Observational StudyDETECTion of PeriOperative Atrial Fibrillation After Noncardiac Surgery

Inclusion Criteria:

1. Had undergone noncardiac surgery within the past 72 hours and requiring, or expected to require, at least one of the following:

• an overnight hospital admission after surgery
• day surgery that would result in a large enough physiological insult to be able to cause POAF. Procedures excluded include those that are conducted using local anesthesia alone, are less than 30 minutes in duration, and/or are judged to be of low physiologic insult by the local investigator.

2. Have one of the following high-risk criteria;

• age 55-64 years, and having either established cardiovascular disease, recent major vascular surgery, a CHA2DS2-VASc score ≥3, or an elevated postoperative troponin level;
• age 65-74 years, and having either established cardiovascular disease, recent major vascular surgery, a CHA2DS2-VASc score ≥2, or an elevated postoperative troponin level; or
• age ≥75 years;

3. Provide written informed consent to participate.

Exclusion Criteria:

1. History of documented chronic (i.e., non-transient) AF before noncardiac surgery;
2. Need for long-term systemic anticoagulation;
3. Ongoing need for long-term dual antiplatelet treatment;
4. Contraindication to oral anticoagulation;
5. Severe renal insufficiency;
6. Severe liver cirrhosis;
7. Acute stroke in the past 14 days;
8. Underwent cardiac surgery in the past 35 days;
9. History of nontraumatic intracranial, intraocular, or spinal bleeding;
10. Hemorrhagic disorder or bleeding diathesis;
11. Known life expectancy <1 year due to concomitant disease;
12. Women who are pregnant, breastfeeding, or of childbearing potential not taking effective contraception;
13. Expected to be non-compliant with follow-up and/or device use;
14. Known contact allergy to monitoring device and/or its peripheral components;
15. Previously enrolled in DETECT-POAF.