SAH
Also written as: SAH — Subarachnoid Hemorrhage
Subarachnoid hemorrhage; bleeding in the space between brain and skull that requires intensive monitoring.
Full Definition
Subarachnoid hemorrhage (SAH) refers to bleeding in the subarachnoid space, the area between the arachnoid membrane and pia mater surrounding the brain. Most commonly caused by ruptured cerebral aneurysms, SAH presents as sudden severe headache and can lead to complications including vasospasm, hydrocephalus, and rebleeding. In neurocritical care, SAH patients require intensive monitoring for neurological deterioration and complications. Documentation must be precise regarding onset, severity grading, and treatment protocols.
Usage
Usage note: Distinguish from other types of intracranial hemorrhage; specify aneurysmal vs traumatic when known.
In Context
- "CT angiography confirmed aneurysmal SAH with Hunt-Hess grade 3." — Radiology report
- "Patient developed delayed cerebral ischemia secondary to SAH-induced vasospasm." — Consultation note