Help my Father to recover from a Heart attack

Dear All, My dad suffered a massive heart attack and was admitted to Osmania General Hospital, Hyderabad. They made a couple of tests and told there's valve rupture in the heart due to which pureblood is getting mixed with impure blood. They said the treatment doesn't fall under arogya sri scheme and suggested us to take to a better-equipped hospital stating it's an emergency situation. On an emergency basis, we have moved him to NIMs where doctors confirmed the valve rupture and the need for open-heart surgery. They have projected a minimum estimate of Rs 5 lakh.

I'm confused as to what to do. Praying to God, as a last resort, am making an attempt on WhatsApp and other online platforms. 

My dad struggled a lot to get my sister, brother and myself educated and run our household. I can't afford to lose him and this is the least I can do for him. 

I request you to transfer any amount that is feasible for you. I hope to see my dad again.

 I'm attaching hospital reports.