Pulmonary heart disease would be my guess at whats happening to your friend. This is the medical name given to the disease where the right side of the heart fails to function properly.
you cant put a price on life but this sort of situation definatly challenges that statement. I think the family and friends should all work together to help this person out, taking out a loan would be the best idea. my guess is this sort of transplant (which would be a heart and lung transplant) would cost upwards of $80,000 because a kidney costs $50,000. and while the price tag might be huge it is nothing compared to the life of your friend. none the less it is a very sad situation and i hope you and your friend the best of luck in the future.