Thresholds

No

by AgentX86 - 2022-10-03 15:58:38

I'm quite sure that your pacemaker is fine. What is happening either you watch is lying to you (most likely) or you have an arrhythmia, like PVCs that is causing the undercount of heartbeats (missing 25% makes this liss likely).

Watches are known to be quite bad at counting heart beats.  I suspect your sleeping position is making this worse. Given the chance that your pacemaker is malfunctioning or your watch isn't counting all heartbeats, there is no question which is the more likely.

Agent is right

by crustyg - 2022-10-04 04:46:00

I've recently purchased a Garmin Swim 2 (for swimming, naturally) and the HR it shows is often way below what is real.  It's *much* easier to get a pulseox HR value from the tip of a finger (early ones covered the whole ear, using the earlobe as the transmission area), so I'm amazed that it manages to find a HR at all (yes, I know, I'm already a zombie).

If you *really* want to know what your HR is (perhaps during exercise) the better smart watches will link to a chest strap (but chest straps don't work for everyone, they are lead-I in traditional 12-lead hospital-style ECGs and the voltages are low for lead-I), but it's much better than a wrist pulseox.  Garmin make a swim version of their chest strap which works during swimming and it's a *lot* better than the watch's own HR data.

Other vendors make similar kit - and I'm not on commission from Garmin, just been using their kit for decades.

Or learn to feel your wrist pulse and simply count your HR - ideally for 30s when it's low.  15s is too short.

Thresholds

by Kidfitz - 2022-10-04 12:48:55

This is good to hear. I got my pacemaker last week and it also has a threshold of 60 and my watch has also shown a low of 47. 

wrist HR

by ourswimmer - 2022-10-04 21:38:43

I find that the HR from my Garmin watch is reasonably accurate, BUT: (1) I cinch it very tight while swimming, which is the only activity I use it for; and (2) I have pretty light skin and not a lot of hair where the watch sensor goes.

I'm not counting on any wearable to tell me or my medical providers whether my pacemaker is working properly, though. That job is for the bedside remote monitor.