不同氧合器对体外循环心脏手术患儿中性粒细胞凋亡的影响

目的 研究小儿体外循环(cardiopulmonary bypass,CPB)中不同氧合器对中性粒细胞(PMN)凋亡的影响,为减轻体外循环伞身炎症反应提供新的思路.方法 将60例室间隔缺损患儿随机分为两组(n=30):西京-90鼓泡式氧合器组(B组)和希健-Ⅱ膜式氧合器组(M组).分别于CPB前、CPB结束时、CPB结束后4、8、24 h 5个时点采取静脉血,以伞血细胞计数仪测定PMN数量,流式细胞仪测定PMN凋亡率和PMN表面黏附分子CD11b表达变化,ELISA法测定血浆弹性蛋白酶浓度.结果 两组患者CPB结束后PMN凋亡率明显降低(P<0.05),PMN数量、CD11b表达、血浆弹性蛋白酶浓度明显升高(P<0.05),在CPB结束时及CPB结束后4、8 h PMN凋亡率M组均高于B组(P<0.05);而PMN数量、CD11b表达、血浆弹性蛋白酶水平B组均高于M组(P<0.05).CPB结束后24 h PMN数量B组高于M组(P<0.05).结论 与西京-90鼓泡氧合器相比,应用希健-Ⅱ膜式氧合器可以减轻CPB对PMN凋亡的抑制,进而减轻全身炎症反应.     

不同氧合器对体外循环心脏手术患儿炎性反应的影响

体外循环（CPB）是由氧合器、血泵和其它装置组成的回路，在替代心肺功能、维持全身各脏器及组织代谢需要的同时，也诱发了机体全身炎性反应综合征（SIRS）。氧合器的应用是其诱发因素之一。氧合器的改进有助于降低CPB引起的SIRS。鼓泡式氧合器的工作原理是气血直接接触，膜式氧合器气血不直接接触，而是通过微孔型中空纤维膜将气体弥散入血进行氧合，中空纤维平行排列，内走气外走血。本研究拟比较鼓泡式氧合器和膜式氧合器对CPB下室间隔缺损修补术患儿炎性反应的影响，为合理选择氧合器提供参考。     

低温心肺转流中不同氧合器对儿童罗库溴铵药效动力学的影响

目的研究先天性心脏病学龄儿童心肺转流(CPB)中,不同氧合器对其罗库溴铵药效动力学的影响。方法选择6～12岁先天性心脏病患儿46例,随机分为膜式氧合器组(MO组,n=22)和鼓泡式氧合器组(BO组,n=24)。诱导后静脉给罗库溴铵600μg/kg行气管插管。CPB前、中、后三阶段,肌颤搐反应强度(T1)25%时,静注罗库溴铵200μg/kg。监测两组诱导期、CPB前、中、后期罗库溴铵的起效时间、无反应时间、T110%、T125%、T175%恢复时间及恢复指数等指标。结果两组患儿CPB前罗库溴铵肌松时效比较差异无统计学意义。CPB中,MO组和BO组的起效时间、无反应时间、T110%、T110%～25%、T125%分别为(3.72±2.10)、(29.45±7.67)、(46.36±7.26)、(14.12±2.62)、(60.57±6.31)和(3.62±1.78)、(24.95±6.93)、(43.07±7.99)、(13.04±2.46)、(56.68±6.82)min,组间比较差异无统计学意义。结论低温CPB中使用膜式氧合器与鼓泡式氧合器对罗库溴铵维持量的肌松时效影响差异无统计学意义。     

离体体外循环对丙泊酚浓度的影响

目的探讨离体体外循环(ECC)对丙泊酚浓度的影响。方法确立试验因素有3个,即:氧合器,有3个水平,即进口膜式氧合器(简称进口膜肺)、国产膜式氧合器(简称国产膜肺)和国产鼓泡式氧合器(简称国产鼓泡肺);温度,有2个水平(28℃和35℃);转机时间,有7个水平(ECC前、ECC后1、5、10、20、40、60min)。用反向高效液相法检测丙泊酚浓度。结果氧合器(P=0.045)、温度(P=0.019)和转机时间(P=0.001)对丙泊酚浓度均有影响;进口膜肺与国产膜肺之间差异无统计学意义(P=0.556),进口膜肺(P=0.024)、国产膜肺(P=0.014)丙泊酚浓度在ECC后1、5min明显低于国产鼓泡肺。结论国产鼓泡肺对丙泊酚浓度的影响低于国产膜肺和进口膜肺,国产膜肺对丙泊酚浓度的影响与进口膜肺无差异,28℃时的丙泊酚浓度明显高于35℃,丙泊酚浓度随着转机时间的延长进行性下降。     

