Hi, My Dad Recently Got Paralyzed From Right Side Of

Hi, my dad recently got paralyzed from right side of d body it happened 2 months ago...he was still recovering when he started smoking & stopped using medicine due to ayurvedic treatment...suddenly 2 days ago he had stroke again & is in coma presently. He is also a heart patient underwent a bypass 4 yrs ago. How many days does a patient remains in coma when he suffers paralysis stroke , what are d chances of recovery ???