24-hour Holter monitor recordings in 7 pts revealed frequent or infrequent uniform PVCs, infrequent multiform PVCs, uniform ventricular couplets, accelerated ventricular rhythm, and non-sustained ...

Ventricular arrhythmia complexity: couplets with short interectopic interval; NSVT or SVT; short coupling interval (‘R on T’). Ventricular arrhythmia/PVB response to exercise: persistence or increase ...

This ECG example is a rate dependent right bundle and not a ventricular couplet (two PVCs in a row) due to the QRS morphology. Recall that the Brugada criteria describe a ventricular origin to a ...