影响婴幼儿先心病术后机械通气时间的多因素分析

目的:分析影响体质量为10kg以下的房间隔缺损、室间隔缺损合并或不合并动脉导管未闭患儿术后机械通气辅助呼吸时间的因素,以更好地掌握拔管时机,提高外科治疗效果.方法:回顾性分析体质量为10kg以下的231例房间隔缺损、室间隔缺损术后合并或不合并动脉导管未闭的婴幼儿临床资料,并对影响机械通气使用时间的10项可能因素进行多因素逐步Logistic回归分析.结果:231例患儿机械通气使用时间3～375(平均23.5)h;多元逐步Logistic回归分析显示重度肺高压、术前肺部感染、阻断主动脉时间、体外循环时间、术后并发症、膜肺及改良超滤的应用、体质量等均为机械通气使用时间的影响因素.结论:重度肺高压、术前肺部感染、阻断主动脉时间长、体外循环时间长、术后出现并发症均可延长术后机械通气使用时间;术中应用膜肺和改良超滤及大体质量能缩短机械通气使用时间.

Multifactor analysis of postoperative mechanical ventilationsupporting time in infants with congenital heart diseases

ObjectiveTo analyze the multiple factors affecting the postoperative mechanical ventilation supporting time in infants less than 10kg with simple congenital heart diseases and to seize time by the forelock of extube and improve the outcome of surgical treatment. MethodsData of 231 infants less than 10kg with atrial septal defect(ASD),ventricular septal defect, and combining patent ductus arteriosus were retrospectively analyzed. The multivaricate stepwise logistic regression statistics were done for the predisposing factors affecting the ventilative supporting time. ResultsThe ventilative supporting time was 3~375 (average 23.5 h) h. The multivaricate stepwise logistic regression analysis indicated that severe pulmonary hyperpressure, cross-cramp aortic time, cardiopulmonary bypass time, preoperational pulmonary infection, membrane oxygenator, modified ultrafiltration, weight, and postoperative complications were significantly correlated to the ventilative supporting time. ConclusionSevere pulmonary hyperpressure, preoperational pulmonary infection, long cross-cramp aortic time, long cardiopulmonary bypass time, postoperative complications all prolong the ventilation supporting time; the use of membrane oxygenator and modified ultrafiltration during the operation and big weight can diminish the pulmonary complications and shorten the ventilation supporting time.