Aa
a-fib TSH or T3?
I am taking 120mg Armour thyroid daily. My recent test results were:
TSH 0.01 (0.50-8.90)
T4 7.3 (4.7-13.3)
FT4 0.72 (0.60-1.61)
T3 84.5 (41-202)
FT3 2.0 (1.8-4.2)
With the TSH suppressed, the FT3 and FT4 are near the bottom 10% of their range. To my mind the TSH, T3, and T4 results are inconsistent. Current doctor says T3 and T4 are in range, TSH is too low and is a problem. He says it will increase the risk of atrial fibrillation. My question is does lack of TSH increase the risk of atrial fibrillation, or is it caused the excess of T3 and or T4?
TSH 0.01 (0.50-8.90)
T4 7.3 (4.7-13.3)
FT4 0.72 (0.60-1.61)
T3 84.5 (41-202)
FT3 2.0 (1.8-4.2)
With the TSH suppressed, the FT3 and FT4 are near the bottom 10% of their range. To my mind the TSH, T3, and T4 results are inconsistent. Current doctor says T3 and T4 are in range, TSH is too low and is a problem. He says it will increase the risk of atrial fibrillation. My question is does lack of TSH increase the risk of atrial fibrillation, or is it caused the excess of T3 and or T4?
MEDICAL PROFESSIONAL
A low TSH (even w/ normal T4 & T3) is associated with a-fib. But it's not the TSH itself that leads to the a-fib, it just reflects the increased risk.
My question is does lack of TSH increase the risk of atrial fibrillation, or is it caused the excess of T3 and or T4?
MEDICAL PROFESSIONAL
The TSH is too low -- the low T4 is normal w/ armour. the T3 level will depend on timing of dose vs timing of lab - so would not read too much into it. The Armour 120mg seems to high for you.
If your TSH is low means med. does is too high. Once the TSH is corrected the FTs might correct more into range.
At this point, evidence if its the med. dose or other thyroid issues as stated by precious poster, that is causing the low FTs, remains.
The heart is very sensitive to the small changes in thyroid hormone levels. The heart is a muscle (I believe its the largest internal muscle and the hardest working muscle ) which contains receptors for thyroid hormone, and heart muscle growth and cardiac function may be influenced by too much or too little thyroid hormone. There is increasing evidence that even small changes in thyroid levels may be associated with measurable changes in how well the heart functions. Although this is controversial, Endocrinologists warn potential adverse effects from dosages of thyroid hormone greater than replacement dosages (med. induced hyperthyroidism) is a well established cause of atrial fibrillation (AF), as well as causing decreased bone density, acute adrenal crisis. Some endocrinologists also still warn that TSH-suppressive dosages of thyroid hormone may cause acute adrenal or Addisonian crisis, leaving a patient in shock and possibly dead. Suppressed level referred as a TSH 0.1 and lower.
When the heart stops beating, it's the end of the road for us. We should strive to take the best care possible of this crucial piece of hardware. We only get issued with one and spares are hard to come by and install successfully.
GL,
Just my personal opinion and experience as a 12 year thyroid patient.
At this point, evidence if its the med. dose or other thyroid issues as stated by precious poster, that is causing the low FTs, remains.
The heart is very sensitive to the small changes in thyroid hormone levels. The heart is a muscle (I believe its the largest internal muscle and the hardest working muscle ) which contains receptors for thyroid hormone, and heart muscle growth and cardiac function may be influenced by too much or too little thyroid hormone. There is increasing evidence that even small changes in thyroid levels may be associated with measurable changes in how well the heart functions. Although this is controversial, Endocrinologists warn potential adverse effects from dosages of thyroid hormone greater than replacement dosages (med. induced hyperthyroidism) is a well established cause of atrial fibrillation (AF), as well as causing decreased bone density, acute adrenal crisis. Some endocrinologists also still warn that TSH-suppressive dosages of thyroid hormone may cause acute adrenal or Addisonian crisis, leaving a patient in shock and possibly dead. Suppressed level referred as a TSH 0.1 and lower.
When the heart stops beating, it's the end of the road for us. We should strive to take the best care possible of this crucial piece of hardware. We only get issued with one and spares are hard to come by and install successfully.
GL,
Just my personal opinion and experience as a 12 year thyroid patient.
Low TSH with low or low-normal T3 and T4 CAN be indicative of pituitary problems, and it can also be indicative of adrenal problems, according to Dr. Bruce Rind. (go to www.google.com (http://www.google.com) and search for his name--his website is VERY informative, but contains commercial information, so I can't link to it here.
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