前列腺素E1脂肪乳剂在体外循环中对心肌缺血-再灌注损伤的保护作用

目的 探讨前列腺素E1脂肪乳剂(Lipo-PGE1)在体外循环(CPB)中对心肌缺血-再灌注损伤(MIRI)的保护作用.方法 选取我院明确诊断的心脏瓣膜病、先天性心脏病房间隔缺损(ASD)、室间隔缺损(VSD)患者32例,随机分成两组,每组16例.Lipo-PGE1组CPB开始前持续静脉泵滴入Lipo-PGE1(剂量2ng/kg·min)至升主动脉开放后2h;对照组滴入等容量的生理盐水.两组患者均分别于CPB开始前,升主动脉开放后1、2、6和24h等时点抽取动脉血,测心肌肌钙蛋白I(cTnI)、肌酸激酶同工酶MB(CK-MB)、白细胞介素-6(IL-6)、肿瘤坏死因子-α(TNF-α)和可溶性细胞间黏附分子-1(sICAM-1)的表达值.结果 CPB前两组患者的cTnI,CK-MB,IL-6,TNF-α和sICAM-1指标比较差异无统计学意义(P＞0.05),升主动脉开放后1、2、6和24h均较CPB前明显升高(P＜0.01),但Lipo-PGE1组较对照组低(P＜0.05).结论 CPB前至升主动脉开放后2h持续静脉泵滴入Lipo-PGE1(剂量2ng/kg·min),能有效地抑制IL-6,TNF-α的释放,减弱sICAM-1表达,减轻炎症反应和对心肌细胞的损伤,对CPB术中MIRI具有保护作用.     

远隔缺血时处理对体外循环心脏瓣膜置换术患者全身炎性反应的影响

目的 评价远隔缺血时处理对体外循环(CPB)心脏瓣膜置换术患者全身炎性反应的影响.方法 择期CPB心脏瓣膜置换术患者40例,年龄40～64岁,体重50～70 kg,ASA分级Ⅱ或Ⅲ级,采用随机数字表法,将其分为2组(n=20):对照组(C组)、远隔缺血时处理组(R组).R组于主动脉阻断后对右下肢实施3周期5 min缺血/5 min再灌注处理.于CPB前即刻、CPB结束后即刻、6、24h(T1-4)时取右颈内静脉血样,检测血清细胞间粘附分子-1 (ICAM-1)、白细胞介素-6(IL-6)、肿瘤坏死因子-α(TNF-α)的浓度.结果 与C组比较,R组血清ICAM-1、IL-6、TNF-α浓度降低(P＜0.05).与T1时比较,两组T2.3时血清ICAM-1、IL-6、TNF-α浓度升高,C组T4时血清ICAM-1、IL-6浓度升高,R组T4时血清IL-6浓度升高(P＜0.05);与T2时比较,两组T3.4时血清ICAM-1、IL-6、TNF-α浓度降低(P＜0.05);与T3时比较,两组T4时血清ICAM-1、IL-6、TNF-α浓度降低(P＜0.05).结论 远隔缺血时处理可减轻CPB心脏瓣膜置换术患者全身炎性反应.     

还原型谷胱甘肽对心肺转流心内直视手术患儿肺损伤的保护作用

目的 研究还原型谷胱甘肽(GSH)对心肺转流(CPB)心内直视手术患儿肺损伤的保护作用.方法 择期行心脏室间隔缺损修补术患儿30例,年龄2～6岁,体重12～20 kg,随机均分为GSH组(G组)和对照组(C组).G组于预充液中加入GSH 50 mg/kg,并于切皮后即刻静注GSH 50 mg/kg,C组给予等容量5%葡萄糖溶液.分别于切皮前即刻(T1)、主动脉开放后30 min(T2)、停CPB后2 h(T3)、6 h(T4)、12 h(T5)采集桡动脉血,测定血浆肿瘤坏死因子α(TNF-α)、白细胞介素8(IL-8)、丙二醛(MDA)浓度和超氧化物岐化酶(SOD)活性,并进行血气分析,计算呼吸指数(RI)和氧合指数(OI).结果 T2～T5时G组血浆MDA的浓度和RI明显低于、血浆SOD活性和OI明显高于C组(P＜0.05).T2～T5时C组TNF-α、IL-8的浓度高于T1时及G组(P＜0.05).结论 GSH可减轻CPB下心内直视手术患儿的肺损伤,其机制可能与抑制CPB的炎性反应及减轻脂质过氧化程度有关.     

