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           To explore the value of TEG in condition assessment of children with MPP. Methods Two hundred and twelve MPP children
           were recruited from the Affiliated Changzhou No.2 People's Hospital of Nanjing Medical University from July 2019 to July 2021,
           including 52 with severe condition and 160 with non-severe condition. Comparisons were made between two groups in terms of
           demographics,platelet count,routine coagulation parameters,and TEG parameters. The association of TEG parameters with
           platelet count and routine coagulation parameters was assessed. Multivariate Logistic regression analysis was used to explore
           influence factors for the condition of MPP. ROC analysis was used for assess the value of those identified risk factors for predicting
           the condition of MPP. Results Both groups had no significant differences in sex ratio and mean age(P>0.05). Compared with
           children with non-severe condition,those with severe conditionhad shortened reaction time(R) and kinetic time(K),
           and elevated maximum amplitude(MA),α-angle,clotting index(CI),fibrinogen(FIB),prothrombin time(PT),
           international normalized ratio(INR),D-dimer(D-D)(P<0.05). Correlation analysis showed that MA was moderately
           positively associated with PLT and FIB(P<0.001);R was weakly positively associated with activated partial thromboplastin
           time(P<0.001);K was weakly negatively associated with PLT and FIB(P<0.001);α-angle was weakly positively
           correlated with PLT and FIB(P<0.001). Multivariate Logistic regression analysis showed that CI〔OR=5.698,95%CI(3.329,
           9.753),P<0.05〕,and D-D〔OR=5.061,95%CI(1.724,14.859),P<0.05〕were influence associated with MPP,
           and the prediction algorithm based on them for MPP is CI+D-D:Y=1.777CI+1.624D-D-5.264. ROC analysis indicated that the
           area under the ROC curve of CI was 0.885〔95%CI(0.830,0.941)〕with 0.750 sensitivity and 0.907 specificity when the
           cut-off value was determined as 2.05,and that of D-D was 0.716〔95%CI(0.632,0.799)〕with 0.615 sensitivity and 0.784
           specificity when the cut-off value was determined as 0.545,and that of CI in combination with D-D was 0.901〔95%CI(0.850,
           0.952)〕with 0.769 sensitivity and 0.914 specificity when the cut-off value was determined as -0.65. Conclusion TEG could
           partially predict the condition of children with MPP,but could not replace the routine coagulation parameters,and the combined
           predictive value of the two may be higher.
               【Key words】 Pneumonia,mycoplasma;Child;Thromboelastography;Condition assessment;Sensitivity;
           Specificity;Predictive value

               肺炎支原体(MP)是诱发儿童社区获得性肺炎                           他病原体感染;(2)合并先天性心脏病、严重肝脏或
           (CAP)的重要病原体之一,肺炎支原体肺炎(MPP)                          肾脏疾病、川崎病、过敏性紫癜、结缔组织病、先天
           患儿占住院 CAP 患儿的 32.4%~39.5%,且所占比例呈                    性凝血因子异常、肌萎缩、癫痫;(3)采血前 15 d 内
           逐年增高趋势      [1-2] 。重症肺炎支原体肺炎(SMPP)易                 使用抗血小板或抗凝药物者;(4)长期使用激素者;
           诱发肺不张、支气管扩张、肺栓塞、闭塞性细支气管炎                            (5)临床资料不完整者。本研究已获常州市第二人民
           等严重后遗症,还会导致脑炎、心肌炎、噬血细胞综合                            医院豁免知情同意,通过医学伦理委员会批准(伦审号:
           征、血栓形成等多种肺外系统损伤,严重危害患儿健康,                           2021YLJSC017)。
           近年来继发于 MP 感染的血栓形成报道越来越多                    [3] 。    1.2 资料收集 收集患儿入院一般资料及入院后检测
           临床上常规凝血主要检测整个凝血过程中的一个孤立部                            结果。(1)一般资料:包括性别、年龄、诊断报告;(2)
           分,缺乏灵敏度;血栓弹力图(TEG)是一种开始于 20                         入院后检测结果:包括血 小 板 计 数(PLT)、常规凝
           世纪八九十年代的凝血检测方法,能更全面、动态地反                            血参数〔凝 血酶原时间(PT)、国际标准化比值(INR)、
           映凝血、纤溶过程,其样本需求量少、方便快捷,更适                            活化部分凝血活酶时间(APTT)、凝血酶时间(TT)、
           于评估儿童凝血。目前国内外有关 TEG 在 MPP 患儿中                       纤维蛋白原(FIB)、 抗 凝 血 酶Ⅲ(AT- Ⅲ)、D- 二
           应用的相关研究较少,本研究通过探讨 TEG 在 MPP 患                       聚体(D-D)〕、TEG 参数〔反应时间(R)、凝血形
           儿病情评估中的应用价值,旨在为临床 MPP 患儿病情                          成时间(K)、凝固角(α 角)、最大振幅(MA)、
           评估提供新的指标。                                           最大振 幅 后 30 min 纤 溶 指 数(LY30)、凝血综合指
           1 对象与方法                                             数(CI)〕。PLT 及常规凝血指标采用日本希森美康集
           1.1 研究对象 选取 2019 年 7 月至 2021 年 7 月在常                团型号为 CS5100 的分析仪及配套试剂进行测定,TEG
           州市第二人民医院儿科治疗,并符合《诸福棠实用儿科                            指标采用美国 Haemoscope 公司(型号:TEG5000)血
              [4]
           学》 中 MPP 诊断标准的 MPP 患儿 212 例为研究对象。                   栓弹力图仪及配套试剂测定,测定均严格按厂家操作说
           根据患儿病情严重程度将其分为重症 MPP(SMPP)组                         明书进行。
           52 例与非 SMPP 组 160 例。SMPP 组患儿纳入标准:符                  1.3 统计学方法 采用 SPSS 25.0 统计学软件进行统计
           合《儿童社区获得性肺炎诊疗规范(2019 年版)》                    [5]    分析。符合正态分布的计量资料以( ±s)表示,组间
           重症肺炎诊断标准的 MPP 患儿。其余 MPP 患儿纳入非                       比较采用独立样本 t 检验;不符合正态分布的计量资料
           SMPP 组。排除标准:(1)患儿入院 7 d 内发现合并其                      以 M(P 25 ,P 75 )表示,组间比较采用非参数检验;计
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