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Pastimes : Heart Attacks, Cancer and strokes. Preventative approaches
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To: Bill who wrote (28997)1/20/2015 5:24:49 PM
From: Stan  Read Replies (1) of 39299
 
Hi Bill. The monitor snaps onto the back of the smartphone like a shell. It has metallic half circles that you place your fingertips onto as you cup your hands around the phone. This lets the phone display face you. There are 3 bars in the upper right-hand corner that go green which lets you know you have the proper hold. At that point, the monitor starts recording. You can watch the progress of the ECG as it goes through the routine. Routines can be set at 30 seconds up to 5 minutes. By default it's set at 30 seconds. After that, you have options to write a note and then save or cancel the recording. There are no limits to the number of recordings you can make with it. You can email it to anyone, print it or send it to AliveCor for an analysis for a small fee. I haven't printed one off yet. Not sure how that works.

The trick seems to be to keep still. Putting your arms on a sturdy surface would be the thing to do. When there is motion of the hands/fingers, I am finding, it creates "artifacts" in the reading. These are unreadable signals not directly from the electrical activity of the heart because the plates you're touching are super-sensitive.

I think it would read any abnormality of the heartbeat as long as it can read the A/V signals clearly.

There is an option for alternate areas of the skin to use such as the belly, as long as the home button of the phone is under the left pectoral. The cardiologist explained that the hands would be fine to use since it's reading the heartbeat through the skin, it's just that 10-12 lead ECG machines get a better reading due to the many contacts from the many areas it's triangulating from. This alternate method seems to be useful for such people as amputees or those with severe rheumatoid arthritis of the hands or paralysis that would make holding it properly impracticable or impossible. I haven't used it like that though.
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