右美托咪定对心内直视手术患者炎性反应和胰岛素抵抗的影响

目的观察右美托咪定对心内直视手术患者炎性反应和胰岛素抵抗的影响。方法择期在心肺转流(CPB)下行心脏瓣膜置换术的患者50例,随机均分为观察组和对照组。观察组麻醉诱导后静注右美托咪定负荷量1.0μg/kg(给药时间15min),随后泵注0.4μg·kg-1·h-1至CPB结束;对照组静注等容量生理盐水。于麻醉诱导后切皮前(T1)、CPB开始后30 min(T2)、停CPB(T3)、CPB结束后2h(T4)采集静脉血检测血清TNF-α、IL-6、胰岛素及血糖水平,计算胰岛素敏感指数(ISI)=1/(血糖×胰岛素)。结果与T1时比较,T2~T4时两组TNF-α、IL-6、胰岛素、血糖明显升高,ISI明显降低(P0.05)。与对照组比较,观察组T2~T4时TNF-α和IL-6,T2、T3时胰岛素和血糖均明显降低(P0.05),而T2、T3时ISI明显升高(P0.05)。两组患者均未出现低血压和心动过缓等不良反应。结论右美托咪定可明显减少CPB下心内直视手术患者炎性反应,降低术中血糖,改善胰岛素抵抗。     

体外循环中鼓泡式氧合器和膜式氧合器引起细胞因子变化的比较

本文对体外循环 (ＣＰＢ)两种氧合器引起细胞因子的变化进行了比较。资料和方法　选取患有房间隔缺损或室间隔缺损的患者 2 3例 ,择期行房缺或室缺修补术。将患者随机分为鼓泡式氧合器组 (Ｂ组 ,其中房缺 7例 ,室缺 4例 ,共 11例 )及膜式氧合器组 (Ｍ组 ,其中房缺 5例 ,室缺 7例 ,共 12例 )。两组病人一般情况无统计学差异 (Ｐ >0 0 5 )。麻醉采用芬太尼、琥珀胆碱诱导 ,以咪唑安定、芬太尼、维库溴铵维持。麻醉中吸 10 0 %纯氧 ,1 5～ 2 0Ｌ/ｍｉｎ。肝素化后建立体外循环 ,使ＡＣＴ >480ｓ。标本采集　采集外周静脉血 3ｍｌ,室温下凝集 …     

氯胺酮对体外循环心脏手术患者血浆S100-β蛋白及炎性因子的影响

目的 观察氯胺酮对体外循环(CPB)心脏手术患者血浆S100-β蛋白及炎性介质肿瘤坏死因子-a(TNF-α)、白细胞介素-6(IL-6)的影响.方法 择期行二尖瓣置换术患者40例,ASA Ⅱ或Ⅲ级,随机分为氯胺酮组(K组)和对照组(C组),每组20例.常规全麻诱导后,K组以氯胺酮2mg/kg静脉注射,继之以50μg·kg-1·min-1的速度持续泵注至手术结束,C组给予等量生理盐水.分别于麻醉诱导后(氯胺酮注射前,T1)、CPB后20 min(T2)、CPB结束时(T3)、术毕(T4)、术后24 h(T5)时抽取颈静脉球部血,测定各时点血浆S100-β、TNF-α及IL-6浓度,并对S100-β与TNF-α、IL-6之间的相关性进行分析.结果 与T1时比较,T2时两组患者血浆TNF-α、IL-6显著升高,T4达到高峰,T5时明显下降但仍高于T1时(P<0.05).T2～T5时K组TNF-α均显著低于C组(P<0.05).T2～T4时K组IL-6显著低于C组(P<0.05).T2时两组患者血浆S100-β浓度较T1时显著升高;T3时达到高峰,T5时显著下降但仍高于T1时(P<0.05).与C组比较,T2～T5时K组S100-β均显著降低(P<0.05).T2～T5时S100-β与TNF-α有明显的相关性(r-分别为0.815,0.791,0.684,0.572,P<0.05);T2～T4时S100-β与IL-6有明显相关性(r分别为0.785,0.824,0.703,P<0.05).结论 CPB心脏手术期间应用麻醉剂量的氯胺酮可明显降低CPB诱发的TNF-α、IL-6及S100-β蛋白的升高.     

