heart and thyoid

[kriskaydan]

Hi there, I posted a few months back about a problem with an ECG result.  Basically, an ECG back in Dec showed was normal apart from a 'short pr interval'.  I have since had a 24 hr tape and waiting on an event monitor.  24 hr tape showed no abnormality, some supraventricular ectopics(which i never felt), but was told thats normal.  I have had palpitations on and off for years, but usually only related to stress/hormonal times in month, alcohol.  They were a bit more frequent towards end of last year, hence the ECG.

Anyway, cardiologist has seen results, and ruled out any serious causes of short pr interval(I was terrifeid it was WPW at first, but he sees no sign of that).  He is doing investigations to see what could be causing palpitations.

Then 3 weeks ago, after routine bloods at GP, was told my thyroid was low, TSH 28, T4 10.  Ive taken 100mcg thyroxine for 7 years since RAI treatment for graves disease.  Always been stable.  So have upped my dose to 150mcg.

After all that history(sorry!), what Im wondering is could my thyroid have caused ECG changes, short pr interval?  I know that whether Ive been hypothyroid or hyperthyroid in past, I get palpitations, different heart rates... and Ive read that low thyroid can cause problems with hearts conduction system.  My GP thinks is going to send me for another ECG when thyroid levels normal again.

Thanks for any help,

H

[Elli126]

Hi,

Thyroid levels (too high or too low) can definitely cause rythym problems. I am post thyroid CA and had a total thyroidectomy years ago, and had a helluva time until my levels were brought under control. I still have my issues PVCs,PACs,PSVT etc...but they get much worse when my levels are out of whack. I bet you see a merked improvment once your thyroid is back on track.

[MichelleP_3811]

Thyroid issues especially hyperthyrodism can contribute to heart rhythm issues.  I would definitely work to get your levels in balance and see if that helps alleviate your heart palpitations.