s the prognosis of subdural hematoma ?

Question:

the hematoma is as a result of ruptured dural arterio venous fistula

Answers:
i don't know how to begin answering this... you seem to know a little bit about anatomy or at least a doctor told you something. however it doesn't matter much where the blood comes from as where it ends up.

maybe you know about the blood/brain barrier, or BBB? it is sort of a shield membrane (surrounding blood vessels near the brain) which prevents certain things from coming into contact with neurons. the fluid in your brain is cerebro-spinal fluid (commonly abbreviated CSF), much like blood plasma... water, salts, glucose, selected proteins or amino acids... the BBB is permeable to some drugs but not all. interestingly, it is not permeable to some things which occur naturally in your body. red blood cells are one of the things that gets filtered out. if i remember correctly, it is the heme-group of red blood cells that is neurotoxic, therefore filtered by the BBB. for all practical purposes, neurons do not regenerate. but, especially in young brains, increased growth of fibers such as dendrites and axons from other cells can help compensate.

the dura mater is one of several layers covering the brain. it may be considered the outermost layer, if you don't count the skull. it is pretty tough and has a rich blood supply. it takes a pretty severe injury to cause bleeding in this area, and a subdural hematoma requires immediate attention. when you say "subdural hematoma" you are referring to pools of blood beneath the dura mater.

i can't tell you the exact prognosis because it depends on the location of the injury, the extent of the bleeding, the age of the victim, how it was treated as well as how fast, etc. a large bleed may be neurotoxic to a large area of cortex, and it is especially dangerous because pressure can build up which causes damage of its own. a person can become permanently blind, experience seizures, go into a coma, die, etc.

let me just say this. a subdural hematoma is never good. but things look better for people who are treated quickly (with surgery if necessary), people with a very small site of bleeding, and young people.

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s the prognosis of subdural hematoma ?

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