…Effort angina is sometimes called secondary angina because the trigger is clear, with attacks caused by mental or physical stress. (2) Rest angina, unlike exertional angina, has no obvious trigger and occurs during rest or sleep without physical or mental stress, so it is also called spontaneous angina, meaning it occurs naturally, or primary angina, meaning the cause is unclear. A typical example is variant angina, which is characterized by a temporary interruption of blood flow in part of the coronary artery due to pathological spasm (constriction) of the coronary artery, causing severe ischemia in the entire layer of the myocardium in that perfusion area, and a transient ST elevation is seen on the electrocardiogram derived from that area. … *Some of the terminology that mentions "rest angina" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…労作狭心症は,精神的・肉体的負荷によって発作が起こり誘因が明らかなことから二次性狭心症と呼ばれる場合もある。(2)安静狭心症rest anginaは,労作狭心症と異なり誘因が明らかでなく,肉体的・精神的に負担のない安静中または睡眠中に起こるので,自然に起こるという意味で自発狭心症,または原因がはっきりしないという意味で一次性狭心症とも呼ばれる。その典型的なものが異型狭心症で,冠状動脈の病的なスパズム(攣縮)によって冠状動脈の一部の血流が一時的に途絶し,その灌流域の心筋の全層に著しい虚血が生じ,その部分から誘導される心電図でSTの一過性上昇がみられるのが特徴である。… ※「rest angina」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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