What is the subarachnoid space?

In the central nervous system, the subarachnoid space, called the subarachnoid cavity, the area in the brain between the Arachnoid membrane, which is the center of the three membranes covering the surface of the brain, and the PIA mater, which is the deepest membrane covering the brain. Strengthening a rod similar to fibers known as fibrous trabeculaoe cross the subarachnoid space for joining the arachnoid membrane to the PIA material and cerebrospinal fluid fills the cavity so that it flows around the brain. The subarachnoid space also contains blood vessels that give the brain and spinal cord with blood and oxygen. This cavity helps to pour the brain to protect it from injury, and continues the backbone column along with the Arachnoid membrane.

In the Blood Barrier-Mozer Barrier, the subarachnoid space helps protect the brain from many infections transmitted by blood and some neurotoxins. Most viruses and some bacteria, howeverThey can pass through the barrier to combat infection. It seems that inflammation and hypertension, as well as exposure to radiation, increase the permeability of the blood -brain barrier, which may sometimes be useful in the treatment of brain infections. In the future, nanotechnology can keep the key to treating brain infections and other brain diseases, as medicines can be developed with small particles to pass through the barrier.

subarachnoid bleeding is a specific type of brain damage in which blood enters the subarachnoid space. This is usually due to the trauma of the head, cracked aneurysm or cracked arteriovenous malformation (AVM). Initial symptoms may include a sudden headache - which is generally described as the worst headache in a person's life - a stiff neck, nausea, vomiting, gastroofing urry, loss of consciousness or seizures. Complications from subarachnoid haemorrhage move from stroke to seizures and completeCe and death.

When the patient is diagnosed with subarachnoid bleeding, treatment should be immediate to ensure the best prognosis. Surgery and medicines can be used to stop bleeding, but serious bleeding bears 50 % initial mortality and those who survive are likely to experience delayed death or permanent brain damage. Risk factors for subarachnoid bleeding include head injuries, high blood pressure, use of blood thinners, previous history of aneurysm, smoking, severe use of alcohol, haemorrhagic disorders and connective tissue disorders in the body.