三维超声联合静脉滴注微泡对急性心肌梗死猪冠状动脉及心肌微循环的影响
冯骞;杨莉;邱世锋;吴赛珠;郑华;吴爵非;
摘要(Abstract):
目的探讨三维超声间断高机械指数脉冲联合静脉滴注微泡介导的空化效应对急性心肌梗死(AMI)猪冠状动脉和心肌微循环的影响。方法高胆固醇喂养巴马猪10只,采用损伤冠状动脉后注射血栓的方法建立AMI模型。将10只模型猪随机分为观察组和对照组,各5只。观察组给予三维超声间断高机械指数脉冲联合静脉滴注微泡,对照组仅给予三维超声间断高机械指数脉冲,两组均治疗30 min。两组治疗结束后1、24 h行冠状动脉造影检查,记录冠状动脉再通情况;治疗前及治疗结束后1、24 h行低机械指数心肌声学造影检查,观察缺血心肌微循环灌注情况(以平均声强度表示);治疗前及治疗结束后1 h行心电图检查,测量V3导联ST段抬高值。结果治疗后1、24 h,观察组分别有2、3只闭塞冠状动脉再通,对照组无闭塞冠状动脉再通。观察组治疗后1、24 h局部心肌平均声强度明显明显高于治疗前(P均<0.05),对照组治疗后1、24 h与治疗前比较无明显变化(P均>0.05);观察组治疗后1、24 h局部心肌平均声强度均高于对照组同时间点(P均<0.05)。与治疗前比较,两组治疗后1 h ST段抬高值均降低(P均<0.05),但两组治疗后1 h ST段抬高值比较差异无统计学意义(P均>0.05)。结论三维超声联合静脉滴注微泡有利于AMI猪的闭塞冠状动脉再通,并可增加其心肌灌注、改善心肌微循环。
关键词(KeyWords): 急性心肌梗死;三维超声;微泡;脉冲;空化效应;冠状动脉;微循环;猪
基金项目(Foundation): 国家自然科学基金青年基金资助项目(81101064);; 广东省自然科学基金杰出青年基金资助项目(2016A030306028);广东省自然科学基金资助项目(2015A030313305);; 广州市科技计划珠江科技新星(201506010021)
作者(Author): 冯骞;杨莉;邱世锋;吴赛珠;郑华;吴爵非;
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