Also known as: DKA
Miss Sampson is in DKA and Doug fails to track her phosphate levels, leading Dr. Cox to use this as an example of a 'kill' when Doug neglects her into a coma.
Also known as: Fluid around the heart
Mr. Daniels has fluid gathered near his heart requiring a pericardiocentesis. J.D. initially backs out of the procedure due to fear of making a fatal mistake, but ultimately performs it successfully.
Also known as: Heart valve damage
Mr. Phillips, a recovering heroin addict, has a damaged heart valve requiring replacement surgery. An ethics committee must decide whether to approve the surgery given his addiction history. He ultimately receives the valve but subsequently misses rehab appointments.
Also known as: Heroin addiction
Mr. Phillips has been on and off heroin for eight years with six rehab attempts. His addiction history becomes central to the ethics committee's debate about whether he should receive heart valve surgery, and he relapses by missing rehab appointments post-surgery.
Also known as: Heart valve infection
Dr. Cox falsely tells J.D. that Mrs. Carter died from endocarditis that he missed by not getting blood cultures, as a way to relieve J.D.'s anxiety about not having killed a patient yet. Later revealed to be a lie.
Also known as: Schizoaffective disorder
Molly mentions needing to see a schizophrenic patient during a conversation with Elliot, demonstrating the routine psychiatric caseload at the hospital.