In answer to a question in another thread
There is one site that gives exhaustive information. It is regularly updated.
"Here are some quotes. He repeatedly cautions against non-health professional use, then is very helpful!
At least for the foreseeable future, this website is expected to undergo frequent revision and be subjected to further reconstruction. Check back later for updates, possibly additional ECG recorders, and other revisions"
"Note that this technology and availability of personal ECG recorders are new and just now entering the consciousness of mainstream health care. Many physicians and cardiologists themselves are not yet familiar with these devices!
"They are potentially suitable in some emergency situations but only by order of a physician and when used by medical or emergency personnel or for obtaining useful information while waiting for emergency help to arrive. Otherwise, they can be used by the general public (generally in consultation with and approval by a physician) for non-emergency personal recording of information, such as for baseline information, routine monitoring, or during uncommon cardiac events. The recordings can then be shown to the person's cardiologist or electrophysiologist or, for non-emergency or simple monitoring purposes, used by the person himself or herself if he or she is able to interpret them. (See the subsection above for links to learning more about reading ECGs, if interested.)
I bought the Prince 180D from Amazon. Downloaded the latest software from the web. It can be used in three modes: hand/palm, chest, and three leads. The easiest is the Chest. It can be used as a holter. You connect to a computer, upload, and from there I screenprint the results I like, and this is clearer than the official printout.
I find the results clearer than the ECGs done at the doctor, both normal and 12 lead. I am only beginning to learn to read an ECG. I have some baseline clips, printed, which a cardiologist certified as being non-AF. Therefore, after an episode I can confirm that I am no longer in AF. I also have loads of ECGs from years of visits. I found the one that was the clearest, and compare.
Over a 30second recording, I can see if the data is irregular, even when the heart is racing, and this is one feature of AF. I can send clips to my Cardiologist for interpretation, without having the hassle of going to a doctor and persuading them to do an ECG.