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无症状心肌缺血患者多巴酚丁胺负荷试验的左室舒张功能的定量分析 被引量:2

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摘要 目的:通过应用组织多普勒显像技术(DTI)的定量分析无症状性心肌缺血(SMI)患者与正常组多巴酚丁胺负荷试验(DSE)前后的研究,为临床早期检出SMI病症提供准确可行的诊断方法。方法:选择无症状性心肌缺血(SMI)患者与正常患者各75例,进行DSE试验,记录负荷前后的参数:各级负荷下的每一取样点的峰值舒张早期充盈速度Ve、峰值舒张晚期充盈速度Va、e峰减速时间、等容舒张时间(RIVRT)、左室射血分数(LVEF)。结果:两组在负荷前的Ve值比较无差异性(P>0.05);在RIVRT、LVEF方面两组比较差异有统计学意义(P<0.05);在负荷情况下的两组间各指标比较差异有统计学意义(P<0.05);无症状心肌缺血组各节段峰值速度随剂量逐级增大变化不大,差异无统计学意义(P>0.05);对照组正常心肌在多巴酚丁胺作用下,各节段峰值速度随剂量逐级增大而增加,差异有统计学意义(P<0.05)。结论:DTI技术与DSE结合可定量评价无症状性心肌缺血患者左室舒张功能。
出处 《医学信息(中旬刊)》 2010年第6期1409-1410,共2页 Medical Information Operations Sciences Fascicule
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