Physiologic Pacing Registry

1. Scheduled for implantation of an Abbott pacemaker, defibrillator, or CRT-P/D device with any commercially available pacing lead as part of a physiologic pacing procedure according to the clinical site's routine care.

2. At least 18 years of age.

3. Willing and able to comply with the prescribed follow-up tests and schedule of evaluations.

4. Provided written informed consent prior to any registry-related procedures.

1. History of tricuspid valve repair or replacement.

2. Currently participating in another clinical study with an active treatment arm and belong to the active arm

3. Presence of other anatomic or comorbid conditions, or other medical, social, or psychological conditions that, in the investigator's opinion, could limit the subject's ability to participate in the registry or to comply with follow-up requirements, or impact the scientific soundness of the registry results.

4. Chronic physiologic pacing lead implanted

5. Life expectancy of < 6 months.

6. Known contraindication for physiologic pacing therapy/implant (i.e. ongoing infection, known occlusion of the subclavian vein, etc.).