Impact of Catheter Ablation of Ventricular Arrhythmias on Suboptimal Biventricular Pacing in Cardiac Resynchronization Therapy
Impact of Catheter Ablation of Ventricular Arrhythmias on Suboptimal Biventricular Pacing in Cardiac Resynchronization Therapy
Cardiac resynchronization therapy reduces mortality in patients with systolic heart failure
 and left bundle branch block. Reduced biventricular pacing can lead to therapy failure. Most
 effective mortality reduction was seen with a BiV pacing above 98%.

 Reduced BiV pacing is a common phenomenon with potential impact on CRT-response and pts'
 prognosis. Frequent ventricular ectopy may be associated with attenuated benefit from CRT.
 The investigators sought to systematically assess the effect of ventricular arrhythmia
 treatment on BiV pacing.
Inclusion Criteria:

 -  reduced biventricular pacing <98% due to ventricular arrhythmia

 Exclusion Criteria:

 -  reduced biventricular pacing <98% due to other cause

 -  age <18

 -  pregnancy