How is my father's health Doctor?

well, We have started giving him medicine, let's see how he responds.

May my father have to undergo surgery?

Yes, he may have to undergo surgery,

but if he responds, he may not have to undergo surgery.

Well, I am unsure, but I guess he can have to undergo surgery.

after 2 hrs

Doctor : As he has not been responding for quite some time , so

he will have to undergo surgery.