subdural space

It is a form of empyema in the subdural space.

A subdural space is generally only present due to trauma and/or pathological situations.

Hence, the subdural space is referred to as "potential" or "artificial" space.

When the dura mater and the arachnoid separate through injury or illness, the space between them is the subdural space.

The space between the dura and the arachnoid (in both head and spine), the subdural space, is also a potential space.

Infants, too, have larger subdural spaces and are more predisposed to subdural bleeds than are young adults.

This can lead to leakage of CSF into the subdural space especially in cases with moderate to severe brain atrophy.

Subdural effusion refers to an effusion in the subdural space, usually of cerebrospinal fluid.

Electrodes can either be placed directly on brain areas of interest or can be placed in the subdural space of the brain.

Subdural hemorrhage results from tearing of the bridging veins in the subdural space between the dura and arachnoid mater.

Further, a thrombophlebitis may develop in the bridging veins that cross the subdural space, resulting in venous occlusion and infarction of the brain.

Bacterial or occasionally fungal infection of the skull bones or air sinuses can spread to the subdural space, producing a subdural empyema.

As the brain shrinks with age, the subdural space enlarges and the veins that traverse the space must travel over a wider distance, making them more vulnerable to tears.

In 1971, Dr. Norman Guthkelch proposed that whiplash injury caused subdural hemorrhage in infants by tearing the veins in the subdural space.

The life cycle of Parelaphostrongylus tenuis begins when female worms lay their eggs in blood vessels in the venous sinuses and subdural space of a white tailed deer's brain.

Usually resulting from tears in bridging veins which cross the subdural space, subdural hemorrhages may cause an increase in intracranial pressure (ICP), which can cause compression of and damage to delicate brain tissue.

The subarachnoid or subdural spaces between the internal and external sheaths of the optic nerve are now referred to as "Schwalbe's spaces"; also called the intervaginal spaces of optic nerve (spatia intervaginalia nervi optici).

A tear between the dura and the arachnoid membranes, called a CSF fistula, can cause CSF to leak out of the subarachnoid space into the subdural space; this is called a subdural hygroma.

As a needle is advanced through the ligamentum flavum, to the epidural space, with constant pressure applied to the piston of a syringe, loss of resistance occurs once the needle enters the subdural space due to the change in pressure.

Acquired or iatrogenic dermoids may arise from the implantation of epidermal tissue into the subdural space i.e. spinal cutaneous inclusion, during needle puncture (e.g. lumbar puncture) or during surgical procedures on closure of a dysraphic malformation.

The subdural space (or subdural cavity) is an artificial space created by the separation of the arachnoid mater from the dura mater as the result of trauma, pathologic process, or the absence of cerebrospinal fluid as seen in a cadaver.

Subdural electrodes can shift slightly and can be affected by cerebrospinal fluid in the subdural space, which could interfere with the current used to stimulate the brain from the electrodes and possibly cause shunting and dissipate the current, making the stimulation's effect less accurate.