Brief Answer: Coronary angiogram Detailed Answer: Dear sir Welcome to healthcare magic Microvascular changes in the coronary arteries is characterized by variable degrees of blocks in the arteries. The main reason for angina is blocks in the coronary arteries due to atherosclerosis. As per now there is no permanent cure for it. But you can slow down or stop the progression of blockage and you can stabilize the blockage so that it will not rupture and cause infarction. The gold standard investigation is coronary angiogram and the gold standard treatment is by pass surgery or stenting. It depends upon the degree of blockage. The natural remedy is to lower the lipid levels by having food like oats. Regular non stressful walk and low fat diet. Consult your doctor and start prophylactically statin therapy with antioxidants. It will stabilize the blocks. Sub lingual nitrates will relieve the anginal Pain Hope information is helpful Thanks

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