The maternal heart significantly adapts to the circulatory needs of pregnancy, but the effect of pregnancy on ventricular repolarization is poorly understood. The aim of this study was to quantify ...

The QT interval is the time from the beginning of the QRS complex (ventricular depolarization) to the end of the T wave (ventricular repolarization). The normal QT interval is controversial and ...

The QT c interval which reflects ventricular activation/repolarization has not been characterized in children during exercise. We studied 60 children (ages 5-18 years) who underwent upright cycle ...

The QT interval on an electrocardiogram signifies the time required for the heart to repolarize after depolarization. It has long been appreciated that a long QT interval predisposes patients to ...

Department of Molecular Pharmacology & Experimental Therapeutics, Mayo Clinic, Rochester, Minnesota, USA Correspondence to Dr M J Ackerman, Long QT Syndrome Clinic and the Mayo Clinic Windland Smith ...

What is the best way to estimate the QT interval on the ECG? What is the equation for QTc? A good way to estimate if the QT interval prolonged is by checking its relation to the R-R interval. If the ...

Boston, MA - Patients who receive high doses of the antidepressants citalopram or escitalopram could potentially develop QT-interval prolongation, a marker of a slight increased risk for ventricular ...

Researchers have discovered a new drug that may be useful in treating a heart rhythm condition called long QT syndrome. Johns Hopkins researchers have discovered a new drug that may be useful in ...

Normally the QT interval is about a third of each heartbeat cycle. In people with LQTS, the QT interval lasts longer than normal. This upsets the careful timing of the heartbeat and may trigger ...