外科应激状态下如重度烧伤、择期手术、内毒素感染、出血性休克等常可引起低T_3(Triiodothyroni-ne)综合征。血清T_3浓度的降低常可影响潜在疾病的严重程度和预后。在采用Pringle’s法进行肝手术也可遇到低T_3综合征,因为阻断肝血流很容易造成肝损害和血液动力学改变。本文作者通过实验认为外源 Surgical stress conditions such as severe burns, elective surgery, endotoxin infection, hemorrhagic shock and other often can cause low T_3 (Triiodothyroni-ne) syndrome. Serum T_3 concentrations can often affect the severity of the underlying disease and prognosis. Low-T 3 syndrome can also be encountered when using Pringle’s method for liver surgery, as blocking hepatic blood flow can easily lead to liver damage and hemodynamic changes. The author believes exogenous through experiments