Yes, I am hypothyroid and PSVT. Endo says she has a few "freaks" ( sorry anyone) who are NOT hyperthyroid, but hypo and have the palps and tachycardia. I say it is the conditions are related...never had a heart problem til thryoid problem....
Make sure they test TSH AND Free T4, Free T3, antibodies too.( My TSH is normal range but Free T's all very low, below normal).
Good luck.
I have hypothyroid and I do get pvc's and pac's. I also have a history of a-fib and flutter which I had an ablation done in January 08. I do know that "hyperthyroid" can cause palps. I have been told by both a cardio and endo doctors that hypothyroid usually does not cause palps. But between you and me I think it does.