DCI
Also written as: DCI — Delayed Cerebral Ischemia
Delayed cerebral ischemia; neurological deterioration occurring days after subarachnoid hemorrhage, often due to vasospasm.
Full Definition
Delayed cerebral ischemia (DCI) is a clinical syndrome of neurological deterioration that occurs typically 4-14 days after aneurysmal subarachnoid hemorrhage. It manifests as new focal neurological deficits, decrease in consciousness, or both, and may be associated with cerebral vasospasm, though other mechanisms including microthrombosis and spreading depolarization may contribute. DCI is a major cause of morbidity and mortality in SAH patients. Diagnosis requires exclusion of other causes such as rebleeding, hydrocephalus, or metabolic disturbances. Prevention and treatment strategies include nimodipine, euvolemia maintenance, and induced hypertension.
Usage
Usage note: Specify timing relative to initial hemorrhage; distinguish from immediate complications.
In Context
- "Patient developed DCI on post-hemorrhage day 8 with new left hemiparesis." — Clinical assessment
- "Induced hypertension was initiated to treat suspected DCI following SAH." — Treatment protocol