Impact of Catheter Ablation of Ventricular Arrhythmias on Suboptimal Biventricular Pacing in Cardiac Resynchronization Therapy

Universitätsklinikum Köln65 enrolled

Overview

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.

Study Type

OBSERVATIONAL

Enrollment

Conditions

Systolic Heart Failure Ventricular Premature Complexes Ventricular Tachycardia Cardiac Resynchronization Therapy Reduced Biventricular Pacing

Interventions

Eligibility

Sex: ALLMin age: 18 Years

Medical Language ↔ Plain English

Inclusion Criteria: * reduced biventricular pacing \<98% due to ventricular arrhythmia Exclusion Criteria: * reduced biventricular pacing \<98% due to other cause * age \<18 * pregnancy

Outcomes

Primary Outcomes

Percentage of Biventricular pacing

Influence of intervention (Ablation/medical treatment) on previously reduced biventricular pacing percentage (\<98%). Biventricular pacing is measured in percentage of stimulation and is monitored at routine device interrogation.

Time frame: 3 month after intervention biventricular pacing (%) is routinely monitored