Difference between revisions of "Equine Internal Medicine Q&A 21"

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*Serum thyroid hormone concentrations are decreased following concurrent disease and the administration of phenylbutazone (T4 only).  
 
*Serum thyroid hormone concentrations are decreased following concurrent disease and the administration of phenylbutazone (T4 only).  
 
*However, the administration of dexamethasone does not change baseline T3 and T4 concentrations.
 
*However, the administration of dexamethasone does not change baseline T3 and T4 concentrations.
|l3=
+
|l3=Thyroid Gland - Anatomy & Physiology#Influence of External Factors
 
|q4=What is the euthyroid sick syndrome?
 
|q4=What is the euthyroid sick syndrome?
 
|a4=
 
|a4=

Latest revision as of 17:30, 3 September 2011


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You are asked to examine an 18-year-old Warmblood gelding that has developed progressive alopecia, which started in the neck region. Haematological evaluation reveals a haematocrit of 30% (n = 36–42%) and a normal leucocyte count (8.9x109/l with 21% lymphocytes, 1% eosinophils and 78% neutrophils). The total serum protein concentration is normal (81g/l with 31.7% albumin, 14.3% alpha-globulins, 29.4% beta-globulins and 24.6% gamma-globulins). Basal T4 concentration is low.


Question Answer Article
What is the most likely endocrinopathy to cause these lesions? Link to Article
Which three thyroid hormones can you name, and how are they controlled? Link to Article
Does diet influence the plasma concentrations of these hormones? Link to Article
What is the euthyroid sick syndrome? Link to Article


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