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subarachnoid hemorrhage

Bleeding into the fluid-filled space between the two inner layers of tissue that cover the brain.

sub-uh-RAK-noyd HEM-er-ij noun

Word parts

sub- underarachn/o spider (the web-like arachnoid layer)-oid like

What it means

A type of bleeding stroke. Blood collects in the subarachnoid space, which holds the fluid that cushions the brain. Most cases not caused by injury come from a burst brain aneurysm, a weak, ballooning spot on an artery. Head injury is another common cause. The blood irritates the brain and raises the pressure inside the skull.

For the nurse

Check neuro status often (level of consciousness, pupils, movement) and report any change at once. Keep the room quiet and dim, keep the head of the bed raised as ordered, control blood pressure as ordered and keep the client from straining.

At a glance

AbbreviationsSAH
Spanishhemorragia subaracnoidea
Also writtenSAH, subarachnoid hemorrhages

Related terms

hemorrhage

A large loss of blood from a blood vessel, inside the body or out of it.

intracranial pressure

The pressure inside the skull, made by the brain, the blood and the fluid around the brain.

lumbar puncture

A procedure in which a needle is put between two bones in the lower back to take out spinal fluid or give medicine; a spinal tap.

Glasgow Coma Scale

A scoring tool that rates a person's level of consciousness by their eye opening, verbal response and movement, from 3 to 15.

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