Angiography report of dad lm- nor lad- proximal seg 90% stenois lcx- distal diseased. ostial total occlu. rca- domi, prox total advice cabg?

See Below: From very limited info it seems reasonable. Discuss with his cardiologists.

Sounds reasonable: Obviously many factors need to be considered, but the anatomy you are describing would be difficult to approach with stents. Other factors such as age, frailty, and other medical conditions play a significant role as well. Each decision should be individualized based on his situation.