经胸超声心动图引导射频消融治疗左心室中部及左心室流出道梗阻性肥厚型心肌病1例

Chinese Journal of Interventional Imaging and Therapy(2022)

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Abstract
患者男,61岁,活动后胸闷、气短1年,发作时伴呼吸困难、头晕、乏力;既往高血压病史2年,口服厄贝沙坦,降压效果欠佳.查体:血压150/80 mmHg,心率76次/分,律齐,听诊闻及主动脉瓣区Ⅲ/Ⅵ级收缩期喷射样杂音.实验室检查:血B型脑钠肽前体(1 592 pg/ml)、肌钙蛋白Ⅰ(0.10 μg/L)升高.超声心动图:左心室壁不均匀增厚,左心室中部及左心室流出道血流速度增快,峰值流速分别为3.49 m/s及4.52 m/s,峰值压差分别为49 mmHg及82 mmHg(图1A、1B);二尖瓣口见中等量反流信号(面积6.90 cm2);左心房增大,容积指数48ml/m2;诊断为左心室中部及左心室流出道梗阻性肥厚型心肌病(hypertrophic cardiomyopathy,HCM),左心房增大,二尖瓣中度关闭不全,左心室舒张功能不全.
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