脓毒症患者甲状腺功能与左心室功能改变相关性研究

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1、 脓毒症患者甲状腺功能与左心室功能改变相关性研究 王斌 郭治国 葛庆岗 郑亚安【摘要】目的 探讨脓毒症患者甲状腺功能紊乱的发生情况及其与左心室结构、功能变化的关系。方法 入选63例脓毒症患者, 入院次日测定血清甲状腺激素和C反应蛋白(CRP)水平,记录患者入院时年龄、性别、疾病、APACHE评分和后期发生休克及多器官功能障碍综合征(MODS)等一般资料,并在入院24 h、第2周、第3周动态观察左心室结构及功能的变化。另选择一般感染组患者(38例)作对照组,比较脓毒症组与对照组甲状腺功能的差别以及早期血清甲状腺激素水平在脓毒症患者不同严重程度的心脏结构及功能改变间的差异性。结果 脓毒症患者血清游

2、离三碘甲状腺原氨酸(FT3)、游离甲状腺( FT4) 水平均明显低于一般感染组(P0,05),其左心室变化表现为:左心室舒张功能减低(型)31例,左心室扩大和左心室舒张功能减低(型)18例,左心室扩大、左心室收缩和舒张功能减低(型)14例;与、型比较,型患者血清FT3、FT4水平显著降低,休克及MODS发生率显著升高而、型患者间上述指标差异均无统计学意义。结论 脓毒症患者普遍存在甲状腺功能紊乱,早期血清甲状腺激素水平对疾病后期左心室结构和功能病变具有一定预测作用。【关键词】脓毒症;左心室;超声心动图;甲状腺激素;C-反应蛋白Relationship between thyRoid hoRmon

3、e level and the change of left ventRiculaR function in septic patients Wang Bin, Guo Zhiguo, Ge Qinggang, Zheng Ya an. EmeRgency DepaRtment, Peking UniveRsity ThiRd Hospital, Beijing 100191, ChinaCoRResponding authoR:Zheng Ya an, Email: z,y,amedmail,com,cn【AbstRact】Objective To investigate the occuR

4、Rence of thyRoid disoRdeRs in septic patients and the Relationship between thyRoid hoRmone level and the change of left ventRiculaR function.Methods A total of 63 septic patients,43 male and 20 female, aged 50 to 88 yeaRs with mean 63,318,5,weRe included in the pResent study. The thyRoid hoRmone lev

5、els and C-Reactive pRotein (CRP) levels weRe detected in all patients on the next day of admission. Clinical infoRmation of each patient was RecoRded including demogRaphics and co-existed disease, APACHE scoRe at admission and the incidence of shock and subsequent multiple oRgan dysfunction syndRome

6、 (MODS). At 24 houRs, the second week and the thiRd week afteR admission, a seRial tRans-thoRacic echocaRdiogRaphy weRe peRfoRmed in all patients to obseRve changes of left ventRiculaR end diastolic dimension, left ventRiculaR eject fRaction and E/A (the Ratio between maximal velocity of blood flow

7、at mitRal valve oRifice in the eaRly diastolic phase and maximal velocity of blood flow of atRium in systolic phase). AnotheR 38 patients with oRdinaRy infections, 21 male and 17 female, with mean age 58,6 16,8 (48-84 yeaRs) weRe selected as contRols foR compaRison. The diffeRence in thyRoid functio

8、n between sepsis gRoup and contRol gRoup was analyzed. The levels of seRum thyRoid hoRmone associated with the incidence of shock and MODS weRe studied among diffeRent types of the left ventRiculaR stRuctuRe and function in sepsis gRoup. Results The levels of seRum fRee tRi-iodothyRonine (FT3) and f

9、Ree tetRa-iodothyRonine (FT4) in sepsis gRoup weRe significantly loweR than those in contRol gRoup (P0,05),but theRe was no diffeRence in level of thyRoid stimulating hoRmone (TSH) between these two gRoups. The patients with sepsis had thRee types of the left ventRiculaR dysfunction: diastolic dysfu

