"Physiological vs Right Ventricular Pacing Outcome Trial Evaluated for bradyCardia Treatment" (PROTECT-HF)

Inclusion Criteria

• •We will recruit patients who are referred for clinically indicated pacemaker implantation
• •1\. Adults aged over 18 with left ventricular ejection fraction \>35% and one or more of the following guideline based ventricular pacing indications:
• •1. Permanent or intermittent 3rd degree AV block
• •2. Permanent or intermittent Mobitz type II AV block
• •3. First Degree AV block with a pacing indication
• •4. Slow chronic Atrial Fibrillation or Proposed AV node ablation
• •5. Bifascicular block with a pacing indication
• •6. Trifascicular block with a pacing indication
• •7. Wenckebach with a pacing indication