Hartz R S, Heuser R R
Illinois Masonic Medical Center, Chicago, USA.
Ann Thorac Surg. 1997 Jun;63(6):1765-6. doi: 10.1016/s0003-4975(97)00434-7.
The existence of a chest wall "steal" of blood away from the myocardium through patent internal mammary artery branches has been hypothesized as a cause of recurrent angina pectoris after coronary artery bypass grafting. Although some authors believe that such a steal is physiologically impossible because coronary flow occurs in diastole and chest wall flow in systole, we recently documented ischemia in the left anterior descending coronary artery distribution before embolization of a large left internal mammary artery first intercostal branch that had been left intact at the time of operation. After embolization of the branch, clinical and objective evidence of ischemia resolved.
通过乳腺内动脉分支窃血导致胸壁血液从心肌分流的情况，已被假定为冠状动脉旁路移植术后复发性心绞痛的一个原因。尽管一些作者认为这种窃血在生理上是不可能的，因为冠状动脉血流发生在舒张期，而胸壁血流发生在收缩期，但我们最近记录到，在栓塞一根粗大的左侧乳腺内动脉第一肋间分支（手术时该分支保持完整）之前，左前降支冠状动脉分布区域存在缺血。该分支栓塞后，缺血的临床及客观证据均消失。
