@davidgerard I was advised that getting different results for different arms was perfectly normal. To see whether you are improving or the reverse always repeat using the same arm and ideally take multiple readings (I always did 3).
My issue is low blood pressure. I have to warn nurses I am not about to die when they take it and I'm 90/60 . Needless to say when I returned a systolic of 60 they correctly told me to get back in bed.

@davidgerard does your cuff say left or right on it, many are handed

@davidgerard that last sentence is very true. Luckily I happen to live in walking distance to the village center so I do small groceries on foot every other day.

@davidgerard I bought one of the cheap wrist-mounted blood pressure meters from Lidl a year or so ago. It worked a few times, then I put it aside, and when I tried again, it started failing with an error code. I ended up picking up a proper cuff-based one (a Beurer, about €40).

@davidgerard these devices are usually built for an arm only, generally the left one. I bought a decent one (I believe), and it recommends the left one, but measurements are similar in the right of you take care to align the "artery" mark on the bracelet with the inner part of the arm roughly where your brachial artery is (involving adjusting the device rather oddly).

@davidgerard i would ask for the drugs. i feel a lot better now Im on them.

@davidgerard
Do you tend to take them in the same order? It could be your blood pressure is settling after the first reading?

@davidgerard Blood pressure measurement is notoriously inaccurate—that's why you're always supposed to take them twice, a couple of minutes apart.

(20 years ago my resting BP was 250/150. I am a walking testimony to continued non-unaliving through consumption of pharmaceuticals!)

@davidgerard do more experimentation, but be sure to mention the mixed results to your doctor. Because it is possible to have different blood pressure in each arm. And the reasons are not good. I cannot remember the specific reasons, but my ex-wife is a nurse practitioner and I remember discussing it with her at some point.

@davidgerard I think the standard measurement procedure is: left arm, while sitting straight, instrument at heart level (either wrist, or upper arm).

@davidgerard The different scoring in each arm IS kind of odd.