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心脏外科手术后体外膜肺治疗50例
引用本文:李景文,龙村,楼松,黑飞龙,于坤,王仕刚,胡盛寿,许建屏,常谦,刘平,张海涛,孙寒松,王巍.心脏外科手术后体外膜肺治疗50例[J].中华胸心血管外科杂志,2011,27(2).
作者姓名:李景文  龙村  楼松  黑飞龙  于坤  王仕刚  胡盛寿  许建屏  常谦  刘平  张海涛  孙寒松  王巍
作者单位:中国医学科学院,北京协和医学院,心血管病研究所,阜外心血管病医院体外循环科,北京,100037
摘    要:目的 总结50例成人心脏外科术后体外膜肺治疗的临床经验,并尝试确定院内死亡的预测因子.方法 2004年至2008年,50例心脏外科术后病人接受体外膜肺治疗.记录病人基本资料,体外膜肺建立时的临床特征,并发症及院内死亡比例,以逻辑回归计算院内死亡的预测因子.结果 38例病人脱机,33例出院,生存比例66%.经逻辑回归计算,体外膜肺建立前的乳酸水平为院内死亡的预测因子.结论 体外膜肺可治疗心脏手术后顽固性心源性休克及呼吸功能异常.
Abstract:
Objective Extracorporeal membrane oxygenation is a cardiopulmonary supportive therapy. Since 2004, our institution has adopted venoarterial ECMO for adult patients who otherwise could not be weaned from cardiopulmonary bypass and patients experiencing postcardiotomy cardiogenic shock and/or pulmonary dysfunction unresponsive to conventional treatment algorithms. In this study, we reviewed our experience with ECMO support and tried to identify measurable values which might predict in-hospital mortality. Methods From January 2004 through December 2008, 50 of 21,298 adult patients received VA ECMO. We retrospectively analyzed clinical records of these 50 consecutive patients. Demographics, preoperative measurements, clinical characteristics at the time of ECMO implantation, ECMO related complications and in-hospital mortality were collected. Logistic regression analyses were performed to investigate predictors of mortality. A p value ≤0. 05 was accepted as significant. Results Mean ECMO duration was ( 110 ± 17 ) hours. 38 patients were weaned from ECMO and 33 patients survived upon discharge. The overall survival was 66%. In univariate analyses, duration of ECMO support, receiving cardiopulmonary resuscitation prior to ECMO setup, ECMO setup in ICU, pre-ECMO plasma lactate level, infection, lower limbs ischemia, renal failure, experiencing at least one ECMO related complications were all associated with in-hospital death. In a multiple logistic regression adjusted for other factors mentioned above, blood lactate level before initiation of ECMO was a risk factor associated with in-hospital mortality (OR 1. 27 95% CI 1. 042-1. 542 ). To evaluate the utility of pre-ECMO lactate in predicting mortality, a conventional receiver operating characteristic curve was produced. Sensitivity and specificity were optimal at a cut-off point of 12.6 mmol/L, with an AUC of 0. 752. The positive and negative predictive values were 73.3% and 83.9% respectively. Conclusion ECMO is a justifiable alternative treatment for postoperative refractory cardiac and pulmonary dysfunction which could rescue more than 60 percent of otherwise fatal patients. Patients with pre-ECMO lactate above 12.6mmol/L are at higher risks for in-hospital death. Evidence based therapy for this group of high risk patients is needed.

关 键 词:心脏外科手术  体外膜氧合技术  死亡率

Results of 50 adult patients treated with extracorporeal membrane oxygenation for refractory postoperative cardiogenic shock
LI Jing-wen,LONG Cun,LOU Song,HEI Fei-long,YU Kun,WANG Shi-gang,HU Sheng-shou,XU Jian-ping,CHANG Qian,IIU Ping,ZHANG Hai-tao,SUN Han-song,WANG Wei.Results of 50 adult patients treated with extracorporeal membrane oxygenation for refractory postoperative cardiogenic shock[J].Chinese Journal of Thoracic and Cardiovascular Surgery,2011,27(2).
Authors:LI Jing-wen  LONG Cun  LOU Song  HEI Fei-long  YU Kun  WANG Shi-gang  HU Sheng-shou  XU Jian-ping  CHANG Qian  IIU Ping  ZHANG Hai-tao  SUN Han-song  WANG Wei
Abstract:Objective Extracorporeal membrane oxygenation is a cardiopulmonary supportive therapy. Since 2004, our institution has adopted venoarterial ECMO for adult patients who otherwise could not be weaned from cardiopulmonary bypass and patients experiencing postcardiotomy cardiogenic shock and/or pulmonary dysfunction unresponsive to conventional treatment algorithms. In this study, we reviewed our experience with ECMO support and tried to identify measurable values which might predict in-hospital mortality. Methods From January 2004 through December 2008, 50 of 21,298 adult patients received VA ECMO. We retrospectively analyzed clinical records of these 50 consecutive patients. Demographics, preoperative measurements, clinical characteristics at the time of ECMO implantation, ECMO related complications and in-hospital mortality were collected. Logistic regression analyses were performed to investigate predictors of mortality. A p value ≤0. 05 was accepted as significant. Results Mean ECMO duration was ( 110 ± 17 ) hours. 38 patients were weaned from ECMO and 33 patients survived upon discharge. The overall survival was 66%. In univariate analyses, duration of ECMO support, receiving cardiopulmonary resuscitation prior to ECMO setup, ECMO setup in ICU, pre-ECMO plasma lactate level, infection, lower limbs ischemia, renal failure, experiencing at least one ECMO related complications were all associated with in-hospital death. In a multiple logistic regression adjusted for other factors mentioned above, blood lactate level before initiation of ECMO was a risk factor associated with in-hospital mortality (OR 1. 27 95% CI 1. 042-1. 542 ). To evaluate the utility of pre-ECMO lactate in predicting mortality, a conventional receiver operating characteristic curve was produced. Sensitivity and specificity were optimal at a cut-off point of 12.6 mmol/L, with an AUC of 0. 752. The positive and negative predictive values were 73.3% and 83.9% respectively. Conclusion ECMO is a justifiable alternative treatment for postoperative refractory cardiac and pulmonary dysfunction which could rescue more than 60 percent of otherwise fatal patients. Patients with pre-ECMO lactate above 12.6mmol/L are at higher risks for in-hospital death. Evidence based therapy for this group of high risk patients is needed.
Keywords:Cardiac surgical procedures  Extracorooreal membrane oxygenation  Mortality
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