Aa
svt
I am a 60-some year old male with chronic marginal hypothyroidism and periodic disabling SVT of unknown cause. In these circumstances, is it likely or possible that a hot nodule could be causing the SVT?
Hot nodules often produce excess amounts of thyroid hormone and eventually result in the development of hyperthyroidism.
One of the risk factors for Supraventricular tachycardia is hyperthyroidism.
SVT is rarely life-threatening, however, treatment of a large autonomously hot nodule needs to be considered.
In mild cases the hot nodule may not be producing sufficient amounts of thyroid hormone to suppress TSH production and secretion from the pituitary, thereby the TSH may be normal or towards the lower end of the normal range. As the nodule enlarges, becomes more metabolically active and produces increasing amounts of thyroid hormone, the TSH will become gradually lower, and if hyperthyroidism ensues, the TSH will be suppressed.
Happy Holidays!
One of the risk factors for Supraventricular tachycardia is hyperthyroidism.
SVT is rarely life-threatening, however, treatment of a large autonomously hot nodule needs to be considered.
In mild cases the hot nodule may not be producing sufficient amounts of thyroid hormone to suppress TSH production and secretion from the pituitary, thereby the TSH may be normal or towards the lower end of the normal range. As the nodule enlarges, becomes more metabolically active and produces increasing amounts of thyroid hormone, the TSH will become gradually lower, and if hyperthyroidism ensues, the TSH will be suppressed.
Happy Holidays!
Supra ventricular tachycardia. Sometimes heart can go 140-200+ bpm.
I have it on occasion. Never noticed it, was found on routine Holter for general tachycardia I also hadn't noticed but nurses did when taking routine BP/ pulse.
As for the hypo or hot nodule influence? Please bring it up to your doctor. If you are marginal hypo it may be that you are shifting back from hypo to a working thyroid or even hyper which is also known to happen. There is a heart rhythm specialist on the Ask an Expert section
http://www.medhelp.org/forums/show/91
I was told I was hypo last May with a TSH of 6 (which was the same on a second follow-up test and TPO antibodies were highly positive, US showed extensive lymphocytic changes etc etc) immediately started on levothyroxine 25 mcg (two weeks later "upped" to 75 mcg levoxyl)and started, within the first 2 weeks to get new symptoms. Turns out I have had HYPERthyroidism since last July.
The hyper state may be more typically compatible with what's going on, but a heart expert did say that hypo can at least cause BP to be higher, I don't know about the rate.
I hate the beta blocker side-effects, so if you get any answers please let me know. :-)
I have it on occasion. Never noticed it, was found on routine Holter for general tachycardia I also hadn't noticed but nurses did when taking routine BP/ pulse.
As for the hypo or hot nodule influence? Please bring it up to your doctor. If you are marginal hypo it may be that you are shifting back from hypo to a working thyroid or even hyper which is also known to happen. There is a heart rhythm specialist on the Ask an Expert section
http://www.medhelp.org/forums/show/91
I was told I was hypo last May with a TSH of 6 (which was the same on a second follow-up test and TPO antibodies were highly positive, US showed extensive lymphocytic changes etc etc) immediately started on levothyroxine 25 mcg (two weeks later "upped" to 75 mcg levoxyl)and started, within the first 2 weeks to get new symptoms. Turns out I have had HYPERthyroidism since last July.
The hyper state may be more typically compatible with what's going on, but a heart expert did say that hypo can at least cause BP to be higher, I don't know about the rate.
I hate the beta blocker side-effects, so if you get any answers please let me know. :-)
Supraventricular tachycardia.
It's possible, but there are half a dozen possible triggers. An ultrasound of your thyroid may rule out or help pinpoint the thyroid as the cause.
Alcohol, smoking, lung problems, caffeine, thyroid disease, stress, drug interactions, and hardening of the arteries are all possible contributing factors.
It's possible, but there are half a dozen possible triggers. An ultrasound of your thyroid may rule out or help pinpoint the thyroid as the cause.
Alcohol, smoking, lung problems, caffeine, thyroid disease, stress, drug interactions, and hardening of the arteries are all possible contributing factors.
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