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A comment on Apple Watch detecting coronary ischaemia during chest pain episodes. Parent comment

Re:Apple Watch detecting coronary ischaemia during chest pai... by yosito on Monday May 04, 2020 @04:10AM (#23065619)
I 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?
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Re:Apple Watch detecting coronary ischaemia during chest pai... by LeoPanthera on Monday May 04, 2020 @04:48AM (#23065803)
He 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.
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