…When coronary artery blood flow is temporarily interrupted, blood vessels expand and thereafter blood flow increases (reactive hyperemia). Congenital abnormalities of the coronary arteries include coronary arteriovenous fistulas, in which blood flows directly from the coronary artery to the veins, and malformations in which the coronary artery branches off from the pulmonary artery. In children, coronary arteritis due to Kawasaki disease occurs, and in middle-aged people, stenosis or blockage (thrombosis) of the coronary arteries occurs due to coronary arteriosclerosis, which can lead to ischemic diseases such as angina pectoris and myocardial infarction. … *Some of the terminology that refers to "coronary arteriovenous fistula" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…一時的に冠状動脈血流が途絶すると,その後血管の拡張による血流増加(反応性充血)が起こる。 冠状動脈には先天性の異常として,冠状動脈から血流が直接静脈に流れる冠状動静脈瘻(ろう)や肺動脈から冠状動脈が分枝する奇形がある。子どもでは川崎病の冠状動脈炎,中年以後では冠状動脈硬化による冠状動脈の狭窄や閉塞(血栓)が起こり,狭心症や心筋梗塞など虚血性疾患の原因となる。… ※「冠状動静脈瘻」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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