heart rate spikes

I am having this issue during activity where it spikes, drops really low, or just drop out all together. I have confirmed its an error in the watch because I wear a garmin on the other wrist and can confirm the apple watch is having problems with the heart rate monitor.

similar issues with data readings spiking with my series 3.

I can be lying flat with a HR around 70bmp, and then get 1, 2, or 3 abnormal readings for no reason at all at over 140bmp, over 170 bmp, or on several occasions gotten 210bmp. No exertion on my part to explain the spikes. I've also had drops down to 39bmp on the same day as the spikes during the day while sitting up!

I have noticed occasional spikes but it appears to be for only a second, then when I manually check my pulse it appears to be normal. I've wondered if on a wake-up does it calibrates the first couple beats before it gives an accurate reading.

I’ve had an Apple Watch 3 cellular version for about 2 months now and I’ve seen two heart rate bursts (about a10 minute event) both times when I was sleeping so I couldn’t do a manual pulse check. I would just get the elevated heart rate notification in the morning. I never woke up and didn’t notice it either. I’ll let my doctor know about it but since it happened only twice over a two month period I’m unable to say whether it actually occurred or was a glitch in the reading.

Same thing here. Bought the series 3 yesterday and have had 2 instances of incorrect spiked HR, both appeared to be when I stood up and each lasting within a single interval (1 minute).

I had HR issues with my Fitbit completely missing beats so have got in the habit of manually checking my pulse (which my doctor says is a much better way to go anyway, though not so easy while working out without stopping). Manually checking confirms the HR on the watch is completely off.

I bought this with the expectation that it will provide reliable HR data so expect Apple to fix this, particularly with their recently announced partnership with Standford Medical regarding the Atrial Fibrillation test...

Same problem here!!!! Randome spikes for less than a minutr and then they come back down. The other night i noticed it was reading between 100-177 during the night so I panicked. Came to realize that i was not ever waering my watch so do knot know what it was reading .

I see what seem to be too high heart rates when I’m dancing for exercise (as “Other Activity”). I wonder if this is a manifestation of a “HR cadence lock” as described in the Heart Rate Accuracy section of this review: https://www.dcrainmaker.com/2017/11/apple-watch-series3-cellular-fitness-sport-r eview.html

Have you had any updates to your issue with the apple watch? I ask because i've been having heart rate spikes while sleeping (without showing the same issues during the day). I have a call into my doctor but trying to see what else others have experienced.

Same thing on me. Around 3 times pero week y get some unusual spikes while sleeping. I was afraid and came to the cardiologist and I will get 24 hrs checked. I was so worried but last coment help me I’m a bit relaxer now. Doctor told me to forget about it and not use clock at night he didn’t give any importance but still I will get that checked

Unfortunately, two studies have found that the Apple watch is the most accurate of this type of heart monitor. The challenge is in getting a device on the skin at the end of your arm to monitor what your heart is doing. I'm assuming what it actually monitors is the pulse of blood traveling through the tiny blood vessels in the skin. It is easy for such devices to be fooled. At the same time, there are cases of episodic tachycardia (rapid heart beat) that do not produce symptoms, so it is important to at least check your own pulse if your watch says there is a problem. This is hard to do if you're asleep, of course. If you're concerned, see your doctor. Paroxysmal supraventricular tachycardia (PSVT): MedlinePlus Medical Encyclopedia

I do believe it’s acurrate at least in mornings. It as the person before me said he had a 24hrs device connected and while Apple Watch said he still had spikes the medical device said he didn’t had at all. I have told this to my cardiologist and ran me tests and said was all fine bust as he saw me that I was still quite unsure we told me he will put me a holder one day long

Stanford is currently signing people on for the Apple Heart Study, which uses Apple Watch data to look for abnormal heart rhythms in a large population. I assume Apple is looking closely at any behavior in the watch that would give false readings. At least, I hope they are. http://med.stanford.edu/appleheartstudy.html

So a follow up from my last post on this subject. I am NOT endorsing anything, but wanted to share something that helped me “catch” the phenomenon. Got an app called FFITV pulse (free). It allowed me to watch my workout live on my IPHONE, my heart rate data real time from my Apple Watch. This way I could watch my heart rate on my phone (I set it on the exercise display in front of me) without having to constantly look at my watch. Since my exercise equipment has heart monitors as well, I had a means to double check when the reading showed a spike. So far I have caught the phenomenon 3 times by watching the monitor on my phone from my watch - and all three times when I grabbed the hand held heart rate monitor on the exercise equipment during the phenomenon/spike, it showed completely normal - no heart rate spike. One spike event lasted 3 minutes on the watch, so I was able to play around with the watch until I got it to stop (by eventually taking it off my wrist, and putting it back on). All events have happened while my arms were in motion (elliptical). If /when I end up figuring out exactly what triggers/fixes it, I will post again.

OK, reading these comments improved my confidence a bit. I actually have A fib issues and recently changed meds. I have felt great up until I bought an Apple watch and started tracking. Once per day, I noticed a spike (highest was 191). The issue was I didn't feel a spike. Let me tell you from experience, you can't feel your heart beat, but you can feel it when it stops (or goes into A fib). I suspected it was a ghost in the machine. I think it would be great if Apple addressed the issue so that folks would not stress out.

After 3 days without spike ( I thought it was due to update) I got at least 10 alarms while sleeping. But today I left the watch with sound so every alarm I woke up and took immodeatly the hearth rate and I was at 55 or 60 in reality. Even I took the watch and put it under my pillow and it still got a hearth rate elevated so maybe my pillow has a ghost on it!!! I don’t know what causes this but sure it’s not a problem in hearth