Smartphone PPG to detect atrial fibrillation
FibriCheck PPG showed ~96% sensitivity and specificity versus cardiologist ECG on analysable traces.
Source
Mobile Phone-Based Use of the Photoplethysmography Technique to Detect Atrial Fibrillation in Primary Care: Diagnostic Accuracy Study of the FibriCheck App
Study at a glance
- Design
- Cross-sectional — Diagnostic accuracy vs 12-lead ECG in primary care
- N
- N=223 · 241 enrolled; 223 analysed after exclusions
- Population
- Primary-care patients screened for atrial fibrillation with FibriCheck PPG
- Outcome
- Sensitivity and specificity of mobile PPG for AF vs 12-lead ECG
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Smartphone PPG to detect atrial fibrillation
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241 participated.
A total of 241 patients participated in the study. The
Final N 223.
Therefore, the final study population comprised 223 subjects. The
What they did
Primary-care patients underwent FibriCheck PPG and 12-lead ECG; accuracy calculated after excluding pacing and poor signals.
What they found
241 enrolled; 223 analysed. Sensitivity 95.6%, specificity 96.6% vs ECG.
The limits
What it doesn't show
Needs adequate signal quality; pacing excluded; PPV/NPV depend on prevalence.
Key terms
- PPG
- Optical pulse sensing via phone.
- FibriCheck
- App classifying AF from PPG.
- Sensitivity
- True AF detection rate.
- Specificity
- True non-AF rule-out rate.
- 12-lead ECG
- Cardiologist reference.
- Atrial fibrillation
- Irregular atrial arrhythmia.
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Sensitivity:
Common questions
Sensitivity?
95.6%.
Specificity?
96.6%.
Final N?
223.
Excluded?
18 paced.
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