不同晶体停跳液对未成熟心肌的保护效果
发布时间:2018-10-16 17:05
【摘要】:背景当今心脏外科技术发展迅速,尤以微创、低龄、复杂为特点,而长时间保持无血的直视术野下进行手术,不可避免的要求有良好的心肌保护技术。经历多年的研究,成人的心肌保护理论已经确立,但在儿童特别是小婴儿,由于发育的不成熟,心肌结构和代谢都不一样,而目前对未成熟心肌的研究尚少,临床使用较多的心肌保护液(或称心脏停跳液)为细胞外液型停跳液,但也有使用细胞内液型停跳液。因此可以通过临床对比的研究方式,比较以康斯特保护液(HTK液)为代表的细胞内液型晶体停跳液与以改良ST.ThomasⅡ为代表的细胞外液型晶体停跳液的心肌保护效果。目的比较不同晶体停搏液对未成熟心肌的保护效果。方法2013年1月至2013年10月期间在我院住院行体外循环(CPB)心外直视手术治疗的患者中,手术时年龄在3个月以内的共74例,术中应用改良St.ThomasⅡ晶体停搏液(对照组)37例,应用康斯特保护液(HTK液)(实验组)37例。病种有室间隔缺损、房间隔缺损、法洛氏四联症、右室双出口、完全性房室隔缺损等。两组麻醉方式相同,CPB采用中度低温,肛温30℃时阻断升主动脉,同时主动脉根部顺行灌注。对照组灌注改良St.ThomasⅡ晶体停搏液;B液组灌注HTK液。观察指标:在麻醉后、术后24小时及72小时时外周血血清的肌钙蛋白Ⅰ(cTnⅠ)和肌酸磷酸激酶同工酶B(CKMB)、乳酸脱氢酶(LDH)浓度,CPB后心脏自动复跳率,术后应用正性肌力药物,术后监护天数,术后当天左室射血分数(EF),主动脉阻断前及停止CPB前的右心房心肌组织的电镜下超微结构。结果自发性复跳率无差别,实验组正性肌力药物,术后监护的天数与对照组差异明显,实验组的术后当天左室EF优于对照组,且术后24小时血清c TnⅠ及CKMB、LDH浓度显著低于对照组,但术后72小时浓度与对照组比较无统计学意义。主动脉阻断前心肌线粒体基本正常,偶见基质颗粒丢失或线粒体肿胀。停止CPB前,线拉体存在不同程度的损伤样改变,如基质外漏、嵴断裂或空泡样改变。主动脉开放后两组患儿心肌线粒体Flameng评分显著增高(P0.01),对照组评分比实验组明显增高(P0.05)。结论HTK液对未成熟心肌的保护作用明显优于改良St.ThomasⅡ液。
[Abstract]:Background Cardiac surgery technology is developing rapidly nowadays, especially with the characteristics of minimally invasive, low age and complex, and it is inevitable to have good myocardial protection technique to operate under the open vision field of blood free for a long time. After years of research, adult myocardial protection theory has been established, but in children, especially in small infants, the structure and metabolism of myocardium are different due to immature development. More cardioprotective fluids (or cardioplegia) are used in clinic as extracellular cardioplegia, but there are also intracellular cardioplegia. Therefore, we can compare the myocardial protective effects of intracellular liquid crystal cardioplegia (ICL) represented by Conster's protective liquid (HTK) and modified ST.Thomas 鈪,
本文编号:2275060
[Abstract]:Background Cardiac surgery technology is developing rapidly nowadays, especially with the characteristics of minimally invasive, low age and complex, and it is inevitable to have good myocardial protection technique to operate under the open vision field of blood free for a long time. After years of research, adult myocardial protection theory has been established, but in children, especially in small infants, the structure and metabolism of myocardium are different due to immature development. More cardioprotective fluids (or cardioplegia) are used in clinic as extracellular cardioplegia, but there are also intracellular cardioplegia. Therefore, we can compare the myocardial protective effects of intracellular liquid crystal cardioplegia (ICL) represented by Conster's protective liquid (HTK) and modified ST.Thomas 鈪,
本文编号:2275060
本文链接:https://www.wllwen.com/yixuelunwen/waikelunwen/2275060.html
最近更新
教材专著