体外循环下心脏术后发生急性呼吸窘迫综合征的危险因素分析及其预测价值

Risk factors and predictive value of acute respiratory distress syndrome after cardiac surgery under cardiopulmonary bypass

目的:分析体外循环下心脏术后急性呼吸窘迫综合征(acute respiratory distress syndrome, ARDS)发生的危险因素及其预测价值。方法:选取2016年11月—2020年12月承德医学院附属医院行体外循环下心脏手术患者283例,依据术后是否发生ARDS分为ARDS组和非ARDS组,统计2组患者临床资料,采用多因素logistic回归分析探讨体外循环下心脏术后ARDS的危险因素,采用ROC曲线分析危险因素对ARDS的预测价值。结果:单因素logistic回归分析结果显示:年龄、体重指数、脑梗死、心功能等级、置换生物瓣、急行体外循环、体外循环时长、主动脉阻断时长、二次开胸与术后ARDS相关(P<0.05)。多因素logistic回归分析显示年龄、体重指数、体外循环时长、主动脉阻断时长、心功能(NYHA分级)、二次开胸为术后ARDS发生的独立危险因素。ROC曲线分析ARDS发生效果最好的是体外循环时长(截断值为110.5 min,曲线下面积为0.794);其次是主动脉阻断时长;再次为体重指数。结论:年龄>60.5岁、体重指数>24.4 kg/m2、体外循环时间>110.5 min、主动脉阻断时间>74.5 min对体外循环下心脏术后发生ARDS有预测价值,多因素联合分析显示年龄+体重指数+体外时长预测敏感度达90%。

Objective To analyze the risk factors and predictive value of acute respiratory distress syndrome(ARDS)after cardiac surgery under cardiopulmonary bypass.Methods Two hundred and eighty-three patients who underwent cardiac surgery under cardiopulmonary bypass from November 2016 to December 2020 at the Affiliated Hospital of Chengde Medical College were divided into an ARDS group and a non ARDS group according to the occurrence of ARDS after the operation.The clinical data of the two groups were statistically analyzed.The risk factors of ARDS after cardiac surgery under cardiopulmonary bypass were analyzed by multivariate logistic regression analysis.The predictive value of risk factors for ARDS was analyzed by ROC curve.Results Univariate logistic regression analysis showed that age,body mass index,cerebral infarction,cardiac function grade,replacement of biological valve,urgent cardiopulmonary bypass,cardiopulmonary bypass time,aortic clamp time,and secondary thoracotomy were associated with postoperative ARDS(P<0.05).Multivariate logistic regression analysis showed that age,body mass index,cardiopulmonary bypass time,aortic clamp time,cardiac function(NYHA grade)and secondary thoracotomy were independent risk factors for the occurrence of postoperative ARDS.ROC curve analysis showed that the best effect of ARDS was the cardiopulmonary bypass time(the cut-off value was 110.5 min,and the area under the curve was 0.794);The second is aortic clamp time;Body mass index.Conclusion Age>60.5 years old,body mass index>24.4 kg/m2,cardiopulmonary bypass time>110.5 min,aortic clamp time>74.5 min and secondary thoracotomy had predictive value for ARDS after cardiac surgery under cardiopulmonary bypass.The combined prediction of multiple factors showed that the sensitivity of age+body mass index+in vitro duration was 90%.