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作 者:张义轩[1] 张挚[1] 杨晴[1] 闫增[1] 信文启[1] 马传根[1]
出 处:《中华实验外科杂志》2014年第7期1594-1596,共3页Chinese Journal of Experimental Surgery
摘 要:目的 观察体外循环下经主动脉根部注射参麦注射液对二尖瓣置换术患者心肌损伤的影响。方法 拟行二尖瓣置换术患者40例,将患者随机分为两组(n=20):对照组(C组)和参麦组(S组),每组20例。S组于阻断升主动脉后,立即经升主动脉根部注射参麦注射液1 ml/kg,随后灌注4℃高钾(K+浓度:22 mmol/L)含血心脏停搏液20 ml/kg,C组注射等量生理盐水,随后灌注4℃高钾(K+浓度:22 mmol/L)含血心脏停搏液20 ml/kg,两组患者每30 min复灌不含参麦的相同成分含血心脏停搏液10 ml/kg。分别于主动脉阻断前即刻(T1)、主动脉阻断后4 h(T2)和术后24 h(T3)时,采集中心静脉血4 ml,测定血浆心肌肌钙蛋白I(cTnI)浓度、肌酸激酶(CK)和肌酸激酶同功酶(CK-MB)的活性。记录阻断升主动脉至心脏停搏所用时间、心脏自动复跳率、心脏复跳期间利多卡因使用剂量及体外循环(CPB)后1 h多巴胺用量。结果 T2T3时C组血浆cTnI浓度分别为(7.29±1.86)、(5.46±1.59)μg/L,S组T2T3时血浆cTnI浓度值分别为(4.81±1.50)、(2.62±0.78)μg/L,两组比较S组T2T3时血浆cTnI浓度值降低(P〈0.05),T2T3时C组血浆CK浓度值分别为(99±11)和(70±9)U/L,S组T〈sup〉T3时血浆CK浓度值分别为:(59±9)、(32±5)U/L,T2T3组时血浆CK浓度值降低(P〈0.05),T2T3时C组血浆CK-MB浓度值分别为(8.8±1.9)、(5.5±1.6)U/L,S组T2T3时血浆CK-MB浓度值分别为(5.3±1.2)、(3.7±0.9)U/L,T2T3S组时血浆CK-MB浓度值降低(P〈0.05)。结论 体外循环下经主动脉根部注射参麦注射液可减轻二尖瓣置换术患者心肌的损伤。Objective To-investigate the effects of Shenmai injection through aortic root on myocardial injury in patients undergoing mitral valve replacement (MVR). Methods Forty consenting ASA Ⅱ or Ⅲ patients undergoing elective MVR were randomly divided into 2 groups (n = 20 each) : Shenmai injection group (S) and control group (C). In S group myocardial arrest was produced by infusing Shenmai injection (1 ml/kg) through aortic root after aorta was cross-clamped, followed by cold blood cardiaplegic solution (20 ml/kg). In C group asystole was produced with cold blood cardioplegic solution (20 ml/kg) alone every 30 min. Blood samples (4 ml) were taken from the central vein at 5 min before (Tt) and 4 h after aortic cross-clamping (T2 ) and 24 h after operation ( T3 ) for determination of plasma cardiac troponin I (cTnI) concentration and the concinase (CK) and creatin kinase isoenzyme-MB (CK-MB). The restoration of spontantaneous heart, the amount of dopamine administered during the 2 h after cardiopulmonary bypass (CPB) and aortic cross-damping time were recorded. Results The concenentration of serum cTnI at T2-T3 was (7.29±1.86) and (5.46±1.59) μg/L in C group, and (4.81 ±1.50) and (2.62±0.78) μg/L in S (P 〈0. 05). The concenentration of serum CK at T2-T3 was (99 ± 11 ) and (70 ±9) U/L in C group, and (59 ± 9) and (32 ±5) U/L in S group ( P 〈 0.05 ). The concenentration of serum CK-MB at T2-T3 was (8. 8 ±1.9) and (5.5 ±1.6) U/L in C group, and (5.3 ±1.2) and (3.7 ±0.9) U/L in S group (P 〈0. 05). Conclusion Shenmai injection through aortic root can attenuate the myocardial injury in patients undergoing MVR.
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