Minimizing Ventricular Pacing

Minimizing Right Ventricular Pacing in Dual-chamber Pacemaker Patients With Sinus Node Disease and First Degree Atrioventricular Block.

The aim of this study is to evaluate the effect of minimizing right ventricular pacing in dual-chamber pacemaker patients with sinus node disease (SND) and first degree atrioventricular block (AVIB)on exercise capacity, quality of life and other heart failure measures.

Inclusion Criteria:

• prolonged PQ interval > 200 ms,
• percentage of right ventricular pacing with standard AV delay > 90.

Exclusion Criteria:

• second or third degree atrioventricular block,
• permanent atrial fibrillation.