Help with this bad situation please!!?

okay well my grandfather is 74 years old and he had a stroke about 2 months ago.well the doctor at our local hospitle said he was okay and gave him some asprin. well my dad had started realizing that my grandpa was having very short breath one day as they were fishing. so the next monday my grandfather went to the doctor and the doctor told him at sometime he had a mive heart attack. so they sent him to a heart hospitle in the city.so ever since i was born my grandfather has been the healthiest person in our family.but lately he has not. well the heart attack affected his heart,liver,stomach,and kidney's. well they have him in intensive care. and i can honestly say i am scared to death. me and granfather are very close and he is my hero. and it hurts to see him like that.they have him hooked up to all these machines. and it really does scare me. i keep trhinking what will happen to my grandmother if something goes wrong (although i pray that it dont). i honestly have no clue how i can go see him again. the first time i attempted to my dad came with me. and after about 20 seconds beside him i broke into tears, well then that made my dad cry also.so i told my granddad that i loved him and that i wanted him to get better. they have him sedated where he can not speak to us, because his heart is so weak. is there anyway i can cope with this and go see him???