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REVIEWS AND ORIGINAL ARTICLES |
* Servicio de Nefrologia,** Servicio de Endocrinologia,*** Dpto. Laboratorio, C.S.S.S. La Paz, Madrid, Spain
Abnormal thyroid function has been described in chronic renal
insufficiency, and further changes occur with increasing time on hemodialysis.
This study on two groups of patients was done to determine whether treatment
with CAPD induces changes in thyroid function. Group A included 16 patients
with an average duration of treatment of 2.1 ± 1.1 months; group B
included 12 patients with 8.1 ± 2 months. We measured total T4 and T3,
free T4, TBG, RT3U, FTI, T4/T3 and basal TSH, and TSH induced by TRH
stimulation in plasma, and total and free T4 in dialysate. The results showed
a significant decrease in total T4 and T3 in plasma, but no change in free T4
or TSH and no appreciable amounts of the hormones in the dialysate. We believe
the decrease in total T4 and T3 is secondary to alterations in transport
proteins while thyroid function is maintained by normal free T4 and TSH levels
more dependable parameters for the interpretation of thyroid function in
chronic diseases.
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