Latest revision as of 11:43, 8 March 2024
Information about message (contribute ) This message has no documentation.
If you know where or how this message is used, you can help other translators by adding documentation to this message.
Message definition (Atheroma ) ==Mechanism== The healthy epicardial coronary artery consists of three layers, the [[tunica intima]], media, and [[adventitia]]. Atheroma and changes in the artery wall usually result in small [[aneurysm]]s (enlargements) just large enough to compensate for the extra wall thickness with no change in the lumen diameter. However, eventually, typically as a result of rupture of [[vulnerable plaque]]s and clots within the lumen over the plaque, [[stenosis]] (narrowing) of the vessel develops in some areas. Less frequently, the artery enlarges so much that a gross aneurysmal enlargement of the artery results. All three results are often observed, at different locations, within the same individual.
メカニズム
健康な心外膜冠動脈は内膜 、中膜、外膜 の3層からなる。アテロームと動脈壁の変化は通常、内腔の直径に変化はなく、余分な壁の厚さを補うのに十分な大きさの小さな動脈瘤 (拡大)をもたらす。しかし、最終的には、典型的には脆弱プラーク の破裂やプラーク上の内腔内の血栓の結果として、血管の狭窄 (狭窄)が一部の領域で生じる。頻度は少ないが、動脈が非常に拡大し、その結果、動脈が肉眼的に動脈瘤状に拡大する。この3つの結果は、同一人物内で異なる部位で観察されることが多い。