The primary efficacy objective of this clinical investigation is to demonstrate that the Ventricular Intrinsic Preference (VIP™) feature allows to reduce the medium- and long-term incidence of unnecessary ventricular pacing in patients with intact AV conduction.

Inclusion Criteria:

• Patient has an indication for implantation of a dual-chamber pacemaker;
• Patient is implanted or scheduled to be implanted with a St Jude Medical Victory pacemaker, or newer device with the same study relevant feature.

Exclusion Criteria:

• Patient has persistent or permanent AF/AFl;
• Patient has permanent AV Block;
• Patient has a pacemaker replacement;
• Patient is in NYHA class IV;
• Patient is unable to attend the follow-up visits;
• Patient is pregnant;
• Patient is less than 18 years of age