Hamamoto Masaki, Furukawa Tomokuni
Department of Cardiovascular Surgery, JA Onomichi Genaral Hospital, Onomichi, Japan.
Kyobu Geka. 2011 Aug;64(9):823-7.
An 80-year-old woman was transferred to our hospital with sudden onset of chest pain. Electorocardiogram (ECG) showed ST-segment elevation of VI-V3 and aV(L) leads suggestive of acute coronary syndrome. On emergent coronary angiography, left main trunk (LMT) was externally compressed only at diastolic phase, showing acute type A aortic dissection involving the left coronary artery. A bare metal stent was promptly implanted to LMT to restore coronary blood flow because of her hemodynamic instability. Soon after this procedure, ischemic changes disappeared on ECG and she was transferred to the operating room in stable hemodynamic condition without chest discomfort. Emergent graft replacement of ascending aorta and proximal portion of transverse arch was successfully performed. As the bare metal stent had been properly implanted at the LMT and weaning from cardiopulmonary bypass was uneventful regardless of decreased left ventricular wall motion of anteroseptal area, coronary artery bypass grafting was not performed. A "bridge to surgery" use of coronary stenting was very effective as a life saving procedure for the patients with acute aortic dissection involving the left coronary artery.
一名80岁女性因突发胸痛被转送至我院。心电图(ECG)显示V1-V3导联及aVL导联ST段抬高,提示急性冠状动脉综合征。急诊冠状动脉造影显示,仅在舒张期左主干(LMT)受到外部压迫,提示累及左冠状动脉的急性A型主动脉夹层。由于患者血流动力学不稳定,遂立即在左主干植入裸金属支架以恢复冠状动脉血流。该操作后不久,心电图上的缺血改变消失,患者血流动力学稳定,无胸痛不适,被转至手术室。成功进行了升主动脉及横弓近端的急诊血管移植术。由于裸金属支架已正确植入左主干,且尽管前间隔区域左心室壁运动减弱,但体外循环撤离过程顺利,因此未进行冠状动脉旁路移植术。对于累及左冠状动脉的急性主动脉夹层患者,冠状动脉支架置入术作为“手术桥梁”的应用是一种非常有效的挽救生命的方法。