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 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 ...

Rotterdam, the Netherlands - An abnormally prolonged heart-rate-corrected QT (QTc) interval, compared with a normal one, more than doubled the long-term risk of sudden cardiac death (SCD), independent ...

The QRS complex is irregular and coarse "fibrillatory waves" are present (see atrial fibrillation review by clicking below) indicating the presence of atrial fibrillation. There is quite a slow ...

Copenhagen, Denmark – 4 April 2022: A simple electrocardiogram (ECG) can pinpoint hospitalised COVID-19 patients at high risk of death who might need intensive management. That’s the finding of a ...

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 ...

The first QRS complex is narrow and supraventricular (*). It is followed by a rapid and irregular rhythm with a rate of up to 300 beats/min. The QRS complexes are unusual and show marked variability ...