Wu X
Fu Wai Hospital, Chinese Academy of Medical Sciences, Beijing.
Zhonghua Bing Li Xue Za Zhi. 1990 Mar;19(1):26-8.
The main portion of left coronary artery is located close to the beginning of its anterior descending branch, which is intimately correlated with blood supply to the heart muscle. In this paper, 128 necropsy cases were collected and analysed for detecting the incidence of atherosclerotic plaques and the relationship between the left main portion and the other three main branches of the coronary artery. From the data collected, the atheromatous plaques at the left main portion was 16.4%. The morbidity was 95.2% at the anterior descending branch, and 100% at the right circumflex branch. Besides, the incidence of acute transmural myocardial infarction was also lower than that of the old myocardial infarction obtained in those cases with atheromatous lesion of 3rd degree occlusion at the left main portion of the coronary artery. Anyhow, no obvious difference was found about the complications of myocardial infarction between the left main portion, and the other three main branches. Additionally, thrombi were present in three other branches in 66 cases, but none was detected in the left main portion of the coronary artery. The cause is still remaining to be clarified.
左冠状动脉主干部分靠近其前降支起始处，这与心肌的血液供应密切相关。本文收集并分析了128例尸检病例，以检测动脉粥样硬化斑块的发生率以及冠状动脉左主干部分与其他三个主要分支之间的关系。从收集的数据来看，左主干部分的动脉粥样斑块发生率为16.4%。前降支的发病率为95.2%，右回旋支为100%。此外，在冠状动脉左主干部分出现3级闭塞性动脉粥样病变的病例中，急性透壁性心肌梗死的发生率也低于陈旧性心肌梗死。无论如何，在左主干部分与其他三个主要分支之间，心肌梗死并发症方面未发现明显差异。另外，66例其他三个分支中存在血栓，但冠状动脉左主干部分未检测到血栓。其原因仍有待阐明。
