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  • 1
    ISSN: 0942-0940
    Keywords: Cancer ; spinal cord compression ; occurrence ; symptoms ; diagnosis ; treatment and prognosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary We reviewed all medical records concerning patients suffering from spinal cord or cauda equina compression (SCC) secondary to cancer, in the eastern part of Denmark, from 1979 through 1985. During the period the incidence of SCC in cancer patients went up from 4.4% to 6%. However, this increase was not significant. The series comprised 398 cases, with carcinoma of the prostate (19%), lung (18%), breast (14%) and kidney (10%) accounting for 61%. The symptoms were evaluated in accordance with the patients rating of pain, motor deficits, sphincter control and paraesthesia, whereas the clinical manifestations were classified on the basis of motor deficit and bladder dysfunction. During the period preceding the diagnosis of SCC, 83% of the patients suffered from back pain, 67% from deteriorating gait and 48% had retention of the urine. In 35% of the patients there was no sphincter disturbance and 10% had normal sensory function. The outcome of treatment was estimated by changes in motor deficits and sphincter function, and depended primarily on the patients condition at the time of the diagnosis. Of the patients who were able to walk before treatment, 79% remained ambulatory, wheras only 18% of the non-ambulatory patients regained walking ability. Patients treated by decompressive laminectomy followed by radiotherapy apparantly had a better response than patients treated with surgery or irradiation alone, but when the patients pre-treatment motor function was taken into account, no significant difference was observed. The study may call for a properly randomized trial with careful stratification of tumour biology, performance status and neurological deficits.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 0942-0940
    Keywords: Subarachnoid haemorrhage ; resistance to CSF-outflow ; conductance to CSF-outflow ; CSF-dynamics ; intracranial pressure ; high pressure hydrocephalus ; normal pressure hydrocephalus ; CT-scanning
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Resistance to CSF-outflow (Rout) and intracranial pressure (ICP) were measured in 33 patients with hydrocephalus after subarachnoid haemorrhage (SAH). Eleven patients examined between 10 to 30 days after SAH had high pressure hydrocephalus (HPH). Twenty-two patients had normal pressure hydrocephalus (NPH). All HPH-patients had ICP above 15 mmHg, plateau waves and B-waves, a median Rout of 59 mmHg×ml−1×min−1 (range 29–100). All NPH-patients had a normal ICP level, no plateau waves, but long periods of B-waves and a median Rout of 22 mmHg×ml−1×min−1 (range 6–47). Of the 11 patients with HPH six were shunted and five had temporary ventricular drainage. Five patients improved and six died. Of the five survivors only one went back to work. Of the 22 NPH-patients 18 were treated with a shunt, one refused shuntoperation and three had normal Rout. Seventeen improved after shunting. At followup 12 had a normal social life, 5 lived in a nursing home and 1 was dead. Thus, early development of hydrocephalus after subarachnoid haemorrhage is associated with a high Rout and a high ICP, whereas late (more than one month) hydrocephalus may be associated with normal ICP and high Rout. Patients with NPH and a high Rout have frequent B-waves and should be shunted. Patients with a long interval from subarachnoid haemorrhage to the diagnosis of hydrocephalus often have a normal ICP, low frequency of B-waves, normal CSF-dynamics and need no shunting.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 0942-0940
    Keywords: Cerebrospinal fluid shunts ; complications ; hydrocephalus ; infections
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Postoperative infections are major complications of cerebrospinal fluid (CSF) shunting in the treatment of hydrocephalus and other conditions with obstructed CSF circulation. In a retrospective study 884 first-time shunted patients with hydrocephalus operated on in the years 1958–1989 were investigated with special reference to the infection rate and to the influence of the following variables: time period, age of the patient, education of the neurosurgeon, length and time of the operation and the exact placement of the distal drain. The overall infection rate for all implanted CSF shunts was 7.4% (5.7–9.3%) and the acute rate of infection was 6.2% (4.6–7.9%). The rate of infection was virtually constant for all variables with the exception of the education of the neurosurgeon. Neurosurgical trainees particularly had a significantly higher rate of infection. Shunt infection is still a major complication. The infection rate has not declined in recent decades. It is not possible to relate any main cause to the infection rate. The literature recommends removal of the infected shunt combined with antibiotics. The use of prophylactic antibiotics is still controversial. No prospective, double-blind studies, including a sufficiently large number of patients to evaluate this issue, exist today.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Acta neurochirurgica 57 (1981), S. 67-73 
    ISSN: 0942-0940
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary In 50 patients with normal pressure hydrocephalus (NPH) the findings on lumbar isotope cisternography (ICG) were compared to the conductance to outflow of CSF (Cout) as measured by lumbo-ventricular perfusion. The purpose was to identify those ICG-characteristics that imply a low Cout and thus may indicate CSF shunting therapy. Normal ICG was found only in three patients, where Cout was not, or only moderately, decreased. There was a significant correlation between a low Cout and occurrence of ventricular retention and absent parasagittal accumulation at 24 hours or later, following injection. These findings may, however, also be present in patients with no, or only moderate, decreased Cout, where CSF shunting may seem unjustified. It is concluded, that the indication for CSF shunting cannot be based on the results of ICG alone.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 0942-0940
