babybird wrote:
Are you struggling with it mate
Damn straight I'm struggling with it. Measuring scientific medical things and controlling the accuracy was my career for years and I was a dab hand at it, but blood pressure isn't a science, it's a black art. I'm down to using a cheapo meter and couldn't understand why it was giving me such high readings. Then the previous owner casually announced that it's notorious for overestimating.

So I've had to derive a formula to convert its numbers into something like reality.
And you wouldn't believe the palarva - don't do anything strenuous for half an hour, don't eat, drink, watch videos, use a computer, talk, or have scary thoughts, then sit upright and perfectly still for 5 minutes, then hold your arm in just the right position, press the button, and don't be surprised if it's falsely high because the body sometimes feels a sense of shock when the cuff tightens for the first time, so take a couple more readings, but wait a few minutes between them or you might collapse the vein and get false low readings, then calculate the average and hope to Christ it's something like correct.