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细菌性肝脓肿并发脓毒症的危险因素及列线图构建

郭嘉仪 康海全 王梦娇 席德扬 颜学兵 李春杨

引用本文:
Citation:

细菌性肝脓肿并发脓毒症的危险因素及列线图构建

DOI: 10.12449/JCH250621
基金项目: 

国家科技重大专项 (2018ZX10302206-003-010);

江苏省卫生健康委科研项目 (Z2021009);

江苏省卫生健康委科研项目 (Ym2023110);

江苏省研究生科研与实践创新项目 (KYCX24_3067)

伦理学声明:本研究于2024年6月10日经徐州医科大学附属医院伦理委员会审批,批号:XYFY2024-KL284。
利益冲突声明:本文不存在任何利益冲突。
作者贡献声明:郭嘉仪主要负责课题设计,数据分析,论文写作;康海全、王梦娇、席德扬负责数据收集,论文修改;颜学兵、李春杨负责指导文章写作并最后定稿。
详细信息
    通信作者:

    李春杨, 13775989791@126.com (ORCID: 0009-0006-9200-6208)

Risk factors for pyogenic liver abscess comorbid with sepsis and construction of a nomogram prediction model

Research funding: 

National Science and Technology Key Project (2018ZX10302206-003-010);

Scientific Research Program of Jiangsu Provincial Healthcare Commission (Z2021009);

Scientific Research Program of Jiangsu Provincial Healthcare Commission (Ym2023110);

Jiangsu Postgraduate Research and Practice Innovation Program (KYCX24_3067)

More Information
  • 摘要:   目的  通过分析细菌性肝脓肿(PLA)并发脓毒症的临床特征,探讨PLA并发脓毒症的危险因素,并构建预测模型。  方法  回顾性分析2019年1月—2023年12月于徐州医科大学附属医院住院诊断为PLA的489例患者,根据是否并发脓毒症,分为脓毒症组(n=306)和非脓毒症组(n=183)。收集患者一般资料、实验室检查指标及结局指标。进一步将患者按7∶3的比例随机分为训练集342例和验证集147例,训练集用于筛选变量和构建模型,验证集用于测试模型性能。采用LASSO回归进行变量筛选,并进一步行多因素Logistic回归分析,建立预测模型,绘制列线图。使用校准图、受试者操作特征曲线(ROC曲线)和决策曲线分析对模型进行评估,并进行内部验证。对于符合正态分布的计量资料2组间比较采用成组t检验;非正态分布的计量资料2组间比较采用Mann-Whitney U检验。分类变量采用χ2检验分析组间差异。  结果  脓毒症组和非脓毒症组的脉率、平均动脉压、症状持续时间、合并肝硬化、合并恶性肿瘤、白细胞计数、中性粒细胞计数、淋巴细胞计数、血小板计数(PLT)、活化部分凝血酶原时间、纤维蛋白原、CRP、AST、ALT、Alb、TBil、肌酐、钾、预后营养指数(PNI)差异均有统计学意义(P值均<0.05)。在训练集中,通过LASSO回归分析,筛选出脉率、PLT、TBil、PNI 4个预测因子,进一步多因素Logistic回归分析显示,脉率(OR=1.033,95%CI:1.006~1.061,P=0.018)、PLT(OR=0.981,95%CI:0.975~0.987,P<0.001)、TBil(OR=1.086,95%CI:1.053~1.125,P<0.001)和PNI(OR=0.935,95%CI:0.882~0.988,P=0.019)是PLA患者发生脓毒症风险的独立影响因素,据此构建的模型表现出良好的预测能力,在训练集中模型的ROC曲线下面积为0.948(95%CI:0.923~0.973),在验证集中模型的ROC曲线下面积为0.912(95%CI:0.848~0.976)。决策曲线分析结果显示, 在阈值概率0.3~0.9范围内模型具有较好的净获益。  结论  采用脉率、PLT、TBil、PNI构建的预测模型及列线图,能较好预测PLA发生脓毒症的风险,具有临床价值。

     