10、nction without the enlaRgement of left ventRiculaR (type) in 31 patients, the enlaRgement of left ventRiculaR with diastolic dysfunction (type ) in 18 patients and the enlaRgement of left ventRiculaR with both systolic and diastolic dysfunction (type ) in 14 patients. CompaRed with the otheR two typ

11、es, the type patients had significantly loweR levels of FT3 and FT4 and higheR incidences of shock and MODS (P0,05). Conclusions Most septic patients have thyRoid function disoRdeR. SeRum thyRoid hoRmone levels in eaRly stage of sepsis have ceRtain Role in pRedicting changes in left ventRiculaR stRu

12、ctuRe and function in the late stage of disease.【Key woRds】Sepsis; Left ventRieulaR;EchocaRdiogRaphy; ThyRoxin; C-Reactive pRotein脓毒症是由感染所致的全身炎症反应综合征,常常累及全身多个器官,造成脓毒性休克、多器官功能障碍综合征(multiple oRgan dysfunction syndRome, MODS)。临床上脓毒症引起的心肌损害并发心功能不全非常常见,是危重患者死亡的重要原因之一1。研究发现,脓毒症患者常合并甲状腺功能异常2-3,而甲状腺功能对心血管系统

13、具有重要的调节作用。本研究探讨脓毒症患者甲状腺功能紊乱情况以及早期甲状腺激素水平与疾病后期左心室功能改变的关系及其对病情的影响。1 资料与方法1,1 临床资料选取2011年1月至2012年3月北京大学第三医院急诊重症监护病房(EICU)及外科重症监护病房(sICU)收治的脓毒症患者共63例,男43例,女20例,年龄5088 岁,平均(63,318,5)岁。原发疾病包括重症肺炎41例,急性坏死性胰腺炎5例,肠穿孔并急性腹膜炎5例,胆管炎4例,肝脓肿3例,感染性心内膜炎2例,脓胸2例,严重创伤并感染1例。入选标准符合国际脓毒症的定义4,并选择与一般感染组患者(38例)作比较。一般感染组患者为存在感

14、染而未发生脓毒症, 男21例,女17例,年龄4884 岁,平均(58,616,8)岁,和脓毒症组在年龄、性别上差异无统计学意义。其中支气管炎17例,化脓性扁桃体炎9例,膀胱炎8例,肠道感染4例。排除标准:(1)既往有心脏病(包括急性或陈旧性心肌梗死、高血压性心脏病、风湿性心脏病、先天性心脏病、心脏瓣膜病、肺源性心脏病及原发性心肌病、代谢性心脏病、心肌炎、感染性心内膜炎、慢性心力衰竭等)史及慢性肾脏疾病、肿瘤、免疫性疾病史;(2)完善血清甲状腺激素检测前近期(一个月内)使用糖皮质激素;(3)原发甲状腺疾病及干扰甲状腺功能药物治疗。1,2 研究方法患者入院24 h内,经胸壁进行超声心动图(UCG)

15、检查,测定左室舒张末内径(left ventRiculaR end-diastolic dimension, LVEDD)、左室射血分数(left ventRiculaR eject fRaction, LVEF)、二尖瓣口舒张期早期最大流速与心房收缩期最大流速的比值(E/A)及心率。用LVEF评价左心室收缩功能,通过改良2D-simpson法测定,LVEF50%为收缩功能减低;用E/A评价左心室舒张功能,E/A1但左房室瓣减速时间(DT)240 ms为舒张功能不全;LVEDD于胸骨左缘左室长轴切面测定,LVEDD55 mm(男)、LVEDD51 mm(女)为扩大,于入院后第二周、第三周复查超声心动图,记录心脏结构及功能变化特点,同时应用急性生理与慢性健康状况评分(acute physiology and chRonic health evaluation, APACHE) 評分系统对脓毒症患者入院24 h内最差临床指标进行评分,并记录患者病程中发生休克、MODS的情况。1,3 甲状腺激素及血清C反应蛋白水平的测定

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