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 ...

Hyperkalemia causes peaked T waves initially, then an intraventricular conduction delay with a widened QRS complex, then bradycardia. Eventually a “sine wave” pattern ensues. Hyperacute T ...

Ventricular rhythms have a wide QRS complex. The ECG records electrical ... and take over the heart's normal sinus rhythm. It may cause symptoms like light-headedness and fainting, or increase ...