Inappropriate sinus tachycardia?

Posted by amaury @amaury, Nov 24, 2022

In September 2021, I was diagnosed with Premature ventricular contractions (PVCs). My cardiologist indicated this happens to a lot of people and didn’t prescribe any meds. This condition results in what I describe as a heart fluttering sensation. Sometimes several weeks go by without any symptoms. I’m ok with this.

However, lately I’ve had a couple of episodes of very high resting heart rate. I took the following notes:

10 July 2022 @ 10:30pm
Had episode while resting in bed where my bpm went up to 124 for a couple of minutes and then back to my normal resting heartbeats of 68 bpm.

24 Non 2022 @ 7:12am
Woke up with bpm of 139. The bpm was in 120s until about 7:30am. After that it returned to a resting heart beat of 69.

Did some research on the Mayo Clinic website and found the term inappropriate sinus tachycardia which seems to describe the two episodes above.

Can someone confirm this is the right term for these episodes? Can I ignore this or can this be dangerous if not treated?

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hbbird | @hbbird | Nov 25, 2022

I have a fantastic cardiologist who told me it is usually a young people thing. She tried a couple of meds, but neither could I tolerate. She said these Sinus tachycardias sometimes “burn themselves out”. My HR goes up into the 150s. Frequently I can’t even tell. I got an Apple Watch just so I could keep track of it, but decided if my cardiologist is t worried, I wouldn’t worry either. It makes life a lot easier to stop worrying.

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