*HYPOTHYROIDISM

häufig diagnostiziert - aber immer richtig?
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*HYPOTHYROIDISM

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The information on this page is for educational purposes only and should never
be used as a substitute for seeing your own veterinarian, with your pet, for a
complete examination and individually prescribed treatment.

HYPOTHYROIDISM

It is widely recognized that greyhounds normally have a lower thyroid level than other breeds. Any interpretation of seemingly low hormone levels must keep that in mind. There is some debate over how prevalent true hypothyroidism is within the breed and many feel it is over diagnosed. Here's why...

A study by Bloomberg at the University of Florida checked 221 greyhounds - both active racers and retired dogs - and found their normal T4's ranged from .5 - 3.6 with a mean of 1.47. That's about half the normal levels of other breeds and could lead to a normal grey with a T4 of .8 being diagnosed as hypothyroid.

What are the possible signs of a hypothyroid greyhound?

•dry dull brittle coat
•weight gain or weight loss
•exercise intolerance or low stamina
•sensitivity to the cold
•slow healing
•symmetrical hair loss
•"rat tail"
•temperament changes have been reported


How do you test for the problem? A single T4 is NOT accurate to diagnose thyroid disease in a greyhound. In fact, thyroid testing is complicated and sometimes results are ambiguous. The "gold standard" test is the "free T4 by equilibrium dialysis" and the TSH. A diagnosis of thyroid disease must be made based on both clinical signs and supportive testing, AND it must be done in the absence of other diseases to avoid getting a false low result.

Treating a hypothyroid Greyhound is also different than other breeds. If your greyhound is found to be truly low thyroid, the thyroid supplement is given at half the dose recommended for other breeds - greys get .1 mg per 20 pounds. An 80 pound Doberman would receive .8 mg Soloxine every 12 hrs while an 80 pound Greyhound would only receive .4 mg Soloxine every 12 hrs.
http://www.grassmere-animal-hospital.co ... b_work.htm

zur Diskussion gehts hier
http://info-hz.de/greyhound/viewtopic.php?f=206&t=9316
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Nur wer einmal seinen Windhund jagen gesehen hat, der weiß, was er an der Leine hat!
Michaela
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