Weird heart rate increase during sleep

[FredMom]

I've had my alta hr for 2 months and am now a bit addicted to checking out my sleep and heart rate graphs every day 🙂  Last night there was an oddity that I wonder if others have happen. During sleep my hr is pretty much always in the 60's with slight fluctuations...my resting hr is always between 67-71. But last night, just after falling asleep, the hr graph shows my rate going up from 60's into the 80's and stayed there for over 30 minutes. The other thing I noted is that during that period the detailed hr graph only gave readings every 10 minutes rather than every 5 minutes. After that, back down into 60's for the whole night. I figure the only reason for an increased hr in sleep would be REM/dreaming, but sleep chart showed me in a combination of deep and light sleep during that time, with a few 30 second wake times. Anyone experience this before?

[BjamDuke]

I never went to the doctor, but the excursions have lessened to maybe once a month. I haven't found any reason for them except possibly sleep apnea or just not sleeping well. I don't worry about small excursions, but the ones above 150 bpm are a concern to me. I also seem to wake up 50 times a night. I also have at least 3 or 4 high variations in my Sp02, About 10 years ago I was getting dizzy and nearly passing out a dozen times a day. I failed the Tilt Table test and I had my heart checked out EKG, Carotid ultra sound, stress test & my Cardiologist determined that nothing is wrong with my heart, but my brain fails to speed it up fast enough occasionally. Additionally, I didn't have any dizziness problems, until after I was treated with throat cancer in 2007. I received chemo, radiation, and brachytherapy, and I've been cancer free 13 years. Also, I've noticed a correlation of dizziness with not sleeping well. If I get at least 7.5 hours of sleep, I don't get dizzy. Finally, I've been consistently running around 4 miles 4 times a week, and  I bought a new mattress and I sleep the last few hours in a different bedroom & mattress.. I love the sleep app and the new spo2 function on my Charge 3. I order a spo2 finger monitor so I can see what the actual blood oxygen is. 

[JayLaj]

So Wolf Parkinson’s white plus that a aVNGT thing you were talking about?
Did you ever get sudden palpitations that lasted for like two seconds just
a quick flutter in your chest that felt like your heart skipping a beat?

[BjamDuke]

No palpitations or flutters of the heart for me.

[CCputerguy]

Nope, nothing like that.
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[Nellie_Belle]

Mine has been all over the place since latest version. I wonder if fitbit is liable for BAD data for folks linked to medical charts!

[MichelleCoo]

My symptoms vary. When my heart beats fast I can have all or any
combination of these symptoms: out of breath, pounding heart, weak legs,
dizzy, feeling like I’m about to pass out, and weak legs. There are other
arrhythmia symptoms that I don’t experience. It can be fairly quick or last
for hours. Vegal maneuvers work to stop it most of the time, but not
always. EP has offered beta blockers or ablation but I don’t want either.
He says I’m ok not to do either if I choose. They did a full work up on my
heart to make sure there was not other damage or anything else going on. EP
says I’m good. I have a follow up in May. You can google symptoms of
arrhythmia and as a final note I would suggest getting looked at by a dr.
Some arrhythmia can be deadly. Some must have treatment. Search out a free
clinic if you must. Travel if you must, but get to a dr. Looking at an ekg
or ecg isn’t easy. Arrhythmia differences are subtle and all the different
components are very complex. The ekg machine labeled my arrhythmia as
junctional rhythm, but after taking my history and looking at the ekg th EP
told me it was AVNRT. He pointed out the difference. It’s very minuscule
and there are many different types of arrhythmia. Hope you can get to a
dr.
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[BjamDuke]

Nellie Belle, Is any fitbit data linked to medical charts? I haven't seen that. I thought fitbit had a medical disclaimer.

[Bluekittyx]

Hi Jay!

Can see the person below mentioning Wollf-Parkinson White syndrome, as someone who is more symptomatic than not, what you’re describing is exactly what I get multiple times a week. 
An ECG should pick this up, however my Apple Watch (series 5) ECG feature actually also correctly measured the abnormalities, so it is crazily accurate. Does yours have an ECG feature? If so, do one when this is happening, and give it to your doctor. The delta wave is easy to spot.

[MichelleCoo]

@Bluekittyx. Does your Apple Watch also pick up other Arrhythmias? I know
they do Afib, but I was wondering if the pick up others like SVT besides
WPW.
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[Bluekittyx]

Hey! It doesn’t specifically ‘diagnose’ the possibility in the same way it does with AFib, but it saves your ECG’s to your phone and in my case the delta wave typical with WPW shows clearly on it(you can google WPW pattern ECG). Hope this helps. 

[MichelleCoo]

Thanks.
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[urmo345]

No one can exceed their MAXIMUM heart rate. There is formula to age PREDICTED maximum heart rate which is average and often wrong. Most sport watches allow manually change the maximum heart rate, but first you must find your own by testing. It is obviously much higher than you expected or  watch was wrong!

[FredMom]

I went back to this thread, and wanted to ask a fellow 'sensitive sleeping heart' about Covid vaccines...Have you had them, and did they affect your heart rate while sleeping? I just had my third/booster and was completely shocked to see my normal sleeping HR of 55-66 range was in the 80's most of the night- and then in mid 70's toward morning!! I went back to look at my other doses, and a similar thing happened the night after vaccine 2 (#2 and 3 were Moderna), but not after my first which was Pfizer. Nothing online says this is typical at all...Anyway, curious if you or others noticed such a spike?

[SebWotan]

Yes it is normal and typical.

Your body is active following the jab and start the process to make antibodies and other cells. The immune system responds and this takes energy, that needs to be provided. The heart rate increases to accommodate the needs. Completely normal. You would observe the same if you had a flu or an infection. 

[BjamDuke]

Solved. Not sure if I updated this, but I did finally go to the doctor in 2020, who sent me to a sleep specialist, then I did a home sleep study that show 50 apnea events per hour. Since using a CPAP starting in 2020, I’ve had zero heart beat excursions and very few and small Oxygen Variations. My hourly sleep apnea events are <5.  I believe Fitbit saved my life and I will always be loyal. 

[BjamDuke]

Solved. Not sure if I updated this, but I did finally go to the doctor in 2020, who sent me to a sleep specialist, then I did a home sleep study that show 50 apnea events per hour. Since using a CPAP starting in 2020, I’ve had zero heart beat excursions and very few and small Oxygen Variations. My hourly sleep apnea e curations are <5.  I believe Fitbit saved my life and I will always be loyal.