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陆军军医大学(第三军医大学)第一附属医院麻醉科,重庆
鲁开智,E-mail:lukaizhi2010@163.com;
邵建良,E-mail:654708721@qq.com
收稿日期:2025-07-15,
修回日期:2025-08-01,
纸质出版日期:2025-08-30
移动端阅览
周辅超,刘祥,鲁开智,等.心血管手术患者术后呼吸衰竭的危险因素及预测模型构建[J].陆军军医大学学报,2025,47(16):1970-1980.DOI:10.16016/j.2097-0927.202507047.
ZHOU F C,LIU X,LU K Z,et al.Risk factors for postoperative respiratory failure in patients undergoing cardiovascular surgery and construction of a prediction model[J].J Army Med Univ,2025,47(16):1970-1980.DOI:10.16016/j.2097-0927.202507047.
周辅超,刘祥,鲁开智,等.心血管手术患者术后呼吸衰竭的危险因素及预测模型构建[J].陆军军医大学学报,2025,47(16):1970-1980.DOI:10.16016/j.2097-0927.202507047. DOI:
ZHOU F C,LIU X,LU K Z,et al.Risk factors for postoperative respiratory failure in patients undergoing cardiovascular surgery and construction of a prediction model[J].J Army Med Univ,2025,47(16):1970-1980.DOI:10.16016/j.2097-0927.202507047. DOI:
目的
2
基于机器学习算法识别心血管手术患者术后呼吸衰竭(postoperative respiratory failure, PORF)的危险因素,并构建特异性的风险预测模型。
方法
2
回顾性的纳入INSPIRE数据库2011到2020年间行心血管手术的1 623例患者,进行数据质量分析后,使用多重插补处理缺失数据,并采用Boruta筛选相关特征变量。基于筛选指标构建8种机器学习模型,包括GBM、GLM、XGBoost、KNN、NNET、NB、SVM及RF,以曲线下面积(area under the curve, AUC)、灵敏度、特异性等指标评估模型性能,并基于排列重要性算法识别对PORF有重要影响的变量。
结果
2
PORF总体发生率为27.05%(439/1 623),PORF组患者院内死亡率显著高于非PORF组(12.98%
vs
. 1.60%,
P
<
0.001)。建立的预测模型中,SVM模型效果较好,在测试集中,该模型AUC达到0.705,其灵敏度、特异度、阳性和阴性预测值分别为0.481、0.825、0.504、0.812。根据特征重要性计算,对术后呼吸衰竭预测影响最大的前十个变量为麻醉时长、动脉血二氧化碳分压、钙、淋巴细胞百分比、体外循环时长、术中出血量、年龄、肌酐、天门冬氨基酸氨基转移酶和活化部分凝血活酶时间。
结论
2
本研究成功构建了预测心血管手术患者术后呼吸衰竭的模型,该模型可以识别出高危患者及其发生呼吸衰竭的概率,促进数据驱动的临床决策。
Objective To identify risk factors for postoperative respiratory failure (PORF) in cardiovascular surgery patients using machine learning algorithms and to construct a specific risk prediction model. Methods A retrospective cohort was conducted on 1 623 patients undergoing cardiovascular surgery between 2011 and 2020 from the INSPIRE database. Following data quality analysis
multiple imputation was employed to
handle missing data
and the Boruta algorithm was used for feature selection. Eight machine learning models were constructed based on the selected features
including Gradient Boosting Machine (GBM)
Generalized Linear Model (GLM)
Extreme Gradient Boosting (XGBoost)
K-Nearest Neighbors (KNN)
Neural Network (NNET)
Naive Bayes (NB)
Support Vector Machine (SVM)
and Random Forest (RF). Model performance was evaluated using metrics including the area under the curve (AUC)
sensitivity
and specificity. Variables significantly influencing PORF were identified using the permutation importance algorithm. Results The overall incidence of PORF was 27.05% (439/1 623). The in-hospital mortality rate was significantly higher in the PORF group than the non-PORF group (12.98%
vs
1.60%
P
<
0.001). Among the developed models
the SVM model demonstrated the best performance
achieving an AUC of 0.705 in the testing set
with a sensitivity
specificity
positive predictive value (PPV)
and negative predictive value (NPV) of 0.481
0.825
0.504
and 0.812
respectively. Based on feature importance analysis
the top 10 variables most predictive of PORF were anesthesia duration
arterial partial pressure of carbon dioxide (PaCO₂)
calcium level
lymphocyte percentage
cardiopulmonary bypass duration
intraoperative blood loss
age
creatinine level
aspartate aminotransferase (AST) level
and activated partial thromboplastin time (aPTT). Conclusion A predictieon model for PORF following cardiovascular surgery is successfully developed. This model can identify high-risk patients and estimate their probability of developing respiratory failure
thereby facilitating data-driven clinical decision-making.
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