Huawei Heart Research, led by the PLA General Hospital, presented a study based on photoelectric PPG (Pulsed Pulsed Pulse Wave) technology for screening atrial fibrillation at the ESC annual meeting, which was held in Beijing, China. The study was published online in the Journal of the American Academy of Pediatrics. The study was also published online in the Journal of the American College of Cardiology. (JAmCollCardiol. Online September 2)
In the study, 187,912 people were monitored for at least 14 days with Huawei's smart bracelet, and 262 patients with "suspected atrial fibrillation" were found, with 227 finally diagnosed as having atrial fibrillation, a 91.6% accuracy rate, and 80% of patients at risk for atrial fibrillation stroke were subsequently screened for atrial fibrillation. Patients at high risk for AF stroke received anticoagulation.
Compare that to the Apple Heart Study (an app that uses data from the Apple Watch to identify irregular heart rhythms, including those from potentially serious heart conditions such as atrial fibrillation), which was unveiled this year at the American Heart Association's annual meeting, where 2,161 of 420,000 users (0.5%) were notified of irregular pulses; but in the end, 80% of patients with atrial fibrillation strokes were treated with anticoagulation. irregular pulse notifications; however, only 34% were eventually confirmed to have atrial fibrillation or atrial flutter. The Huawei bracelet is undoubtedly more accurate.
Photoelectric volumetric pulse wave technology is a simple, low-cost, non-invasive means of detecting heart rhythm by sensing changes in capillary blood volume.
When the bracelet is brought on, the bracelet monitors pulse wave rhythms every 10min and collects them for 60 seconds for use in determining heart rhythm. Users can also actively monitor and collect a 45-second signal.
When 10 consecutive measurements show an "irregular rhythm" suspected of AF, the user will be notified that AF is suspected and will be sent to the nearest collaborating hospital in their area for further diagnosis and treatment.
The study also found that this measurement was more effective at screening for AF than a single active measurement, and that monitoring over a 2-week period was more conducive to AF detection.