effort angina

…Variant angina is usually vasospastic angina caused by strong contraction of the coronary arteries. (1) Effort angina is the most classic type of angina, and attacks are triggered by work or excitement. Physical or mental stress causes stress on the heart, such as increased blood pressure, increased ventricular wall tension, and increased heart rate, which increases the myocardial oxygen demand. Since there is not a sufficient increase in coronary artery blood flow to match this, the myocardium becomes oxygen deficient and an angina attack occurs. However, when the stress on the heart is reduced, the myocardial oxygen demand returns to normal within a few minutes, the supply and demand of oxygen is restored, and the attack subsides. …

*Some of the terminology that mentions "effort angina" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…異型狭心症は通常，冠動脈の強い収縮によって起こる冠攣縮（れんしゅく）性狭心症である。(1)労作狭心症effort anginaは最も古典的な狭心症であり，労働や興奮を誘因として発作が起こるものである。肉体的または精神的負荷をきっかけにして心臓に血圧上昇，心室壁緊張増大，心拍数の増加などの負担がかかり，心筋の酸素需要量が増大し，それに見合うだけの冠状動脈血流量の十分な増加がないために，心筋が酸素不足に陥って狭心発作となるが，心臓の負担が軽減すると心筋の酸素需要が数分で元に戻り，酸素の需給も回復して発作が収まる。…

※「effort 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