View clinical trials related to Pseudotumor Cerebri.
Filter by:The objective of the study is to show that stenting the transverse-sigmoid sinus with the River stent is safe and has probable benefit to relieve clinical symptoms in subjects with idiopathic intracranial hypertension (IIH). The study will enroll 39 IIH subjects with moderate to severe visual field loss or severe headaches that have failed medical therapy. The primary safety endpoint is the rate of major adverse event at 12 months The primary probable benefit endpoint is a composite at 12 months of absence of significant sinus stenosis and clinically relevant improvement.
Randomized trial of adults (≥18 years old) with idiopathic intracranial hypertension and moderate to severe visual loss without substantial recent treatment who are randomly assigned to (1) medical therapy, (2) medical therapy plus ONSF, or (3) medical therapy plus VPS. The primary outcome is visual field mean deviation change at first of Month 6 (26 weeks) or time of treatment failure of the eligible eye(s), followed by a continuation study to assess time to treatment failure. The determination of eligible eye(s) is based on meeting the eligibility criteria at baseline.
PTC(Pseudotumor cerebri) patients may develop increased Intracranial pressure (ICP) that can produces increased pressure around the distal optic nerve,which is likely followed by venule compression, ischemia, and loss of visual function.Vision loss in PTC is most commonly characterized by standard automated perimetry to measure peripheral visual field sensitivity. Pupillometry is a promising approach for functional assessment in PTC because it is noninvasive, objective, performed quickly with minimal patient cooperation needed. The feasibility of using chromatic multifocal pupillometry for assesment of PTC will be examined.
Investigators will compare magnetic resonance (MR) elastography measurements to other forms of noninvasive methods of detecting raised intracranial pressure, including optical coherence tomography (OCT) imaging measurements of the retinal nerve fiber layer (RNFL) and indirect signs of raised intracranial pressure on magnetic resonance imaging (MRI).
The investigators have documented a genetic predisposition for some astronauts to develop ophthalmologic issues (e.g., choroidal folds, cotton wool spots, optic disc edema). Women with polycystic ovary syndrome (PCOS) have several characteristics similar to those described in astronauts, including: higher homocysteine concentrations, increased incidence of intracranial hypertension, increased retinal nerve fiber layer thickness, increased incidence of white matter hyperintensities on MRI, increased androgen concentrations (or androgen responses to space flight), and indices of altered carbohydrate metabolism. Women with PCOS have not been evaluated in detail regarding the occurrence of other anomalies observed in astronauts including choroidal folds, optic disc edema and cotton wool spots as well as changes in cycloplegic refraction, and optic nerve sheath diameter. While researchers have evaluated one-carbon metabolism pathway polymorphisms re: PCOS, and initial studies show an association with certain one-carbon polymorphisms, none have looked at the complete set of SNPs proposed here. This study will evaluate women with PCOS and/or idiopathic intracranial hypertension (IIH) to assess one-carbon biochemistry and genetics and their possible correlation with ophthalmologic findings. The investigators aim to clarify the relationship of one carbon metabolism and ophthalmic findings in astronauts and patients with PCOS and/or IIH.
Longitudinal clinical observation of optic nerve head, using slit lamp fundoscopy, guides therapy in pediatric idiopathic intracranial hypertension (IIH) patients; however, it remains a limited method of producing quantitative data in evaluating in patients with IIH. In this study we intend to compare, by using spectral domain optical coherence tomography (OCT), the mean retinal nerve fiber layer thickness and total retinal thickness (RNFLT/TRT) of the optic nerve of newly diagnosed IIH children to a control group. This will provide a quantitative measure for follow-up and treatment of this patient group.
Patients in for treatment of benign intracranial hypertension will undergo two tests that are not routinely performed for these patients: central corneal thickness and axial length of the eye. The data obtained from these measurements will be assessed to see if the correlate with aspects of vision loss including visual acuity, visual field status, optical coherence tomography (OCT) results, and fundus photographs.
Pseudotumor cerebri, also called idiopathic intracranial hypertension (IIH), is characterized by elevated intracranial pressure, headache, and if severe, vision loss. IIH is difficult to treat. Medical management may not adequately resolve the symptoms, and surgical management (primarily through cerebrospinal fluid [CSF] shunting) has a high failure rate. Recently, a relationship between IIH and stenosis of the dural venous sinuses (the veins that drain blood from the brain) has been reported. In patients with IIH in whom there is stenosis of one or more dural venous sinuses, placing a stent in the venous sinus may improve patients' objective symptoms (such as visual loss and papilledema) and subjective symptoms (such as headache). This study will determine whether dural venous sinus stenting is as effective as CSF shunting (considered the standard surgical treatment) in treating IIH patients who have moderate vision loss and stenosis of the dural venous sinuses.
This prospective study will use magnetic resonance imaging of patients with Idiopathic Intracranial Hypertension (IIH), to determine if the common radiological finding of transverse venous sinus stenosis can be reversed with standard of care medical treatment of IIH.
The exact incidence of optic disc swelling and idiopathic intracranial hypertension in patients using antiacne medication is not known so far. The investigators hypothesize that swelling of retinal nerve fibre layer measured by optical coherence tomography is more frequent then assumed so far.