What is the primary consequence of a subarachnoid hemorrhage?

The primary consequence of a subarachnoid hemorrhage is increased intracranial pressure. When a hemorrhage occurs in the subarachnoid space, blood spills into this area, which is normally filled with cerebrospinal fluid (CSF). This accumulation of blood can create additional pressure on the brain, leading to a rise in intracranial pressure.

Increased intracranial pressure can result in various neurological symptoms and can further complicate the patient’s condition, leading to conditions such as herniation, brain damage, or even death if not managed promptly. While permanent disability, deadly strokes, and seizures are potential complications associated with subarachnoid hemorrhage, they are typically secondary effects that can occur due to the primary issue of increased pressure on the brain. Therefore, managing increased intracranial pressure is crucial in the acute setting of a subarachnoid hemorrhage to prevent these severe outcomes.