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Treat the Apple Watch as a single lead and you can piecewise together a full ECG. Each of the single-lead ECG recording be off by 30 seconds but is good enough
by atian 6y ago
Treat the Apple Watch as a single lead and you can piecewise together a full ECG. Each of the single-lead ECG recording be off by 30 seconds but is good enough for most purposes.
- johannes_ne 6y agoThe apple watch ECG corresponds to lead I. Lead II and III is right and left arm respectively to left foot, so they will be possible with a bit of flexibility. The 6 precordial leads are not possible, since they are measuring the voltage between an electrode on the chest and the mean of the 3 extremity electrodes.
- yosito 6y agoI have very little understanding of how an ECG works. Can you ELI5 why a single-lead ECG recording can be off by 30 seconds, and what that means?
- LeoPanthera 6y agoHe means that you would have to do many single-lead recordings separately, rather than a multi-lead recording once. The standard length of the Apple Watch ECG recording is 30 seconds.
- sradman 6y agoThe poor man’s single lead ECG is complemented by continuous PPG heart rate data. Being able to combine the data of multiple sensors that are synchronized with a single clock provides new opportunities for monitoring and analysis. HRV data is also useful and I’m surprised that it hasn’t been used to estimate the respiration rate.
- 2dvisio 6y agoQuite unlikely they did not try. Reflectance pulse oximetry is unfortunately affected a lot by ambient light and so, even for the Apple Watch, that might have caused unreliable measures. Using the ECG for RR estimation though should be more than feasible...