山莨菪碱心肌保护作用的临床研究

目的：观察山莨菪碱（654－2）对体外循环（CPB）心肌缺血－再灌注损伤的保护作用，方法：将24例心脏瓣膜置换术患者随机分为654－2组（13例）和对照组（11例），６５４－２组患者术中心肌灌注液中加入654－2（15mg/500ml)，对照组则常规用冷晶体停搏液，通过右心房皇管分别于手术开始前、转流后30分钟，主动脉开放后，停机，手术结束，术后1日及术后3日抽血测定血中超氧化物歧化酶（SOD）和丙二醛（MDA）的含量，并观察2组患者术中心脏复跳情况和术后正性肌为药物的使用情况。结果：2组术中血SOD均明显下降，以对照组更为显著（P＜0．05），术后1日654－2组血SOD含量接近术前水平，而对照组于术后3日才恢复术前水平。2组术中血MDA含量则较术前上升，仍以对照组为明显（P＜0．05），手术结束时开始下降，术后3日降至术前水平，术中主动脉开放后654－2组心脏自动复跳率较对照组高，术后对照组正性肌力药物（多巴胺等）的使用量较654－2组增多，结论：654－2可保持缺血－再灌注损伤心肌细胞SOD活性，减少心肌细胞MDA产生，有效地保护心肌功能。

The clinical study of anisodamine in myocardial protection

Objective:To observe the protective effect of anisodamine (6542) on myocardial ischemic and reperfusion injury in patients during cardiopulmonary bypass (CPB).Methods:Twentyfour patients underwent valve replacement were randomly divided into two groups.Patients in 6542 group ( n =13) received 6542 in addition to conventional cardioplegic treatment (15 mg/500 ml),and received conventional cardioplegic treatment during operation in control group ( n =11).The blood samples were taken at seven different intervals to determine the levels of superoxide dismutase (SOD) and malondialdehyde (MDA).Cardiac resuscitation and use of positive inotropic drugs were observed.Results:The activity of SOD decreased in two groups,and it was much lower in control group during CPB.SOD activity returned to baseline values one day after operation in 6542 group and three days after operation in control group,respectively.The level of MDA increased in two groups with more marked elevation in control group during CPB ( P <0 05),and it restored until three days after operation.The incidence of active cardiac resuscitation in 6542 group was higher than that in controls.The doses of positive inotropic drugs in control group were higher than that in 6542 group.Conclusions:This study suggests that 6542 can improve the activity of SOD and decrease the production of MDA,thereby attenuating myocardial ischemic and reperfusion injury.