I Have A Query Regrading My Father's Consultation With 2

i have a query regrading my father's consultation with 2 different cardiologists, since there was a history of cardio prob in his family we undertook a TMT test and he completed it properly without any problem, but the 1 st cardiologist suggested an angiogram, as my father is diabetic slightly having only 1/2 of 250 melmat a day, and after angiogram it was found that a small block on a single vessel but not on main valves, and he gave ecoaspirin and nitrocontin. then later we consulted with another cardiologist and he was of the opinion that diabetics can have silent blocks even without any cholestrol or other symptomps of pain or discomfort but he recommended only ecoaspirin and to stop nitrocontin and monitor health with TMT annually and constant monitoring of blood sugar levels. after a week we visited 1 st doctor and now he has added a third medicine concor. we are concerned whether doc1 or 2 is correct and could we avoid the extra medicines.