Posibleng Mga Sanhi para sa Unstable Angina Diabetes Mellitus Congestive Heart Failure Malalang Intoxication sa Amphetamine Crack Ingestion Pulmonary Edema Cardiomyopathy Coronary Atherosclerosis Myocardial Infarction Malalang Coronary Syndrome Cor Pulmonale Hyperthyroidism Unstable Angina Aortic Valve Stenosis Variant Angina Pectoris Mitral Valve Prolapse Pulmonary Hypertension Bara sa Puso Amyloidosis Hyperlipidemia Cocaine Abuse Chronic na Pananakit Chronic na Sakit Namamanang Sakit Pagkalason sa Iodide