Also known as: Heart attack
Pete suffers an acute myocardial infarction at home while alone with his son Lucas. He is found unconscious by Cooper, requires multiple resuscitations, and undergoes emergency quadruple bypass surgery. The episode centers on his life-threatening cardiac event and the team's efforts to save him.
Also known as: Brain bleed
During Pete's cardiac surgery, he develops an arterial bleed in his brain causing facial droop and slurred speech. Amelia performs an emergency craniotomy to clip the bleed while Pete is still on bypass from his cardiac surgery.
Also known as: Tear in heart artery
During cardiac catheterization, the catheter dissects Pete's coronary artery causing bleeding into his chest, necessitating emergency bypass surgery.
A mother with twins at home goes into early labor with triplets. Addison manages her case overnight at the hospital while waiting for her to dilate.
Also known as: OHSS
Jake Reilly mentions treating a patient who was loaded up with HCG by another fertility doctor and nearly ruptured her ovaries, requiring hospitalization and monitoring.
Also known as: Cut
Amelia cuts her hand while intoxicated and requires sutures. This injury to her surgeon hand occurs while she is struggling with substance abuse and creates concern about her ability to perform emergency neurosurgery on Pete.
Also known as: Intimate partner violence
Joanna reveals to Violet at the airport that her husband David hit her during their recent fight. Violet counsels her about the serious nature of domestic violence and encourages her to seek help rather than return home immediately.