A combination of the Q wave, R wave and S wave, the “QRS complex” represents ventricular ... and the QRS duration is widened. A widened QRS duration occurs in the setting of a right bundle ...

Studies investigating QRS-complex abnormalities in association with cocaine use reported widened QRS-complex widths ... investigating cocaine-associated rhythm disturbances. Most of the studies ...

Ventricular tachycardia refers to a wide QRS complex heart rhythm — that is, a QRS duration beyond 120 milliseconds — originating in the ventricles at a rate of greater than 100 beats per minute.

A faster rhythm is known as accelerated idioventricular rhythm. Ventricular rhythms have a wide QRS complex. The ECG records electrical impulses and provides information about the heart rate and ...

Electrocardiographic parameters include first-, second- and third-degree atrioventricular block (AVB); presence of significant Q-waves; QRS complex interval prolongation (including specific ...