Effects of illness on thyroid function tests.

Abstract:

:Severe illness of any type predictably leads to abnormal results on thyroid function tests. The first apparent changes are a decrease in total triiodothyronine (T3) and an increase in reverse T3. As disease progresses, a marked decline in thyroxine and an increase in T3 resin uptake are observed. Thyrotropin levels remain normal, confirming that the patient is euthyroid despite marked alterations in thyroid function tests. Supplemental thyroid hormone has never been shown to be of any value, and may indeed be harmful, in euthyroid patients with abnormal thyroid function. Recognition of the euthyroid sick syndrome is vital to avoid needless therapy.

journal_name

Postgrad Med

journal_title

Postgraduate medicine

authors

Felicetta JV

doi

10.1080/00325481.1989.11700751

subject

Has Abstract

pub_date

1989-06-01 00:00:00

pages

213-5, 219-20

issue

8

eissn

0032-5481

issn

1941-9260

journal_volume

85

pub_type

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