rebleeding
Recurrent hemorrhage from a previously ruptured vascular lesion, particularly aneurysms or arteriovenous malformations.
Full Definition
Rebleeding refers to the occurrence of a second hemorrhagic event from the same vascular lesion that caused an initial intracranial hemorrhage, most commonly seen with ruptured cerebral aneurysms. This complication typically occurs within the first 24-72 hours after the initial rupture and carries a significantly higher mortality and morbidity risk than the original bleeding episode. The risk of rebleeding is highest in untreated aneurysms and decreases substantially once the aneurysm is secured through surgical clipping or endovascular coiling. Prevention involves early definitive treatment when feasible, blood pressure control, and avoidance of anticoagulation. Clinical presentation may include sudden neurological deterioration, worsening headache, or loss of consciousness, requiring immediate imaging and neurosurgical intervention.
Usage
Usage note: Commonly hyphenated; critical complication requiring urgent documentation.
In Context
- "The patient experienced rebleeding from the anterior communicating artery aneurysm twelve hours post-admission." — Neurosurgical consultation
- "Early aneurysm coiling was performed to prevent rebleeding complications." — Procedural note