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KMID : 0356920140670020144
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Korean Journal of Anesthesiology
2014 Volume.67 No. 2 p.144 ~ p.147
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Anesthetic experience in a clinically euthyroid patient with hyperthyroxinemia and suspected impairment of T4 to T3 conversion: a case report
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Lee Sang-Hyun
Kang Jin-Gu
Hahm Moon-Chol
Park Jeong-Heon
Kim Kyung-Mi
Lim Tae-Wan
Kim Young-Ri
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Abstract
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We report an anesthetic experience in a clinically euthyroid patient with hyperthyroxinemia (elevated free thyroxine, fT4 and normal 3, 5, 3’-L-triiodothyronine, T3) and suspected impairment of conversion from T4 to T3. Despite marked hyperthyroxinemia, this patient’s perioperative hemodynamic profile was suspected to be the result of hypothyroidism, in reference to the presence of T4 to T3 conversion disorder. We suspected that pretreatment with antithyroid medication before surgery, surgical stress and anesthesia may have contributed to the decreased T3 level after surgery. She was treated with liothyronine sodium (T3) after surgery which restored her hemodynamic profile to normal. Anesthesiologists may be aware of potential risk and caveats of inducing hypothyroidism in patients with euthyroid hyperthyroxinemia and T4 to T3 conversion impairment.
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KEYWORD
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Anesthesia, Euthyroid, Hyperthyroxinemia, Hyperthyroxinemia due to decreased peripheral conversion of T4
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