Abstract
Background
Guidelines recommend opportunistic screening for atrial fibrillation (AF) in high-risk populations, including chronic obstructive pulmonary disease (COPD) patients.
Purpose
We aimed to assess the feasibility and yield of a photoplethysmography (PPG) smartphone app-based pathway for AF detection within a COPD outpatient clinic.
Methods
Ninety-nine eligible patients from the COPD outpatient clinic at the Maastricht University Medical Center+ underwent a 14-days PPG app-based AF screening. PPG-based AF detection triggered an electrocardiogram (ECG) for AF diagnosis and initiation of a comprehensive AF management. Patients’ adherence and system usability were assessed.
Results
Patient onboarding was easy, and patients demonstrated good adherence to the protocol (101% [82%-123%]). The usability of the PPG app was satisfactory with a high score in the System Usability Score questionnaire (80.0 [55.0-92.5]). Among 99 patients (mean age 66±9 years; 54% female), 8% had a prior AF diagnosis. Premature beats were common, with 96% of patients showing isolated premature beats (<6 in 960 PPG recordings) and 32% frequent premature beats (≥6 in 210 PPG recordings). The PPG algorithm suspected paroxysmal AF in 6 new cases. AF could be confirmed in 2 patients through resting 12-lead ECG and 1-lead handheld ECG device. One patient who was lost to follow-up. In the remaining 3 patients with suspected AF PPG recordings, analysis of 24-hour, 48-hour and 7-day Holter recordings revealed high burden premature (supra)ventricular beats. Two of these patients manifested self-terminating short episodes of supraventricular tachycardia.
Conclusion
14-days opportunistic PPG app-based screening is feasible in COPD outpatient care and results in the detection of new AF cases and premature beats. This novel digital approach offers a practical method to implement recommended AF screening in COPD patients.