不同氧合器对体外循环心脏手术患儿中性粒细胞凋亡的影响

Objective To evaluate the effect of two kind oxygenators on polymorphonuclear neutrophil (PMN) apoptosis, and to give a method of inhibting the systemic inflammatory response syndrome(SIRS) to cardiopulmonary bypass(CPB). Methods Sixty VSD patients undergoing open heart surgery with CPB were randomly divided into two groups(n = 30): group B(bubble oxygenator), group M(membrane oxygenator). Blood samples were drawn from the central venous line before starting CPB, at the end of CPB, 4, 8 and 24 h after CPB. The PMN counts were performed by blood cell counter. PMN apoptosis and the expression of CD11b were evaluated by flow eytometry. The plasma concentration of elastase was determined by enzyme linked immunosorbent assays. Results The rates of PMN apoptosis were significantly reduced (P<0.05) and the PMN counts, the expression of CD11b and the plasma con-centration of elastase were remarkably increased after CPB(P<0.05), but at the end of CPB, 4 h and 8 h after CPB the rate of PMN apoptosis was higher in group M than that in group B. PMN counts, the expression of CDI lb and the plasma concentration of elastase were higher in group B than in group M (P<0.05). The PMN counts were higher in group B than in group M 24 h after CPB (P< 0.05). Conclusion XiJian-Ⅱ membrane oxygenator can increase PMN apoptosis and depress systemic inflammatory response better than XIJing-90 bubble oxygenator.     

不同氧合器对体外循环心脏手术患儿中性粒细胞凋亡的影响

Objective To evaluate the effect of two kind oxygenators on polymorphonuclear neutrophil (PMN) apoptosis, and to give a method of inhibting the systemic inflammatory response syndrome(SIRS) to cardiopulmonary bypass(CPB). Methods Sixty VSD patients undergoing open heart surgery with CPB were randomly divided into two groups(n = 30): group B(bubble oxygenator), group M(membrane oxygenator). Blood samples were drawn from the central venous line before starting CPB, at the end of CPB, 4, 8 and 24 h after CPB. The PMN counts were performed by blood cell counter. PMN apoptosis and the expression of CD11b were evaluated by flow eytometry. The plasma concentration of elastase was determined by enzyme linked immunosorbent assays. Results The rates of PMN apoptosis were significantly reduced (P<0.05) and the PMN counts, the expression of CD11b and the plasma con-centration of elastase were remarkably increased after CPB(P<0.05), but at the end of CPB, 4 h and 8 h after CPB the rate of PMN apoptosis was higher in group M than that in group B. PMN counts, the expression of CDI lb and the plasma concentration of elastase were higher in group B than in group M (P<0.05). The PMN counts were higher in group B than in group M 24 h after CPB (P< 0.05). Conclusion XiJian-Ⅱ membrane oxygenator can increase PMN apoptosis and depress systemic inflammatory response better than XIJing-90 bubble oxygenator.     

不同氧合器对体外循环心脏手术患儿中性粒细胞凋亡的影响

Objective To evaluate the effect of two kind oxygenators on polymorphonuclear neutrophil (PMN) apoptosis, and to give a method of inhibting the systemic inflammatory response syndrome(SIRS) to cardiopulmonary bypass(CPB). Methods Sixty VSD patients undergoing open heart surgery with CPB were randomly divided into two groups(n = 30): group B(bubble oxygenator), group M(membrane oxygenator). Blood samples were drawn from the central venous line before starting CPB, at the end of CPB, 4, 8 and 24 h after CPB. The PMN counts were performed by blood cell counter. PMN apoptosis and the expression of CD11b were evaluated by flow eytometry. The plasma concentration of elastase was determined by enzyme linked immunosorbent assays. Results The rates of PMN apoptosis were significantly reduced (P<0.05) and the PMN counts, the expression of CD11b and the plasma con-centration of elastase were remarkably increased after CPB(P<0.05), but at the end of CPB, 4 h and 8 h after CPB the rate of PMN apoptosis was higher in group M than that in group B. PMN counts, the expression of CDI lb and the plasma concentration of elastase were higher in group B than in group M (P<0.05). The PMN counts were higher in group B than in group M 24 h after CPB (P< 0.05). Conclusion XiJian-Ⅱ membrane oxygenator can increase PMN apoptosis and depress systemic inflammatory response better than XIJing-90 bubble oxygenator.     

