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Efficacy of perioperative oral triiodothyronine replacement therapy in patients undergoing off-pump coronary artery bypass grafting

 Yong Seon Choi  ;  Jae Kwang Shim  ;  Jong Wook Song  ;  Young Song  ;  So-Young Yang  ;  Young Lan Kwak 
 Journal of Cardiothoracic and Vascular Anesthesia, Vol.27(6) : 1218-1223, 2013 
Journal Title
 Journal of Cardiothoracic and Vascular Anesthesia 
Issue Date
OBJECTIVE: The aim of this study was to assess the effects of oral triiodothyronine (T3) therapy on postoperative thyroid hormone concentrations, hemodynamic variables, and outcomes. DESIGN: A prospective, randomized, controlled, double-blind study. SETTING: Cardiac operating room at a single institution. PARTICIPANTS: One hundred patients undergoing elective off-pump coronary artery bypass graft surgery. INTERVENTIONS: Patients received either 20 μg of oral T3 or placebo every 12 hours starting 20 minutes before anesthetic induction, for a total of 4 doses. MEASUREMENTS AND MAIN RESULTS: Plasma concentrations of thyroid hormones were measured serially before surgery, upon arrival in the intensive care unit, and 12, 24, and 36 hours after surgery. Hemodynamic variables also were recorded serially. Postoperative inotrope requirement and major morbidity endpoints were assessed. Serum T3 concentrations were significantly higher with fewer patients having T3 concentrations below the normal range in the T3 group than the placebo group throughout the postoperative period. Hemodynamic variables, postoperative inotrope requirement, and outcome variables showed no differences between the groups. CONCLUSIONS: Oral T3 therapy significantly attenuated the postoperative decline in T3 concentrations in patients undergoing off-pump coronary artery bypass graft surgery. The lack of apparent clinical benefit merits further investigations in patients with reduced cardiac performance.
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1. College of Medicine (의과대학) > Dept. of Anesthesiology and Pain Medicine (마취통증의학교실) > 1. Journal Papers
Yonsei Authors
곽영란(Kwak, Young Lan) ORCID logo https://orcid.org/0000-0002-2984-9927
송영(Song, Young) ORCID logo https://orcid.org/0000-0003-4597-387X
송종욱(Song, Jong Wook) ORCID logo https://orcid.org/0000-0001-7518-2070
심재광(Shim, Jae Kwang) ORCID logo https://orcid.org/0000-0001-9093-9692
최용선(Choi, Yong Seon) ORCID logo https://orcid.org/0000-0002-5348-864X
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