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Effect of Aminophylline on ultra structure changes in myocardium at the early stage of cardiopulmonary resuscitation in rats with sudden cardiac arrest
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- Author:
- No author available
- Journal Title:
- CHINESE JOURNAL OF EMERGENCY MEDICINE
- Issue:
- 5
- DOI:
- 10.3760/j.issn:1671-0282.2005.05.004
- Key Word:
- 复苏;氨茶碱;治疗;病理
Abstract： 目的研究心搏骤停大鼠心肺复苏早期应用氨茶碱对复苏成功率、血液流变学、心功能及大鼠心肌超微结构的影响.方法选60只SD大鼠,随机分为3组:手术对照组(A组),肾上腺素治疗组(B组)和肾上腺素+氨茶碱治疗组(C组),各20只.分别于窒息前、自主循环恢复时及自主循环恢复30 min后进行血流动力学及心功能测定,电镜观察心肌超微结构的变化.结果比较自主循环恢复时间,C组明显少于B组(P＜0.05).C组中有75%自主循环恢复,30 min存活率为70%,B组分别为60%(P＞0.05)和55%(P＞0.05).C组自主循环恢复时及自主循环恢复30 min后的LVSP、dp/dtmax、经LVSP校正后的dp/dt和-dp/dt均明显高于B组(P＜0.05).A组心肌细胞超微结构正常,C组复苏后心肌超微结构略有部分改变,线粒体轻度肿胀及少量空泡形成.B组复苏后心肌细胞部分损害,心肌细胞肌丝排列不整齐,线粒体明显肿胀及空泡化,损害程度比C组严重.结论在复苏早期应用腺苷受体拮抗剂氨茶碱提高了复苏成功率,并且改善了心脏功能,减少了对心肌细胞超微结构的破坏,因此,氨茶碱可作为肾上腺素的增补剂.
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