heart rate spikes

You would be unconscious. There is no such thing as a HR of 471. You would be in ventricular fibrillation. It's the watch.

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.

This is also happening quite often for me too. Here are three different nights shown in one picture. Sure hope they can get this figured out. Pretty annoying. Sort of scared me at first but then realized it wasn’t real. I started wearing my Fitbit Blaze on my other arm and it doesn’t detect any heart rate spikes like that.

Mine has spiked to 471 from sitting for an hour, the Dr says the watch is faulty. I was experiencing some sort of internal distress at the time, but it quickly failed. Did you find out anything further on this? Also while it showed on my watch, the data never made it to my phone.

Just went to family doctor for ekg and listen to heart every thing is good. I did the same at the cardiologist and scheduled stress test, echo and Holter monitor in a few weeks so far heart is good. I don’t wear the watch now and I feel so much better.

I just started a work out and wanted to check my heart rate, the watch said 128bpm, I checked manually and it was 70, by the time I looked back down at my watch it was reading 70bpm, I thought it would mess up my numbers for my workout but when I checked it didn’t log it as a spike? I’m hoping they fixed the random brief spikes or drops

How is the testing going? I am having the same thing happen with me and wondering if I should see cardiologist? Random spikes for a few seconds. I do have barycardia so the low alerts are consistent and expected but all a sudden I’m now getting random spikes from 60 to 153 while sitting on the couch! When to the primary care dr and he wants me to wear a heart monitor if it keeps happening. Keep me posted!

I too have been experiencing spikes at random times, often when doing absolutely nothing but sitting watching tv. I immediately checked my blood pressure usping 2 different cuffs and everything was normal . Frustrating since this hasn’t happened with either versions of my watces until recently. I expect better from Appl, especially with the high prices.

I have experienced similar high rate measurements on my watch series 1, every time I start a workout. On a treadmill, I was able to compare values on the watch to the heart rate obtained from the machine itself. For instance, while running and at the point it occurred, the rate shown by the watch was 174, the value reported by the treadmill was 104. Every time the value went up on the watch the machine, those on the treadmill differ wildly. I put into practice all ideas thrown on the subject and this hasn't changed. Last night, while doing a workout, the watch showed measurements of 166 at 6:54 pm, 171 at 7 pm, 161 at 7:02 and 115 after 7:03. It is odd that Apple hasn't sorted out the reason for this disparity on the values. Can I trust these measurements? This situation has been constant for over a year.

I am using an Apple watch Series 4 44mm Nike edition and I get anormal and erratic readings of my heart rate when starting to jog o run at a slow pace... usually it takes 10-15 minutes reading erratic values and then it starts more uniform values ( note : I jog at the same speed all time, so there i no reason for High heart rate values )

I wonder if premature contractions, either PACsor PVCs might cause the misreadings?

I get this same spike. mostly with running. Swimming and cycling seem to be accurate. I know my heart rate isn’t 160-170 when I run or I’d be out of breath.

I've seen the same thing. After wearing the dr issued heart rate monitor for 30 days, were you cleared as healthy or did they find something?