Heat

[Elli126]

Does anyone else have an issue with heat exacerbating the rhythm problems ?I don't know if it has something to do with my thyroid ( I am very temperature intolerant since my total thyroidectomy) but heat seems to aggravate my rhythm issues.

[Elli126]

That makes perfect sense thank you.

[Artaud]

Honestly, I think blood pressure drops due to dilated vessels in hot weather. I wrote the other day about Baroreceptors, they're tissue that measures the stretching of the vessels in key areas. One article said if your blood pressure rises too much, your heart slows down trying to balance the pressure, conversely, if it drops, your heart speeds up to try to maintain the pressure.

In the past, I've been coming down with a cold, early stages, getting a lot more ectopics than usual. My pulse is generally 60 at rest, but when I'm at rest and the pulse is 74, I get more PVCs. By the doctor's suggestion, at those times I take a little more Beta Blocker to slow the pulse down, almost always reducing the PVCs.

From on online article:
"The body is very sensitive to changes in blood pressure. Special cells in the arteries, called baroreceptors, can sense if blood pressure begins to rise or drop. When the baroreceptors sense a rise or drop in blood pressure, they cause certain responses to occur throughout the body in an attempt to bring the blood pressure back to normal."

[Elli126]

Thanks for your answer I do get affected in general by the heat or extreme cold so I guess that in itself would aggravate my arrhythmias.

[achillea]

It bothers me.  In hot weather, I have problems with faintness and nausea, too.  My cardio says my nervous system just doesn't handle the blood pressure homeostasis thing well, and he's advised me to avoid high temps.

That said, if your ticker has some irritable cells that are causing benign arrhythmias, how reasonable would it be to think that heat-related changes in your blood pressure or electrolytes might provoke more problems with rhythm?