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From: Rod on 31 Aug 2008 10:21
We've seen a few posts about these problems. Not sure I understand
enough to make any comment, so I present the abstract from PubMed as is.


=================


Int J Cardiol. 2008 Aug 20. [Epub ahead of print]


Paroxysmal ventricular tachycardia and paroxysmal atrial fibrillation
associated with subclinical hyperthyroidism, chronic renal failure and
elevation of prostate-specific antigen during acute myocardial infarction.

Patanè S, Marte F.

Cardiologia Nuovo Presidio Ospedaliero Cutroni Zodda-Barcellona
P.d.G(Me) AUSL5 Messina, Italy.

Subclinical hyperthyroidism is an increasingly recognized entity that is
defined as a normal serum free thyroxine and free triiodothyronine
levels with a thyroid-stimulating hormone level suppressed below the
normal range and usually undetectable. Paroxysmal atrial fibrillation is
a frequent complication of acute myocardial infarction. It has been
reported that subclinical hyperthyroidism is not associated with
coronary heart disease or mortality from cardiovascular causes but it is
sufficient to induce arrhythmias including an increase in atrial
fibrillation rate. It has also been reported that increased factor X
activity in patients with subclinical hyperthyroidism represents a
potential hypercoagulable state. Moreover chronic renal failure presents
an increased arrhythmic risk. Apparently spurious result has been
reported in a work about mean serum prostate-specific antigen (PSA)
concentration during acute myocardial infarction with mean serum PSA
concentration significantly lower on day 2 than either day 1 or day 3
and it has been reported that these preliminary results could reflect
several factors, such as antiinfarctual treatment, reduced physical
activity or an acute-phase response. We present a case of paroxysmal
ventricular tachycardia and paroxysmal atrial fibrillation associated
with subclinical hyperthyroidism, chronic renal failure and elevation of
serum PSA concentration in a 90-year-old Italian man during acute
myocardial infarction. Also this case focuses attention on the
importance of a correct evaluation of subclinical hyperthyroidism and of
chronic renal failure. Moreover, our report also confirms previous
findings and extends the evaluation of PSA during acute myocardial
infarction.

PMID: 18722027

<http://www.ncbi.nlm.nih.gov/pubmed/18722027>


And while I am at it, here's a couple more:

Paroxysmal atrial fibrillation during acute myocardial infarction
associated with subclinical hyperthyroidism, severe three vessels
coronary artery disease and elevation of prostate-specific antigen after
TURP.

Int J Cardiol. 2008 Aug 6.

<http://www.ncbi.nlm.nih.gov/pubmed/18691781>


Acute myocardial infarction and subclinical hyperthyroidism without
significant coronary stenoses.

Int J Cardiol. 2008 Jun 23

<http://www.ncbi.nlm.nih.gov/pubmed/18579228>
--
Rod

Hypothyroidism is a seriously debilitating condition with an insidious
onset.
Although common it frequently goes undiagnosed.
<www.thyromind.info> <www.thyroiduk.org> <www.altsupportthyroid.org>
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