Despite the randomized trial showing a difference in outcomes, more data are needed before changing practice, says one expert ...

LBBB, and mitral regurgitation. [87] At 18 months of follow-up, bifocal right ventricular pacing significantly shortened the QRS duration, reduced mitral regurgitation, improved hemodynamics and ...

A 76-year-old woman presents with a persistently rapid heart rate that she attributes to her pacemaker. What does the ECG ...

Remember that a left bundle branch block and right bundle branch block, by definition, prolong the QRS duration. A biventricular pacemaker is inserted in the same fashion as a standard pacemaker ...

Remember that a LBBB and RBBB by definition prolong the QRS duration. The indications for biventricular pacing are below: 1. Left ventricular ejection fraction < 35%, a QRS duration of > 120 ms ...