Inaba Shinji, Okayama Hideki, Higashi Haruhiko, Nishimura Kazuhisa, Inoue Katsuji, Ogimoto Akiyoshi, Higaki Jitsuo
Division of Cardiology, Department of Integrated Medicine and Informatics, Ehime University Graduate School of Medicine, Toon, Ehime, Japan.
Eur J Echocardiogr. 2011 Mar;12(3):E15. doi: 10.1093/ejechocard/jeq159. Epub 2010 Oct 27.
Myocardial bridging (MB) is a congenital anomaly characterized by systolic compression of the tunnelled arterial segment. MB may cause myocardial ischaemia due to abnormal coronary blood flow. We report a case of MB in which transthoracic Doppler echocardiography was used to evaluate the long-term effect of beta-blocker therapy on abnormal coronary blood flow. In this case, beta-blocker therapy with bisoprolol (5.0 mg/day) for 1 month eliminated the patient's symptoms and normalized coronary blood flow through the tunnelled arterial segment.
心肌桥（MB）是一种先天性异常，其特征为隧道状动脉段的收缩期受压。心肌桥可能由于异常的冠状动脉血流而导致心肌缺血。我们报告一例心肌桥病例，其中经胸多普勒超声心动图用于评估β受体阻滞剂治疗对异常冠状动脉血流的长期影响。在该病例中，使用比索洛尔（5.0毫克/天）进行β受体阻滞剂治疗1个月后，消除了患者的症状，并使通过隧道状动脉段的冠状动脉血流恢复正常。