不同氧合器对体外循环心脏手术患儿中性粒细胞凋亡的影响

Objective To evaluate the effect of two kind oxygenators on polymorphonuclear neutrophil (PMN) apoptosis, and to give a method of inhibting the systemic inflammatory response syndrome(SIRS) to cardiopulmonary bypass(CPB). Methods Sixty VSD patients undergoing open heart surgery with CPB were randomly divided into two groups(n = 30): group B(bubble oxygenator), group M(membrane oxygenator). Blood samples were drawn from the central venous line before starting CPB, at the end of CPB, 4, 8 and 24 h after CPB. The PMN counts were performed by blood cell counter. PMN apoptosis and the expression of CD11b were evaluated by flow eytometry. The plasma concentration of elastase was determined by enzyme linked immunosorbent assays. Results The rates of PMN apoptosis were significantly reduced (P<0.05) and the PMN counts, the expression of CD11b and the plasma con-centration of elastase were remarkably increased after CPB(P<0.05), but at the end of CPB, 4 h and 8 h after CPB the rate of PMN apoptosis was higher in group M than that in group B. PMN counts, the expression of CDI lb and the plasma concentration of elastase were higher in group B than in group M (P<0.05). The PMN counts were higher in group B than in group M 24 h after CPB (P< 0.05). Conclusion XiJian-Ⅱ membrane oxygenator can increase PMN apoptosis and depress systemic inflammatory response better than XIJing-90 bubble oxygenator.     

不同氧合器对体外循环心脏手术患儿中性粒细胞凋亡的影响

Objective To evaluate the effect of two kind oxygenators on polymorphonuclear neutrophil (PMN) apoptosis, and to give a method of inhibting the systemic inflammatory response syndrome(SIRS) to cardiopulmonary bypass(CPB). Methods Sixty VSD patients undergoing open heart surgery with CPB were randomly divided into two groups(n = 30): group B(bubble oxygenator), group M(membrane oxygenator). Blood samples were drawn from the central venous line before starting CPB, at the end of CPB, 4, 8 and 24 h after CPB. The PMN counts were performed by blood cell counter. PMN apoptosis and the expression of CD11b were evaluated by flow eytometry. The plasma concentration of elastase was determined by enzyme linked immunosorbent assays. Results The rates of PMN apoptosis were significantly reduced (P<0.05) and the PMN counts, the expression of CD11b and the plasma con-centration of elastase were remarkably increased after CPB(P<0.05), but at the end of CPB, 4 h and 8 h after CPB the rate of PMN apoptosis was higher in group M than that in group B. PMN counts, the expression of CDI lb and the plasma concentration of elastase were higher in group B than in group M (P<0.05). The PMN counts were higher in group B than in group M 24 h after CPB (P< 0.05). Conclusion XiJian-Ⅱ membrane oxygenator can increase PMN apoptosis and depress systemic inflammatory response better than XIJing-90 bubble oxygenator.     

不同氧合器对体外循环心脏手术患儿中性粒细胞凋亡的影响

Objective To evaluate the effect of two kind oxygenators on polymorphonuclear neutrophil (PMN) apoptosis, and to give a method of inhibting the systemic inflammatory response syndrome(SIRS) to cardiopulmonary bypass(CPB). Methods Sixty VSD patients undergoing open heart surgery with CPB were randomly divided into two groups(n = 30): group B(bubble oxygenator), group M(membrane oxygenator). Blood samples were drawn from the central venous line before starting CPB, at the end of CPB, 4, 8 and 24 h after CPB. The PMN counts were performed by blood cell counter. PMN apoptosis and the expression of CD11b were evaluated by flow eytometry. The plasma concentration of elastase was determined by enzyme linked immunosorbent assays. Results The rates of PMN apoptosis were significantly reduced (P<0.05) and the PMN counts, the expression of CD11b and the plasma con-centration of elastase were remarkably increased after CPB(P<0.05), but at the end of CPB, 4 h and 8 h after CPB the rate of PMN apoptosis was higher in group M than that in group B. PMN counts, the expression of CDI lb and the plasma concentration of elastase were higher in group B than in group M (P<0.05). The PMN counts were higher in group B than in group M 24 h after CPB (P< 0.05). Conclusion XiJian-Ⅱ membrane oxygenator can increase PMN apoptosis and depress systemic inflammatory response better than XIJing-90 bubble oxygenator.     

