Also known as: Torn aorta
Trevor suffers a traumatic aortic rupture from a high-speed motor vehicle crash. Despite attempting emergency intervention, his aorta completely ruptures in the elevator, leading to his death and driving the episode's central plot about the need for a hybrid OR in the ED.
Peter, a deaf patient scheduled for cochlear implant activation, is diagnosed with Usher syndrome causing both his deafness and progressive vision loss. The diagnosis creates conflict with his fiancée and becomes a major emotional storyline about his future blindness.
Also known as: Progressive blindness
The specific ophthalmologic manifestation of Peter's Usher syndrome, causing progressive deterioration of eyesight with no cure available.
Also known as: Unplanned pregnancy
Emily, Ethan's sister with a history of substance abuse, is diagnosed with an unplanned pregnancy. This creates significant conflict between Ethan and April about whether Emily is capable of having a child given her unstable history.
Also known as: Heart attack
Referenced in flashback from the previous episode, Dr. Reese's father suffered a heart attack and Dr. Charles is accused of considering letting him die. This drives Sarah's decision to leave Chicago Med.
Also known as: Cut
A machinist with a deep forearm laceration used as a teaching case for medical students, demonstrating proper wound assessment and closure technique.