MEDICAL DICTIONARY
Hemorrhage, subarachnoid: Bleeding within the head into the space between two membranes that surround the brain. The bleeding is beneath the arachnoid membrane and just above the pia mater. (The arachnoid is the middle of three membranes around the brain while the pia mater is the innermost one.)
The subarachnoid space is a potential space. It is normally filled with cerebrospinal fluid. With a subarachnoid bleed, the cerebrospinal fluid in the subarachnoid space is bloody.
Subarachnoid hemorrhages are typically acute (sudden). They may follow a head injury or rupture of a blood vessel in the central nervous system (brain and spinal cord) as, for example, because of an aneurysm in the vessel.
Nearly half of people admitted to a hospital with a subarachnoid hemorrhage die within a month. Many of the survivors are left with severe disabilities.
The first-degree relatives of patients with subarachnoid hemorrhage are more likely to develop the condition than those who do not have a family history of it. Smoking , alcohol abuse, and high blood pressure are risk factors for subarachnoid hemorrhage.
|
DISCLAIMER:
Information on this site is provided for informational
purposes and is not meant to substitute for the advice
provided by your own physician or other medical professional.
You should not use the information contained herein
for diagnosing or treating a health problem or disease,
or prescribing any medication. You should read carefully
all product packaging. Not all Canadian drugs, Canada
prescription and Canadian prescription medicine is available
at discount Canadian on line pharmacies. If you have
or suspect that you have a medical problem, promptly
contact your health care provider. Information and statements
regarding diet supplements have not been evaluated by
Health Canada and are not intended to diagnose, treat,
cure, or prevent any disease. All trade and service
marks mentioned on this site are recognized as belonging
to their respective owners.
|
|
|
|
