Journal of the American College of Surgeons
-
Review Case Reports
Perioperative risk factors for posterior ischemic optic neuropathy.
Infarction of the optic nerve posterior to the lamina cribrosa, called posterior ischemic optic neuropathy (PION), is a condition that can result in profound bilateral blindness. Cases of PION treated at this institution and those described in the literature were analyzed to identify clinical features that profile those individuals at risk of PION in an attempt to identify major contributing factors that could be addressed prophylactically to enable effective prevention. ⋯ Middle-aged men undergoing spine surgery with prolonged intraoperative hypotension and postoperative anemia and facial swelling are at risk of developing PION from hypovolemic hypotension. Avoiding or immediately correcting these contributory factors can reduce the incidence of PION.
-
This article discusses the largest and longest experience reported to date of the use of portal-systemic shunt (PSS) to treat recurrent bleeding from esophagogastric varices caused by extrahepatic portal hypertension associated with portal vein thrombosis (PVT). ⋯ PSS is the only consistently effective therapy for bleeding esophagogastric varices from PVT and extrahepatic portal hypertension, resulting in many years of survival, freedom from recurrent bleeding, normal liver function, and no encephalopathy.