Tobias S L, Videlefsky S W, Misra V K
Division of Cardiology, Veterans Administration Medical Center, Nashville, Tennessee, USA.
Cathet Cardiovasc Diagn. 1995 Jun;35(2):127-30. doi: 10.1002/ccd.1810350209.
The angiographic incidence of intramyocardial bridging (MB) is 0.7-4.5% [Angelini et al.: Prog Cardiovasc Dis 25:75-88, 1983]. Morphological and physiological patterns of MB have recently been described, observing coronary flow velocity patterns, intravascular ultrasound, and angiography [Flynn et al.: Cathet Cardiovasc Diagn 32:36-39, 1994; Ge et al.: Circ Res 89:1725-1732, 1994]. We describe a reversal of the normal flow velocity characteristics within a MB, due to a hemodynamically significant stenosis in the proximal left anterior descending artery (LAD). After successful percutaneous transluminal coronary angioplasty (PTCA) of the proximal LAD stenosis, there was normalization of the flow velocity pattern within the MB and the appearance of a spike and dome pattern distal to the MB.
心肌桥（MB）的血管造影发生率为0.7%-4.5%[安杰利尼等人：《心血管病进展》25:75-88，1983年]。最近对MB的形态学和生理学模式进行了描述，观察了冠状动脉血流速度模式、血管内超声和血管造影[弗林等人：《心导管与心血管诊断》32:36-39，1994年；葛等人：《循环研究》89:1725-1732，1994年]。我们描述了由于左前降支近端（LAD）存在血流动力学显著狭窄，导致心肌桥内正常血流速度特征发生逆转。在成功对LAD近端狭窄进行经皮腔内冠状动脉成形术（PTCA）后，心肌桥内的血流速度模式恢复正常，且在心肌桥远端出现了尖峰和圆顶模式。
