Arrhythmias & electrophysiology
Ventricular arrhythmia detection with a wearable ring-type photoplethysmography sensor: A feasibility study
Authors' conclusion
This study suggests that a ring-type wearable device can detect, with high sensitivity, changes in arterial pulse flow during induced VA.
Study context
- Population
- Patients undergoing a procedure involving VA induction (defibrillation threshold testing, ventricular tachycardia (VT) ablation, electrophysiological study)37 enrolled
- Participants
- 25 patients
- Comparison
- Ring-type wearable PPG sensor (CART-I) vs reference ECG for detecting induced ventricular arrhythmia
- Outcome
- Sensitivity of the ring-type PPG sensor to detect induced VA (loss of cardiac output: flatline or amplitude decrease ≥50%)
Methodological detailsfeasibility study
- Feasibility study
Performance
As reported in the abstract
Sensitivity to detect induced VA
Sensitivity, all VA
94%
Sensitivity, ventricular fibrillation (VF)
100%
Sensitivity, VT
90%
Loss of cardiac output on tachograms: all VF episodes and 36 VT episodes
90%
Further findings
Agreement of PPG- and ECG-derived arrhythmia durations
- Mean difference in VA duration (95% limits of agreement −1.4 to 1.7)
- 0.1 seconds
- Intraclass correlation coefficient
- 0.998 (95% CI 0.997-0.999)
- Excellent agreement
Original publication
Ventricular arrhythmia detection with a wearable ring-type photoplethysmography sensor: A feasibility study. Heart Rhythm. Published 13 June 2025. doi:10.
Composed by AI from the published abstract and checked against it. How Briefs are made →