Delayed Cerebral Ischemia
Also written as: DCI — Delayed Cerebral Ischemia
A secondary complication following subarachnoid hemorrhage characterized by new neurological deficits or radiographic evidence of ischemia.
Full Definition
Delayed Cerebral Ischemia (DCI) occurs 4-21 days after aneurysmal subarachnoid hemorrhage and represents a major cause of morbidity and mortality. It manifests as new focal neurological deficits, decrease in level of consciousness, or new cerebral infarction on imaging that cannot be attributed to other causes. DCI is distinguished from vasospasm, as it encompasses both vasospastic and non-vasospastic mechanisms of delayed brain injury. Early recognition and aggressive management are crucial for optimizing patient outcomes.
Usage
Usage note: Preferred term over 'delayed ischemic neurological deficit' in current literature.
In Context
- "The development of delayed cerebral ischemia on post-bleed day 7 prompted immediate intervention with induced hypertension." — Neurocritical care progress note