Question 1

what is the difference between arachnoid and sub arachnoid?

Accepted Answer

Brain membranes: There are 3 layers of coverings on the brain & spinal cord.  The outermost is the dura mater; middle one is called "arachnoid, " and the innermost (lying directly on the brain & spinal cord) is the pia mater.  "subarachnoid" means in the space beneath the arachnoid membrane, yet above the pia mater.  There can be bleeding in the subarachnoid space, due to damaged blood vessels or aneurysms.

Question 2

what is a sub arachnoid haemorrhage and a subdural haemorrhage?

Accepted Answer

Described below: A subarachnoid hemorrhage is an arterial bleed usually from the rupture of a saccular aneurysm, though it can be traumatic. Blood accumulates over the surface of the brain and a fine covering called the pia-arachnoid. A subdural hemorrhage is a venous bleed from bridging veins . It occurs between the inner lining of the skull and the tough covering of the brain called dura. Both a dangerous.

Question 3

could you please tell me what a sub arachnoid haemorrhage and a subdural haemorrhage is?

Accepted Answer

Location of bleed: SAH is on the surface of the brain and spreads like a thin film, often associated with headache, severe.. SDH is an actual clot forming under the protective layer of the brain, the dura. It expands and pushes on the brain and can result in death in some instances if not treated surgically. Not all require surgery however, depends on neuro symptoms.

Question 4

please explain why is a post operative patient under sub arachnoid block anesthesia positioned flat on bed for 8 hours?

Accepted Answer

Spinal headache: The reason why patients are kept in the lying down position after subarachnoid block or spinal anesthesia is to decrease the chance of developing a post dural puncture headache or commonly known as a spinal headache. There is a hole made from the introduction of the spinal needle  through the dura and into the subarachnoid space to deposit the medication there to accomplish a spinal block.

Question 5

is it safe use only opioid for sub arachnoid block agent?

Accepted Answer

Spinal opioid: We use opioids in the epidural or the spinal space (sub arachnoid space) for acute pain management  to help patients recover from post surgical pain and for chronic pain.  It has side effects like slowing breathing and causing itching, but it is safe if you are monitored properly.  It offers the benefit of great pain control.  Good luck.

Question 6

i suffered a traumatic sub arachnoid hemorrhage fallowing a fall in april 2006, i am suffering problems still?

Accepted Answer

Subarachnoid hemorrh: Damage is done around the time of trauma.  After this amount of time, you should not expect new damage to be taking place.  You may still be having problems caused by the brain injury, but do not expect new ones.

Question 7

had a sub arachnoid  hemorrhage  in dec 2010 with a coil embolization  in 2014 i had begun to periodically  pass out last time was for nearly 3 hours?

Accepted Answer

LOC after SAH: Can be due to seizure or problems unrelated to brain injury (cardiac syncope) The starting point would be an EEG and perhaps a cardiac holter monitor.

Question 8

do the arachnoid villi heal after a subarachnoid hemorrhage? or is hydrocephalus permanent? or is it unknown?

Accepted Answer

Points of interest: A subarachnoid hemorrhage is a not uncommon cause of normal pressure hydrocephalus, and has to do with deposition of debris affecting circulation of cerebral spinal fluid.  Unfortunately, this is NOT a process which either heals spontaneously or reverses on its own, and a shunt may well be the best answer.

Question 9

my mri report said redemonstrated is prominent csf space in the superior posterior fossa, unchanged. it is favored that this represents prominent subarachnoid space/normal variation rather than an arachnoid cyst.what does that mean?

Accepted Answer

: Translation= the person assessing the study says its normal

Question 10

...prominent csf space in the superior posterior fossa, unchanged. it is favored that this represents prominent subarachnoid space/normal variation rather than an arachnoid cyst. is this mega cistern magna? extra fluid? from a head injury?

Accepted Answer

: Radiologists prefer to write up detail that confirms they have studied the films, They get criticized when they just say "normal" or "unchanged from previous studies". I suspect it just documents a normal variant than is nothing more,

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Doctor answers about:

Sub arachnoid haemorraghe

A member asked:

What is the difference between arachnoid and sub arachnoid?

A member asked:

What is a sub arachnoid haemorrhage and a subdural haemorrhage?

A member asked:

Could you please tell me what a sub arachnoid haemorrhage and a subdural haemorrhage is?

A member asked:

Please explain why is a post operative patient under sub arachnoid block anesthesia positioned flat on bed for 8 hours?

A member asked:

Is it safe use only opioid for sub arachnoid block agent?

A member asked:

I suffered a traumatic sub arachnoid hemorrhage fallowing a fall in april 2006, i am suffering problems still?

A member asked:

Had a sub arachnoid hemorrhage in dec 2010 with a coil embolization in 2014 i had begun to periodically pass out last time was for nearly 3 hours?

A member asked:

Do the arachnoid villi heal after a subarachnoid hemorrhage? or is hydrocephalus permanent? or is it unknown?

A member asked:

My mri report said redemonstrated is prominent csf space in the superior posterior fossa, unchanged. it is favored that this represents prominent subarachnoid space/normal variation rather than an arachnoid cyst.what does that mean?

A member asked:

...prominent csf space in the superior posterior fossa, unchanged. it is favored that this represents prominent subarachnoid space/normal variation rather than an arachnoid cyst. is this mega cistern magna? extra fluid? from a head injury?

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