When Kelso is talking to the surgeons he claims the brain dead patient did not have a donor card. Later when the father is talking to J.D. he shows him his sons donor card.
This is actually part of the stories progression. The man doesn't want to pull the plug on his son, Turk convinces him to do it so they can donate his heart to a needy patient, thus making him a donor.
This is actually part of the stories progression. The man doesn't want to pull the plug on his son, Turk convinces him to do it so they can donate his heart to a needy patient, thus making him a donor.
When JD hides in a body bag in the elevator and startles Doug into hitting him with a fire extinguisher, Doug then clings to the extinguisher and you can clearly see it's made out of foam.
Part of the plot surrounds a family agonizing over a decision to "pull the plug" on their brain-dead son. If a patient is brain-dead, there is never a question as to whether to withdraw life support. A brain-dead patient is medically and legally dead.