目的 调查惊厥患儿镇静后谵妄发生的危险因素，建立惊厥患儿镇静后谵妄风险列线图预测模型。 方法 前瞻性选取2020年8月—2022年1月在空军军医大学第二附属医院住院治疗的373例惊厥患儿作为研究对象，其中建模组245例，验证组128例。通过多因素logistic回归分析筛选患儿镇静后谵妄发生的独立预测因子，并建立列线图模型，分别采用校准曲线、受试者工作特征曲线和决策曲线分析对模型的准确度、区分度和临床应用价值进行评估。 结果 惊厥患儿镇静后谵妄发生率为22.3%（83/373）。多因素logistic回归分析显示，年龄>5岁是惊厥患儿镇静后谵妄的保护因素（
OR=0.401，
P<0.05），合并感染、入住儿童重症监护病房、应用苯二氮?类药物、惊厥持续状态史、谵妄发作史是危险因素（
OR分别为3.020、3.126、5.219、2.623、3.119，均
P<0.05）。列线图预测模型
H-
L偏差度检验显示出较好的拟合度（
χ2![]()
![]()
=9.494，
P=0.302）。内部、外部验证显示，校准曲线实际值与预测值间的平均绝对误差分别为0.030和0.018，受试者工作特征曲线下面积分别为0.777和0.775。决策曲线分析显示，当预测风险阈值>0.01时模型提供显著临床净收益。 结论 年龄、合并感染、入住儿童重症监护病房、应用苯二氮?类药物、惊厥持续状态史、谵妄发作史与惊厥患儿镇静后谵妄发生密切相关；根据这些因素建立的惊厥患儿镇静后谵妄风险列线图预测模型具有较高的准确度、区分度和临床应用价值。
Abstract
Objective To investigate the risk factors for delirium after sedation in children with convulsion, and to establish a nomogram model for predicting the risk of delirium. Methods A total of 373 children with convulsion who were hospitalized in the pediatric ward of the Second Affiliated Hospital of Air Force Medical University from August 2020 to January 2022 were prospectively enrolled. There were 245 children in the modeling group and 128 children in the validation group. A multivariate logistic regression analysis was used to identify independent predictive factors for delirium after sedation and establish a nomogram model for predicting the risk of this disorder based on these factors. The calibration curve, the receiver operating characteristic curve, and the decision curve analysis were used to evaluate the accuracy, discriminatory ability, and clinical application value of this model, respectively. Results The incidence of delirium after sedation was 22.3% (83/373) in the children with convulsion. The multivariate logistic regression analysis showed that age>5 years (OR=0.401, P<0.05) was a protective factor against delirium after sedation in these children, while presence of infection (OR=3.020, P<0.05), admission to the pediatric intensive care unit (OR=3.126, P<0.05), use of benzodiazepines (OR=5.219, P<0.05), history of status convulsion (OR=2.623, P<0.05), and history of delirium episodes (OR=3.119, P<0.05) were risk factors for delirium. The H-L deviation test of the nomogram prediction model showed a good degree of fit (χ2=9.494, P=0.302). Internal and external validation showed that the mean absolute errors between the actual and predicted values of the calibration curve were 0.030 and 0.018, respectively, and the areas under the receiver operating characteristic curve were 0.777 and 0.775, respectively. The decision curve analysis showed that the model provided significant net clinical benefit when the predicted risk threshold was >0.01. Conclusions Age, presence of infection, admission to the pediatric intensive care unit, use of benzodiazepines, history of status convulsion, and history of delirium episodes are closely associated with the development of delirium after sedation in children with convulsion. The nomogram model for predicting this disorder that is established based on these factors has relatively high accuracy, discriminatory ability, and clinical application value.
关键词
谵妄 /
惊厥 /
镇静 /
危险因素 /
列线图模型 /
儿童
Key words
Delirium /
Convulsion /
Sedation /
Risk factor /
Nomogram model /
Child
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