The most poignant one I saw was the case of a late 20's woman in the final stages of cystic fibrosis. She had an older brother and a younger sister as potential living lung donors and the surgeons were advising her and the family that her chances of surviving a transplant were minimal. She insited that for her part, even against the odds, she wanted to proceed.

The most striking part was where we saw the surgeon say to the brother,who was nominated to donate his entire lower left lung, that at any point in the consultation procedure he would just turn "them" (the TV cameras) off and provide a valid medical reason why he could not donate to save him from the procedure if required. The operation went ahead and the girl never regained conciousness.