Also known as: Conjoined twins joined at the head
Twin sisters aged 25 who share brain matter and a sagittal sinus undergo complex surgical separation. During surgery, Liz develops a cerebral clot that spreads, requiring emergency separation and resulting in her death while Annie survives.
Also known as: CHF
Liz's heart is doing more work than Annie's due to their shared circulatory system, causing high-output cardiac failure that threatens both twins' lives and necessitates the separation surgery.
Also known as: Blood clot in the brain
During the separation surgery, Liz develops a propagating blood clot in her brain tissue that spreads medially toward the sagittal sinus, threatening both twins and ultimately causing Liz's death despite attempts to retrieve the clot.
Also known as: Immune deficiency disorder
Infant patient with no immune system who grew over 500 T-cells overnight after receiving experimental enzyme replacement therapy, suggesting Dr. Bailey may have administered deactivated virus treatment against parents' wishes.
Also known as: Torn blood vessel in the chest
Patient requiring central line placement developed perforation of the posterior wall of the subclavian vein when Wilson attempted to forcefully remove a snagged guide wire, requiring emergency venous repair surgery and postponement of her scheduled colectomy.
Also known as: Damaged heart valve
Patient in Zurich with irregularly shaped aortic valve undergoes transcatheter aortic valve replacement using Burke's new holographic heart visualization technology during Cristina's visit.
Also known as: Heart failure
Sabine's children are recovering from cardiac conditions - Link is on the transplant list waiting for a heart, and Ivy is stable enough to be discharged home after their sibling Frankie's recent death.