Factual error: Izzie tells her patient, Cheyenne and her mother, Mrs. Ward that they live in the same town she grew up in - Chehalis, Washington, yet mispronounces it. She says CH-halis (like CHurch) when it is SH-halis like Chinook Salmon.
Factual error: Derek performs CPR on Meredith in the back of the ambulance, but he does so incorrectly. He gives one breath and five compressions instead of two and thirty. Also, drowning victims need oxygen, and Derek should have used a BVM to ventilate Meredith, not mouth to mouth. Any doctor would have known how to provide proper treatment.
Throwing It All Away - S10-E15
Factual error: In the opening scenes, Arizona mistakenly says a child suffering from imminent liver failure is at risk for psoriasis, when the script called for the word cirrhosis. Psoriasis is a skin disease. Cirrhosis is the medical term for end stage liver disease.
Factual error: At the end they land at Sioux Falls Airport or "Joe Foss Field" but the shuttle says "Joe Boss Field".