  • 图  1  研究设计流程图

    Figure  1.  Study design flowchart

    注: a,LASSO回归系数路径图;b,LASSO回归模型的偏倚-方差权衡图。

    图  2  PLA患者并发脓毒症风险的LASSO回归分析

    Figure  2.  LASSO regression of the risk of sepsis in PLA patients

    图  3  PLA患者发生脓毒症风险的列线图

    Figure  3.  The nomogram of the risk of sepsis in PLA patients

    注: a,训练集;b,验证集。

    图  4  PLA患者发生脓毒症风险的ROC曲线

    Figure  4.  ROC curve of risk of sepsis in PLA patients

    注: a,训练集;b,验证集。

    图  5  PLA患者发生脓毒症风险的校准曲线

    Figure  5.  Calibration curve of risk of sepsis in PLA patients

    图  6  PLA患者发生脓毒症风险的决策曲线

    Figure  6.  Decision curve of risk of sepsis in PLA patients

    表  1  PLA患者的一般资料

    Table  1.   General information on PLA patients

    变量 总计(n=489) 非脓毒症组(n=306) 脓毒症组(n=183) 统计值 P
    男性[例(%)] 320(65.44) 200(65.36) 120(65.57) χ2=0.00 0.962
    年龄(岁) 60.00(52.00~69.00) 59.00(51.25~69.00) 61.00(53.50~69.00) Z=-1.43 0.153
    BMI(kg/m2 24.22(21.88~26.12) 24.22(22.03~26.28) 24.22(21.71~25.94) Z=-0.56 0.576
    脉率(次/min) 86(78~98) 82(76~92) 91(80~105) Z=-4.74 <0.001
    MAP(mmHg) 89.77±12.64 90.73±11.83 88.18±13.77 t=2.08 0.038
    症状持续时间(d) 7(4~15) 10(6~15) 5(3~10) Z=-5.89 <0.001
    临床表现[例(%)]
    发热 405(82.82) 248(81.05) 157(85.79) χ2=1.81 0.178
    腹痛 189(38.65) 119(38.89) 70(38.25) χ2=0.02 0.889
    胃肠道症状 132(26.99) 77(25.16) 55(30.05) χ2=1.39 0.238
    合并症[例(%)]
    糖尿病 180(36.81) 109(35.62) 71(38.80) χ2=0.50 0.481
    高血压 129(26.38) 75(24.51) 54(29.51) χ2=1.47 0.225
    胆道疾病 55(11.25) 33(10.78) 22(12.02) χ2=0.18 0.675
    恶性肿瘤 66(13.50) 34(11.11) 32(17.49) χ2=3.99 0.046
    肝硬化 12(2.45) 3(0.98) 9(4.92) χ2=5.86 0.015
    PLA感染途径[例(%)] χ2=19.22 <0.001
    胆源性 137(28.02) 78(25.49) 59(32.24)
    其他 51(10.43) 20(6.54) 31(16.94)
    隐源性 301(61.55) 208(67.97) 93(50.82)
    治疗方式[例(%)] χ2=1.51 0.471
    单用抗生素 188(38.45) 114(37.25) 74(40.44)
    抗生素+经皮穿刺引流 272(55.62) 176(57.52) 96(52.46)
    抗生素+手术 29(5.93) 16(5.23) 13(7.10)
    下载: 导出CSV

    表  2  PLA患者的实验室资料、影像学表现及临床结局

    Table  2.   Laboratory data, imaging manifestations, and clinical outcomes in patients with PLA

    变量 总计(n=489) 非脓毒症组(n=306) 脓毒症组(n=183) 统计值 P
    实验室结果
    WBC(×109/L) 10.20(7.80~14.30) 9.90(7.20~13.67) 10.90(8.55~15.00) Z=-2.35 0.019
    NEUT(×109/L) 8.69(5.80~12.29) 7.99(5.36~11.35) 9.48(6.92~13.23) Z=-3.56 <0.001
    LYM(×109/L) 1.0(0.6~1.4) 1.2(0.9~1.6) 0.7(0.5~1.1) Z=-9.16 <0.001
    PLT(×109/L) 203.00(102.00~296.00) 261.50(193.25~348.00) 85.00(47.50~128.00) Z=-14.61 <0.001
    CRP(mg/L) 136.20(74.60~200.00) 116.05(65.35~184.30) 155.60(95.00~225.95) Z=-4.68 <0.001
    APTT(s) 28.90(26.50~31.80) 28.25(26.20~31.00) 30.10(27.75~33.30) Z=-5.14 <0.001
    Fib(g/L) 5.48(4.42~6.96) 5.75(4.61~7.19) 5.06(4.05~6.48) Z=-3.66 <0.001
    AST(U/L) 36.0(22.0~72.0) 28.0(20.0~44.0) 63.0(33.5~131.0) Z=-8.77 <0.001
    ALT(U/L) 47.0(26.0~91.0) 38.0(23.0~67.0) 71.0(38.0~138.5) Z=-6.56 <0.001
    Alb(g/L) 31.90±6.43 33.87±5.70 28.59±6.23 t=9.58 <0.001
    TBil(μmol/L) 13.00(8.50~23.10) 11.30(8.00~16.00) 24.40(10.80~43.25) Z=-8.67 <0.001
    Cr(μmol/L) 57.0(47.0~72.0) 55.0(46.0~65.0) 62.0(50.0~89.5) Z=-5.10 <0.001
    K(mmol/L) 3.82±0.58 3.95±0.56 3.61±0.55 t=6.54 <0.001
    PNI 37.35±8.06 40.24±7.35 32.53±6.82 t=11.54 <0.001
    影像学特征[例(%)]
    单发 193(39.47) 120(39.22) 73(39.89) χ2=0.02 0.883
    右侧 336(68.71) 210(68.63) 126(68.85) χ2=0.00 0.959
    环形强化 98(20.04) 66(21.57) 32(17.49) χ2=1.19 0.275
    临床结局[例(%)]
    死亡 19(3.89) 1(0.33) 18(9.84) χ2=27.73 <0.001
    侵袭综合征 16(3.27) 5(1.63) 11(6.01) χ2=6.93 0.008
    急性肾衰竭 11(2.25) 0(0.00) 11(6.01) χ2=16.18 <0.001
    急性肝衰竭 5(1.02) 1(0.33) 4(2.19) χ2=2.29 0.130
    急性呼吸衰竭 28(5.73) 0(0.00) 28(15.30) χ2=49.66 <0.001
    脓毒性休克 24(4.91) 1(0.33) 23(12.57) χ2=36.77 <0.001
    下载: 导出CSV

    表  3  PLA患者发生脓毒症风险的多因素Logistic回归分析

    Table  3.   Multifactorial Logistic regression analysis of the risk of sepsis in patients with PLA

    变量 β SE Z OR(95%CI P
    常数 -1.135 2.241 -0.510 0.321(0.003~24.856) 0.613
    脉率 0.032 0.014 2.370 1.033(1.006~1.061) 0.018
    PLT -0.019 0.003 -7.310 0.981(0.975~0.987) <0.001
    TBil 0.082 0.017 4.870 1.086(1.053~1.125) <0.001
    PNI -0.067 0.029 -2.350 0.935(0.882~0.988) 0.019
    下载: 导出CSV
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