Jumpers and kardia

[Sfhmgusa]

Recently I have found it really difficult to get good clear recordings on my single channel Kardia device. I got wild squiggles that I was pretty certain were not my heart but which gave very hard to read traces .

I changed the battery but that made no difference, but then realised I am now wearing more woollen jumpers/ sweaters than usual …and they make static electricity.

A move back to cotton and the problem is gone…

Thought this might help others who got “wild”traces but were not sure why

Steve

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[BobD Volunteer]

Yes artifacts are a common prpblem often cause by being too close to other electronic devices so any emi cna casue problems.

[momist]

Are you sure you meant 'woolly' jumpers? Most these days are some form of plastic, whether fleece, acrylic, polyester or nylon. I now knit my own using pure wool, and have never had that problem. (I know wool will charge a rubber balloon when rubbed over it - did that a lot as a kid!).

[Sfhmgusa in reply to momist]

I was talking about wool, because I don’t really like synthetics next to my skin, but you are absolutely correct synthetics will problem create more static electricity