Rapid catastrophic neurologic deterioration following large Lumboperitoneal shunt adjustment in a patient with IIH

The authors aim to highlight the potential for rapid neurologic deterioration following adjustments to lumboperitoneal (LP) shunts in patients with idiopathic intracranial hypertension (IIH). They present a case of fatal cerebral and cerebellar herniation after a large shunt valve adjustment, emphasizing the need for emergency physicians to maintain a high index of suspicion for neurologic complications, even when initial imaging appears normal. The study underscores the importance of understanding LP shunt failure complications in emergency settings.