartburn), Hismanal (allergy), Geodon (emotional), Mellaril (emotional), Trisenox (cancer), Viagra (erectile dysfunction), Droperidol (anesthetic), and Serentil (emotional) have been shown to cause an increase in the QT interval.
-- Article Courtesy of InjuryBoard.com
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