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多巴酚丁胺负荷超声心动图评价肥厚型心肌病隐匿性梗阻 被引量:2

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摘要 目的应用多巴酚丁胺负荷超声心动图(DSE)检测肥厚型心肌病左心室流出道血流速度及压力阶差,分析负荷后左心室流出道动力性梗阻的程度及其意义。方法选择静息状态下左室流出道流速及压力阶差正常27例肥厚型心肌病患者做为研究对象,分别于基础状态及不同剂量多巴酚丁胺检测量左心室流出道血流速度及压力阶差。结果DSE检查前27例患者左心室流出道血流速度均在正常范围,DSE达到峰值剂量后左心室流出道血流速度均增快,其中14例左心室流出道血流速度明显增快,大于2.7 cm/s(2.75~6.92 m/s),压力阶差大于30 mmHg(30.2~191.55 mmHg,1 mmHg=0.133 kPa)。结论DSE检测隐匿性梗阻性肥厚型心肌病患者左心室流出道压力阶差可明确有无潜在左心室流出道梗阻,对基础状态左心室流出道压差正常,心室肥厚特别在室间隔基底部明显肥厚、临床症状明显者,是明确左心室流出道隐匿性梗阻的重要手段。
出处 《齐齐哈尔医学院学报》 2010年第2期198-199,共2页 Journal of Qiqihar Medical University
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