A widened QRS duration occurs in the setting of a right bundle branch block, left bundle branch block, non-specific intraventricular conduction delay and during ventricular arrhythmias such as ven ...

Widening of the QRS complex. This usually requires a potassium level of 6.5 or greater and frequently appears as in "intraventricular conduction delay" or IVCD, which is characterized by a widened ...