Apple Watch and Kardia recording

[helpmabob]

has anyone have experience of either of these two devices recording A/Fib at a pulse of 46-50. I’ve been advised that neither of them are good at recording A/Fib below 60 beats.

Thanks

[CDreamer]

I have both but as my HR when in AF is upward of 100, I really couldn’t say. I can believe that the iWatch would struggle but I would have thought that the Kardia would cope.

What is your HR in AF?

[helpmabob in reply to CDreamer]

Thanks I’ve messaged Alive Cor direct hopefully they come back soon

[timelucky]

I have used a single lead Kardia for last few years and have more recently got a 6 lead. Neither have had a problem and indeed warn of Bracycardia . I also have a Withings watch which cannot resolve the signal from a pulse of 50 or lower. Hope that helps....

[helpmabob in reply to timelucky]

Thanks

[momist]

Two things: 1. your pulse may be low (46 - 50) but your heart might still be beating quicker, as no or undetectable pulse will be generated if the beat comes before the heart has had a chance to fill. 2. I've never seen any suggestion that a Kardia will function abnormally at low rates, it certainly shows my heart trace reliably at rates down to 44 bpm - admittedly not when I'm in AF as mine goes MUCH faster then.

I can't comment on the Apple watch - it might depend on whether you mean the pulse detection or the ECG trace available from some models. Pulse and ECG are not the same thing.

[helpmabob in reply to momist]

Thanks

[Redactrice]

I use a Kardia without a subscription and it picks up bradycardia in the low 40s. I'm getting frequent 'unclassified' readings as well, three weeks after ablation -- I'm guessing these show ectopics (I can see a double beat on the trace) but haven't confirmed it.

[helpmabob in reply to Redactrice]

Hi I’m sure my bradycardia would be picked up it’s just whether or not any irregular rhythms would Thanks

[beach_bum]

I know my Apple Watch records and alerts me to AFIB, gives me a summary of AFIB every 2 weeks, alerts and calls EHS and your spouse (or whomever you tell it to) if you fall and don’t respond. As far as low HR is concerned, you tell the watch at what low and high BP you want to be alerted to.

Hope this helps.

[OzJames in reply to beach_bum]

Just out of curiosity are you in permanent AF if yr getting readings every 2 weeks? and I saw on yr bio you were originally put on 100mg of metoprolol. Isn’t that very high? They had me on 50mg then 25 then 10mg as it lowered my HR too much. Without drugs I am around 60bpm

[beach_bum in reply to OzJames]

60 bpm is normal resting HR. My Dr. Took me off the metoprolol and put me on a calcium channel blocker, and I’ve been good since, no side effects. I have paroxysmal AFIB, so it’s not all the time. When you ask your watch to monitor for AFIB, it by default gives you a report every 2 weeks…it will say “less that 2%” which means none detected.

[OzJames in reply to beach_bum]

Ahh ok I might try that as I’ve just got it on alert AF which it has in the past but generally I am symptomatic and know before the watch

[helpmabob in reply to OzJames]

Hi I think you’ve read the wrong bio I’ve never been on metoprolol. Thanks

[OzJames in reply to helpmabob]

Yes your right it was one who had replied to you!

[LeeBlack]

I have a Kardia 6L. With low heart rates (mine was 48 with an irregular heart rhythm), it would give a determination of Bradycardia. I'm not sure that it would tell you Afib. You best bet will be to learn to read the ECG graph and make that determination yourself.

[helpmabob in reply to LeeBlack]

Great thanks

[jeff1257]

Apple Watch won’t detect Afib with pulse under 50.

[helpmabob in reply to jeff1257]

Thanks