肝硬化伴中重度食管胃底静脉曲张患者套扎术后早期再出血危险因素分析及预测模型构建
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淮南市科技计划项目(2021143)


Risk factors analysis and prediction model construction of early rebleeding in patients with cirrhosis and moderate-to-severe esophageal varices after ligation
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    目的 探讨肝硬化伴中重度食管胃底静脉曲张(EGV)患者行内镜下曲张静脉套扎术(EVL)术后早期再出血发生率及相关危险因素,并建立预测模型以评估预测EVL术后早期再出血的效能。方法 选取2019年5月—2023年12月在安徽理工大学第一附属医院(淮南市第一人民医院)消化内镜中心施行EVL的肝硬化伴中重度EGV患者177例的临床资料,筛选符合本研究的患者并将其纳入后续分析,并进行随访6周。根据EVL术后6周内是否发生再出血,将其分为出血组(n=18)及未出血组(n=159),对两组患者的临床资料进行单因素分析,将有意义的指标纳入多因素Logistic回归分析,筛选肝硬化伴中重度EGV患者EVL术后早期再出血的独立影响因素,并运用R软件构建列线图预测模型,通过受试者工作特征(ROC)曲线对列线图预测模型的预测能力予以评估。采用Bootstrap法进行模型内部验证,并计算一致性指数(C-index)来评估模型区分度,绘制校准曲线用以评估模型的校准度。结果 共纳入177例患者,其中18例患者EVL术后6周内再出血(占10.2%);套扎曲张静脉点数(OR=1.405,95%CI:1.087~1.817,P=0.009)、白蛋白(ALB)(OR=0.818,95%CI:0.700~0.957,P=0.012)、活化部分凝血活酶时间(APTT)(OR=1.188,95%CI:1.041~1.356,P=0.01)、Child-Pugh分级(OR=8.119,95%CI:1.205~54.689,P=0.031)是中重度EGV患者EVL术后发生早期再出血独立影响因素。构建的列线图预测模型预测肝硬化伴中重度EGV患者EVL术后发生早期再出血的ROC曲线下面积(AUC)为0.932(95%CI:0.882~0.981);经内部验证,该模型的C-index为0.925;校准曲线显示该模型预测结果与实际结果的一致性良好。结论 套扎曲张静脉点数、ALB、APTT、Child-Pugh分级为EVL术后引发早期再出血的独立影响因素,其中套扎曲张静脉点数、APTT和Child-Pugh分级为危险因素,ALB为保护因素,在临床上应受到充分关注,并且基于本研究构建的列线图模型可以个体化预测肝硬化伴中重度EGV患者EVL术后早期再出血的发生率

    Abstract:

    Objective To investigate the incidence and risk factors of early rebleeding after endoscopic ligation (EVL) in cirrhotic patients with moderate-to-severe esophagogastric varices (EGV), and establish a prediction model to evaluate the efficacy of early rebleeding after EVL. Methods Clinical data of patients who underwent EVL in the Digestive Endoscopy Center of the First Affiliated Hospital of Anhui University of Science and Technology (Huainan First People's Hospital) from May 2019 to December 2023 were selected, and the patients eligible for this study were screened and included in the follow-up analysis, and followed up for 6 weeks. The patients were divided into bleeding group (n=18) and non-bleeding group (n=159) according to whether rebleeding occurred within 6 weeks after ligation. Univariate analysis was performed on the clinical data of the two groups, and meaningful indicators were included in multivariate Logistic regression analysis to filter the independent influencing factors of early rebleeding after cirrhosis with moderate-to-severe esophageal varices ligation. Then R software was used to construct a nomogram prediction model, and the predictive ability of nomogram prediction model was evaluated by receiver operating characteristic (ROC) curve. Bootstrap method was used for internal verification of the model, C-index was calculated to evaluate the model differentiation, and calibration curve was drawn to evaluate the calibration degree of the model. Results A total of 177 patients were included, of which 18 patients had rebleeding within 6 weeks after EVL surgery (10.2%), the number of varicose vein ligation points (OR=1.405, 95%CI: 1.087~1.817, P=0.009), ALB (OR=0.818, 95%CI: 0.700~0.957, P=0.012), and APTT (OR=1.188, 95%CI: 1.041~ 1.356, P=0.01), Child-Pugh classification (OR=8.119, 95%CI: 1.205~54.689, P=0.031) were independent factors affecting early rebleeding after EVL in patients with moderate-to-severe EGV. The area under ROC curve was 0.932 (95%CI: 0.882~0.981)) for early rebleeding after EVL in cirrhotic patients with moderate-to-severe EGV. After internal verification, the C-index of the model was 0.925. The calibration curve showed that the predicted results of the model were in good agreement with the actual results. Conclusion The number of varicose veins ligation, ALB, APTT and Child-Pugh grades are independent factors that cause early rebleeding after EVL. The number of varicose veins ligation, APTT and Child-Pugh grades are risk factors, and ALB is protective factor, which should be paid full attention in clinical practice. Moreover, the nomogram model constructed based on this study can individually predict the incidence of early rebleeding after EVL in cirrhotic patients with moderate-to-severe EGV

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  • 在线发布日期: 2025-11-20
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