摘要目的:探讨血清氧化三甲胺(TMAO)水平对脓毒症患者危重程度及近期临床预后的评估价值。方法:采用前瞻性病例对照研究方法，病例组患者收集于2018年3月至2019年12月期间在同济大学附属上海普陀区人民医院急诊重症监护单元住院，符合2016年脓毒症3.0诊断标准的脓毒症患者45例，根据是否存在休克将脓毒症患者分为脓毒症无休克组(33例)与脓毒症休克组(12例)，根据28 d转归分为存活组及死亡组；选取同期健康体检的志愿者作为对照组(30例)。比较各组患者CRP、PCT、IL-6、急性生理学与慢性健康状况评分系统(APACHEⅡ)和序贯脏器衰竭评分(SOFA)及血清TMAO水平。分析TMAO与脓毒症危重程度及近期临床预后的关系。结果:脓毒性休克组IL-6、CRP、PCT、SOFA评分和APACHE Ⅱ评分均明显高于普通脓毒症组( P<0.01)。脓毒症患者死亡组IL-6、PCT、SOFA评分和APACHE Ⅱ评分均明显高于存活组( P<0.01)。脓毒症组第1天血清TMAO水平显著高于健康对照组( P<0.01)。脓毒性休克组第1、3、7天TMAO水平均高于普通脓毒症组，组间比较差异有统计学意义( P<0.01)；两组组内第1、3天TMAO水平比较差异有统计学意义( P<0.01)。死亡组第1、3、7天TMAO水平均高于存活组，组间比较差异有统计学意义( P<0.05)；两组组内第1、3天TMAO水平比较差异有统计学意义( P<0.01)。脓毒症患者血清TMAO水平与APACHEⅡ评分呈正相关( r＝0.848， P<0.01)；TMAO水平与IL-6水平呈正相关( r＝0.956， P<0.01)。 结论:TMAO与脓毒症患者危重程度及近期临床预后密切相关，是脓毒症患者死亡的危险因素。

abstractsObjective:To investigate the value of serum trimethylamine N-oxide (TMAO) level in evaluating the severity and short-term clinical prognosis of patients with sepsis.Methods:A prospective case-control study was conducted. Patients in the case group were admitted to the emergency intensive care unit of Shanghai Putuo District People′s Hospital Affiliated to Tongji University from March 2018 to December 2019. According to the diagnosis criteria of sepsis 3.0 in 2016, the patients in the case group were divided into sepsis non shock group (33 cases) and septic shock group (12 cases). They were divided into survival group and death group according to 28 day outcome; Healthy volunteers were selected as control group (30 cases). The levels of C-reactive protein (CRP), procalcitonin (PCT), interleukin-6 (IL-6), Acute Physiology And Chronic Health Evaluation Ⅱ (APACHE Ⅱ) and the sequential organ failure assessment (SOFA), serum TMAO were compared. The relationship between serum TMAO, sepsis severity and short-term clinical prognosis were analyzed.Results:The serum IL-6, CRP, PCT, scores of SOFA and APACHE Ⅱ in septic shock group were significantly higher than those in normal sepsis group ( P<0.01). The serum IL-6, PCT, scores of SOFA and APACHE Ⅱ in the death group of sepsis patients were significantly higher than those in the survival group ( P<0.01). The serum TMAO level of the sepsis group on 1st day was significantly higher than that of the healthy control group ( P<0.01). The serum TMAO level in the septic shock group on the 1st, 3rd and 7 th day was higher than that in the normal sepsis group, with statistically significant difference ( P<0.01). The serum TMAO level in the septic shock group and normal sepsis group on the third day were significant different with the first day ( P<0.01). The serum TMAO level in the death group on the 1st, 3rd and 7th day was higher than that in the survival group, with statistically significant difference ( P<0.05). And the serum TMAO level in the death group and survival group on the third day were significant different with the first day ( P<0.01). The serum TMAO level of sepsis patients was positively correlated with APACHE Ⅱ score ( r=0.848, P<0.01). The level of TMAO was positively correlated with serum IL-6 ( r=0.956, P<0.01). Conclusions:Serum TMAO is closely related to the severity and recent clinical prognosis of patients with sepsis, and is a risk factor for the death of patients with sepsis.