Also known as: NPH
Dr. Singer, Izzie's former high school science teacher, was misdiagnosed with Alzheimer's/dementia but actually has normal pressure hydrocephalus causing confusion and falls. The condition is central to the episode as Izzie brings him to Seattle Grace for diagnosis and treatment, and Derek performs a shunt placement surgery.
Also known as: ALCAPA
Eight-year-old Casey presents with apparent asthma that is actually cardiac asthma caused by ALCAPA. Teddy diagnoses the condition and performs a Takeuchi repair with Cristina, serving as a teaching case that demonstrates Teddy's diagnostic skills and surgical expertise.
Also known as: Heart attack
Gary Clark presents with ST elevation indicating an anterior heart attack with LAD blockage. Teddy performs an angioplasty while teaching Cristina and Jackson, demonstrating modern cardiac catheterization techniques.
Also known as: Irregular heart rhythm
An elderly female patient requires a transvenous pacemaker for sick sinus syndrome. The case highlights Teddy's limited recent experience with non-combat medicine when she admits she hasn't done the procedure in ten years.
Also known as: Lacerated bile duct
Chief Webber accidentally clips a patient's common bile duct during an emergency cholecystectomy, causing severe jaundice. Bailey discovers the complication and the Chief must perform a repair, highlighting his distracted state and foreshadowing his decision to step back from surgery.