Search results for "Arachnoid"
showing 10 items of 130 documents
nrCBF for Timing of Angiography and Operation in Subarachnoid Hemorrhage
1983
Early operation on cerebral aneurysms is demanded not least because of the threat of spasm of the cerebral vessels. As is generally recognized, this is to be expected in a very high percentage within a few days after the first aneurysm hemorrhage and frequently cannot be diagnosed clinically (4, 5). Many neurosurgeons have rated the risk of operating in the presence of vasospasm so high that, like C.G. DRAKE in 1975 (2), they demanded control angiography with its own risk, especially in existing vasospasm in early angiography and the aneurysm operation itself could not take place rapidly.
Recommendations for the management of patients with aneurysmal subarachnoid hemorrhage
2005
After SAH, primary and secondary complications are frequent and often require neurosurgical interventions to avoid secondary brain damage. The authors of the present paper have summarized the available data about the treatment modalities often used for patients with SAH. The present recommendations have been developed as a neurosurgical and neuroanestesiological consensus. Evidence from prospective, randomized, double blind, placebo-controlled studies support grade A recommendations (standard) for the prophylaxis and treatment of cerebral vasospasm with oral Nimodipine in good grade patients. For intravenous Nimodipine or for oral nimodipine treatment in poor grade patients, available data …
Computed Tomography in Nonneoplastic Space-Occupying Intracranial Lesions
1981
A number of nonneoplastic intracranial space-occupying lesions may resemble neoplasms in the CT scan, and definitive diagnosis is not possible with CT studies alone in many cases. Misinterpretations are possible, even when all clinical data are considered in the interpretation of the CT scan. However, the most accurate possiblepreoperative diagnosis is a prerequisite for decisions on therapeutic strategy and surgical approach. Therefore some cases may require the full range of conventional neuroradiological techniques and careful consideration of clinical findings for correct interpretation of the CT scan with its consequences for therapy. Table 6 summarizes the most common alternatives in …
New applicator improves waterjet dissection quality
2010
Waterjet dissection is accomplished with Helix Hydro-Jet, but a new device with improved operative handling and potentially superior dissection qualities has been developed.Eighty-four fresh cadaveric pig brains were simultaneously cut with Helix Hydro-Jet and Erbejet 2. A commonly used applicator and a new applicator for the Helix Hydro-Jet were directly compared to the new Erbejet 2. Under standardised conditions, different pressure levels were applied to the brain surface without arachnoids. Technical features, cutting depth, tissue damage and differences of applicators were examined.Microscopic analysis of cutting depth revealed different dissection characteristics of both the devices. …
Manejo de las otolicuorreas
2013
Introduction: Cerebrospinal fluid otorrhea results from an abnormal communication between the subarachnoid space and tympanomastoid compartment; most of them are of traumatic aetiology. They have clinical interest due to the potential risk of meningitis, directly related to the aetiology. Our aim was to show our experience in the management of this process. Methods: A total of 17 patients diagnosed and treated for cerebrospinal fluid otorrhea from 2003 to 2011.
Endoscopic Treatment of Intracranial Arachnoid Cysts: A Retrospective Analysis of a 25-Year Experience.
2020
Background Since the development of neuroendoscopy, pure endoscopic fenestration for intracranial arachnoid cysts (ACs) became more and more popular and is actually preferred by many neurosurgeons. Objective To explore their techniques and experiences with endoscopic treatment of intracranial ACs over a 25-yr period. Methods A total of 95 endoscopic procedures in 87 patients with 88 intracranial ACs performed at the authors' departments between February 1993 and October 2018 were retrospectively analyzed. Particular respect was given to surgical technique, complications, patients' outcome, and radiological benefit in relation to cyst location. Results Patients' ages ranged from 23 d to 81 y…
<title>Flexible neuroendoscopy with laser and microsystem technique</title>
1994
The use of flexible neuroendoscopic techniques in neurosurgical procedures is routinely performed in the spinal canal and in the intracranial subdural space. Treated entities are syringomyelia, tumors with concomitant syrinxes in spinal cord, cystic legions in the subdural and subarachnoid space in the spinal canal as myelomeningoceles.© (1994) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Leukodiapedesis and leukocyte migration in the leptomeninges and in the subarachnoid space.
1981
Pleocytosis in cerebrospinal fluid and infiltration of the leptomeningeal tissue have been studied after injection of ferritin into the subarachnoid space (SAS) of cats. The most important source of granulocytes in the leptomeninges are the relatively large veins of the pia mater, which have very thin walls. Passing between the lining cells of the pia mater the granulocytes leave the connective tissue space of the pia mater and reach the SAS. Leukodiapedesis has also been observed in veins crossing the SAS. During this process, gaps between the lining cells of the perivascular leptomeningeal sheath may develop. There are two possible ways for the granulocytes to pass from the vascular pia m…
Subarachnoid Haemorrhage-Incidence of Hospitalization, Management and Case Fatality Rate-In the Silesian Province, Poland, in the Years 2009-2019.
2022
Little is known about the epidemiology of subarachnoid haemorrhage (SAH) in Poland, and until now no such research has been conducted for Silesia, which is the second largest province with circa 4.5 million inhabitants. Therefore, the current study was done to assess the data on SAH in the Silesian Province, Poland. The study was based on the data obtained from the administrative databases of the only public health insurer in Poland (the National Health Fund, NHF) from 2009 to 2019. The SAH cases were selected based on primary diagnosis coded in ICD-10 as I60. The total number of SAH cases was 2014 (41.8% men, 58.2% women). The number of SAH hospitalizations decreased from 199 in 2009 to 16…
Intracranial Venous Alteration in Patients With Aneurysmal Subarachnoid Hemorrhage: Protocol for the Prospective and Observational SAH Multicenter St…
2022
BackgroundArterial vasospasm has been ascribed as the responsible etiology of delayed cerebral infarction in patients with aneurysmal subarachnoid hemorrhage (aSAH), but other neurovascular structures may be involved. We present the protocol for a multicenter, prospective, observational study focused on analyzing morphological changes in cerebral veins of patients with aSAH.Methods and AnalysisIn a retrospective arm, we will collect head arterial and venous CT angiograms (CTA) of 50 patients with aSAH and 50 matching healthy controls at days 0–2 and 7–10, comparing morphological venous changes. A multicenter prospective observational study will follow. Patients aged ≥18 years of any gender …