EXCLUSIVE
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angina word block white chest pain ischemic heart disease cardiac coronary artery stable unstable variant microvascular pectoris myocardial ischemia silent cardiogenic chronic acute syndrome prinzmetal attack warning discomfort infarction cardiovascular conditions nitroglycerin symptoms exertional atherosclerosis heart-related stress-induced treatment health unpredictable spasm blockage tightness relief management vasospasm medications blood flow oxygen demand