Vad är pseudotumor cerebri?
Pseudotumor cerebri, även kallad idiopatisk intrakraniell hypertoni (IIH), karakteriseras av förhöjt intrakraniellt tryck, huvudvärk, och om det är allvarligt, synförlust.
What are the different types of dural venous sinuses?
Dural venous sinuses 1 Sagittal sinuses. There are two sagittal sinuses that occupy the longitudinal cerebral fissure (midline between the cerebral hemispheres ). 2 Straight sinus. 3 Sphenoparietal sinuses. 4 Cavernous sinuses. 5 Petrosal sinuses. 6 Occipital sinus. 7 Transverse sinuses. 8 Sigmoid sinus.
What is the function of the dural venous sinus?
Dural Venous Sinuses. The human brain has the highest demand for oxygen of any tissue in the human body. It receives a vast amount of blood from two systems: the internal carotid system anteriorly, and the vertebrobasilar system posteriorly.
When is dural venous sinus stenting indicated in patients with intracranial hypertension?
Background: Dural venous sinus stenting (DVSS) is an accepted treatment option in selected patients with medically refractory idiopathic intracranial hypertension and obstructive venous outflow physiology prior to cerebrospinal flow diversion (CSFD) surgery.
What is the cavernous sinus?
The cavernous sinus is the only one of the paired dural sinuses that communicates with each other. These sinuses have two intercavernous branches arching over the diaphragma sellae of the pituitary gland; one anterior and the other posterior to the infundibulum. They drain posteriorly by the petrosal sinuses .
What is the venous sinus stenting procedure?
The venous sinus stenting procedure involves inserting a stent in the brain to widen the narrowed veins. The procedure is done through a tiny incision in the upper leg.
What are the benefits of stenting for venous sinus stenosis?
The investigators found that every patient who underwent stenting for venous sinus stenosis had significant improvement in intracranial pressure and all visual parameters. Headaches improved in most patients as well.
What is venous sinus stenting for pseudotumor cerebri?
Venous Sinus Stenting for Pseudotumor Cerebri. In some people with pseudotumor cerebri (PTC), the normal absorption of cerebrospinal fluid into the veins of the brain is impaired due to a narrowing of the venous sinuses, passageways that convey blood and CSF from the brain to the jugular veins and eventually to the heart. This narrowing…
How effective is venous sinus stenting for PTC?
Venous sinus stenting is a relatively new procedure and researchers are still gathering data regarding how long the procedure manages PTC and what complications may occur over time.Stenting seems to address the underlying cause of the high pressure that characterizes PTC, but the exact mechanism remains controversial.