Despite paucity of information regarding the proper measurement and monitoring of the QT interval for many QT prolonging drugs, health care practitioners should have basic knowledge of what is ...

Females have a longer QT interval than males and lower heart rates result in a longer QT interval. Due to the heart rates effects, the corrected QT interval (QTc) is frequently used.

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).

Methods: We used standard 12-lead electrocardiograms, K-shell X-ray fluorescence, and graphite furnace atomic absorption spectrometry to measure QT interval, bone lead, and blood lead levels, ...

Was this potentially curative chemotherapy agent erroneously held on the basis of an inaccurate QTc measurement? The QT interval measures the combined duration of ventricular depolarization and ...

Among opioids, methadone appears to carry the highest risk for inducing QT interval prolongation and arrhythmia even at low doses, according to a study published in the journal Medical Principles ...

In pregnancies with normal perfusion, the QTc interval was unaltered, but the QT interval-heart rate hysteresis lag was shorter and the QT interval-heart rate regression residual was higher ...

The previously described sudden deaths may thus have been caused by cardiac-rhythm abnormalities induced by QT-interval lengthening, ventricular tachyarrhythmias, or both.

Of the 12 participating institutions, 4 (2 academic and 2 community institutions) invited us to give a presentation on the QT interval at the same time the survey was conducted.