Hello. Thank you for asking on HCM. I carefully read your query and understood your concern. 
Now, as I can understand, without seeing the angiogram film, I can say that this is a two-vessel coronary 
artery disease, and one of them is totally blocked. If these blockages are a good target for 
stent implantation, from an invasive cardiologist point of view, I would stent them both. The strategy may had been different, because the protocol is that if a patient presents to a hospital with an 
acute myocardial infarction, then only the total blockage that caused the infarction is stented at that time, and other blockages remain to be stented in an another moment, i.e. after two to four weeks. On the other hand, coronary artery bypass grafting (CABG) is recommended when the 
angioplasty cannot be done due to technical difficulty and/or if the blockages are in such areas of the coronary artery, that benefit less from stenting, and put the patient in an increased risk. My opinion is that these blockages should be treated with angioplasty and stent, for less risk, better clinical outcomes and slightly better results in lifelong terms, in comparison to CABG. 
I hope this helps you make the decision. Take care and good luck. 
Regards, 
Dr. Meriton