Thelansis

  Stable angina, or typical angina or angina pectoris, is a symptom of myocardial ischemia, characterized by chest discomfort or anginal equivalent triggered by exertion and relieved at rest or with nitroglycerin. This symptom arises from a supply-demand mismatch, where myocardial oxygen demand momentarily surpasses supply, often manifesting symptoms. The primary cause of stable angina is coronary artery stenosis, most frequently experienced during or after exercise, particularly in individuals with atherosclerosis. This condition leads to inadequate blood and oxygen delivery to actively respiring myocardial tissue, causing ischemia without myocardial necrosis, reflected in mostly normal biomarkers in blood. However, cardiac troponin release can aid in risk assessment. Chronic stable angina, recurring at a fixed rate-pressure product, contrasts with unstable and variant angina. Variant angina, or Prinzmetal angina, stems from coronary artery vasospasm, potentially leading to infa...