不同氧合器对体外循环心脏手术患儿中性粒细胞凋亡的影响

Objective To evaluate the effect of two kind oxygenators on polymorphonuclear neutrophil (PMN) apoptosis, and to give a method of inhibting the systemic inflammatory response syndrome(SIRS) to cardiopulmonary bypass(CPB). Methods Sixty VSD patients undergoing open heart surgery with CPB were randomly divided into two groups(n = 30): group B(bubble oxygenator), group M(membrane oxygenator). Blood samples were drawn from the central venous line before starting CPB, at the end of CPB, 4, 8 and 24 h after CPB. The PMN counts were performed by blood cell counter. PMN apoptosis and the expression of CD11b were evaluated by flow eytometry. The plasma concentration of elastase was determined by enzyme linked immunosorbent assays. Results The rates of PMN apoptosis were significantly reduced (P<0.05) and the PMN counts, the expression of CD11b and the plasma con-centration of elastase were remarkably increased after CPB(P<0.05), but at the end of CPB, 4 h and 8 h after CPB the rate of PMN apoptosis was higher in group M than that in group B. PMN counts, the expression of CDI lb and the plasma concentration of elastase were higher in group B than in group M (P<0.05). The PMN counts were higher in group B than in group M 24 h after CPB (P< 0.05). Conclusion XiJian-Ⅱ membrane oxygenator can increase PMN apoptosis and depress systemic inflammatory response better than XIJing-90 bubble oxygenator.     

不同氧合器对体外循环心脏手术患儿中性粒细胞凋亡的影响

Objective To evaluate the effect of two kind oxygenators on polymorphonuclear neutrophil (PMN) apoptosis, and to give a method of inhibting the systemic inflammatory response syndrome(SIRS) to cardiopulmonary bypass(CPB). Methods Sixty VSD patients undergoing open heart surgery with CPB were randomly divided into two groups(n = 30): group B(bubble oxygenator), group M(membrane oxygenator). Blood samples were drawn from the central venous line before starting CPB, at the end of CPB, 4, 8 and 24 h after CPB. The PMN counts were performed by blood cell counter. PMN apoptosis and the expression of CD11b were evaluated by flow eytometry. The plasma concentration of elastase was determined by enzyme linked immunosorbent assays. Results The rates of PMN apoptosis were significantly reduced (P<0.05) and the PMN counts, the expression of CD11b and the plasma con-centration of elastase were remarkably increased after CPB(P<0.05), but at the end of CPB, 4 h and 8 h after CPB the rate of PMN apoptosis was higher in group M than that in group B. PMN counts, the expression of CDI lb and the plasma concentration of elastase were higher in group B than in group M (P<0.05). The PMN counts were higher in group B than in group M 24 h after CPB (P< 0.05). Conclusion XiJian-Ⅱ membrane oxygenator can increase PMN apoptosis and depress systemic inflammatory response better than XIJing-90 bubble oxygenator.     

不同氧合器对体外循环心脏手术患儿中性粒细胞凋亡的影响

Objective To evaluate the effect of two kind oxygenators on polymorphonuclear neutrophil (PMN) apoptosis, and to give a method of inhibting the systemic inflammatory response syndrome(SIRS) to cardiopulmonary bypass(CPB). Methods Sixty VSD patients undergoing open heart surgery with CPB were randomly divided into two groups(n = 30): group B(bubble oxygenator), group M(membrane oxygenator). Blood samples were drawn from the central venous line before starting CPB, at the end of CPB, 4, 8 and 24 h after CPB. The PMN counts were performed by blood cell counter. PMN apoptosis and the expression of CD11b were evaluated by flow eytometry. The plasma concentration of elastase was determined by enzyme linked immunosorbent assays. Results The rates of PMN apoptosis were significantly reduced (P<0.05) and the PMN counts, the expression of CD11b and the plasma con-centration of elastase were remarkably increased after CPB(P<0.05), but at the end of CPB, 4 h and 8 h after CPB the rate of PMN apoptosis was higher in group M than that in group B. PMN counts, the expression of CDI lb and the plasma concentration of elastase were higher in group B than in group M (P<0.05). The PMN counts were higher in group B than in group M 24 h after CPB (P< 0.05). Conclusion XiJian-Ⅱ membrane oxygenator can increase PMN apoptosis and depress systemic inflammatory response better than XIJing-90 bubble oxygenator.