心肌桥和壁冠状动脉的形态及相关性研究

MORPHOLOGY AND CORRELATION OF MYOCARDIAL BRIDGE AND MURAL CORONARY

探讨心肌桥和壁冠状动脉的形态及相关性,为心血管病临床提供形态依据.方法:解剖100例正常人心脏的冠状动脉,取前室间支桥下段血管(壁冠状动脉)中份及出桥段血管起始部,作石蜡切片HE染色,在计算机图像分析仪下进行观测.结果:心肌桥出现率为85%,桥宽厚各为19.14±10.49mm,1.37±0.65mm.壁冠状动脉管径较其远端血管管径小;管壁较其远端血管壁薄;其形态有圆形、椭圆形、心形、不规则形和线形.相关分析表明;心肌桥的宽度与壁冠状动脉管径呈负相关;桥的宽度和厚度与其远端血管管径呈正相关;桥的厚度与壁冠状动脉内膜呈负相关.

To explore the morphology and correlation of the myocardial bridge (MB) and mural coronary (MC) and to provide the evidence for clinical cardidogy. Method: The coronary arteries of 100 normal human hearts were selected at random. The middle part of MC over the left areterior descending arteries and the distal part of it were sliced and stained with HE. The samples were observed under LM and the computerized image analyzer. Results: MB appeared in 85% of the samples. The thickness and width of MB were 1. 37 ± 0. 65 mm and 19. 14±10. 49 mm respectively. The diameter of MC was smaller than that of the distal part; and the thickness of the blood wall was thinner than that of the distal part. They were round, ellipsoid, irregulari-ty and liner in shape. The interrelated analysis suggests that the width of MB appeared nagative interrelation compared with the diameter of MC; the width and thickness appeared positive inter-relation compared with the diameter of the distal blood vessels of MC; and the thickness of MB appeared nagative compared with thickness of the inner membrane of MC.