revealed a catastrophic rupture of an aneurysm in the right vertebral artery. This is one of the four major blood vessels that feed the brain, and this type of aneurysm can be particularly dangerous and challenging to control. Blood had leaked into the water system of the brain, clogging it and creating a condition called hydrocephalus. It put pressure on the brain that risked damaging the tissues, potentially leading to long-term neurological problems or death. To relieve the mounting pressure, the team inserted a tube into the brain, an external ventricular drain, to divert the cerebrospinal fluid. Damage Control: Repairing the Dissection ext, the team transferred Mr. Parish to the Stroke Center’s state-of-the-art Neurointerventional Suite, one of the most advanced in the country. Through a small incision in the patient’s groin, a catheter was inserted into the femoral artery. Guided by fluoroscopy—a real-time, moving image on a giant television screen—the team then threaded a series of slender catheters through the network of arteries that led into Mr. Parish’s brain. Robert Wood Johnson I MEDICINE 7