    Keywords: Cerebrospinal fluid dynamics ; conductance to CSF-outflow ; hydrocephalus ; intracranial pressure ; periventricular lucency
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The intraventricular pressure was compared with conductance to outflow of CSF (Cout) in 12 patients with high-pressure hydrocephalus of less than 3 months duration. Cout was measured by a lumbo-ventricular or a ventriculo-ventricular perfusion test. In all patients Cout was very low (median 0.016 ml mm Hg−1 minute−1). Thus high-pressure hydrocephalus may be considered to be the consequence of a greatly increased resistance to resorption of CSF. The level of the measured ICP (mean: ICP 23.5 mm Hg) corresponded to the theoretical level calculated from the measured Cout. B-waves were observed during most of the recording periods and episodes of plateau waves were seen in all patients but one. In this particular group of patients, the unsatisfactory results of ventriculo-atrial shunting emphasize the high risks associated conditions leading to high-pressure hydrocephalus.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 0942-0940
    Keywords: Epidural pressure ; intraventricular pressure ; pressure monitoring
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The Plastimed® epidural pressure sensor was evaluated in 35 patients, twenty-eight of whom were suffering from head injury. In seven patients simultaneous intraventricular pressure measurements were obtained. The epidural pressure sensor was only functioning satisfactorily in approximately 2/3 of the patients, while it was malfunctioning or not functioning in the remainder. In seven comparable IVP/EDP studies significant differences up to 25 mm Hg were noted. In three patients IVP was greater than EDP. In two patients the opposite was true. No significant complications were observed. These unsatisfactory results have made us abandon the technique and resort to intraventricular or subarachnoidal pressure measurements.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Acta neurochirurgica 71 (1984), S. 1-45 
    ISSN: 0942-0940
    Keywords: Normal pressure hydrocephalus ; conductance to CSF outflow ; results from shunting ; pressure recording ; computed tomography ; isotope ; cisternography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Normal pressure hydrocephalus (NPH) is defined as a combination of dementia, gait disturbances and/or urinary incontinence, hydrocephalus, and a normal intracranial mean pressure. The clinical effect of CSF shunting in patients with this syndrome is sometimes striking, but generally only 50–60% of the shunted patients benefit from the treatment. It is assumed that the condition is caused by reduced conductance to outflow of CSF (Cout). A clinically usable method for the measurement of Cout has been developed. Cout has been measured in 80 patients with NPH. The results of clinical examination, computed tomography (CT), long-term intracranial pressure recording, isotope cisternography (ICG), and Cout have been compared to the clinical results of shunting 3 and 12 months after operation. Among the preoperative investigations Cout proved to have the best diagnostic specifity and sensitivity. Thus, selection of patients for shunting on the basis of Cout should lead to a satisfyingly high success rate. The different methods for measurement of Cout are discussed, and a theory on the pathophysiology of NPH is proposed. A clinical investigational programme, based on the results from clinical examination, CT, pressure recording, and measurements of Cout is suggested.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 0942-0940
    Keywords: CSF dynamics ; resistence to CSF outflows ; CSF infusion test ; computerized analysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Resistance to cerebro-spinal fluid outflow is together with intracranial pressure the most important parameter in the investigation of patients with disturbances of CSF dynamics. The methods for determination of resistance are either unreliable or too time-consuming for routine clinical use, which has limited the popularity of this kind of measurement. In this paper a method for computerized acquisition and processing of an infusion test is described. A good correlation to a standard technique is documented.
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 0942-0940
    Keywords: Cerebrospinal fluid shunts ; hydrocephalus ; revision rate ; shunt types
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Shunt complications and revisions are common in hydrocephalic patients treated with a ventriculo-atrial or a ventriculo-peritoneal shunt. The reported revision rate differs very much but the rate of revision is close to 50% in many papers. Data from 884 hydrocephalic patients treated with various shunt types in the period 1958–1989 were recorded retrospectively in order to evaluate the frequency of revision for various shunt types and secondly to analyse the specific reasons for the shunt revisions. The rate of shunt revision was 45%. The Pudenz shunt was revised more often (62%) than the remaining shunt types. The Hakim and the Orbis-Sigma shunts had fewer revisions (35% and 27%, respectively) than the other observed shunt types. A defect of or an obstruction in the ventricular catheters was a frequent cause of revision followed by a defect or an obstruction of the distal catheter, a displacement of the distal catheter and an acute infection. Because of the higher rate of revision for the Pudenz shunt the rate of the above mentioned specific complications is also higher in most of the subgroups for that specific shunt type. Driven by these experiences it is reasonable to seek to develop and introduce new shunt types in an attempt to reduce the complication rate.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Acta neurochirurgica 101 (1989), S. 163-164 
    ISSN: 0942-0940
    Keywords: Dermoid ; epidermoid tumour ; intraspinal ; surgical treatment
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A dermoid is a congenital tumour. An intraspinal dermoid tumour is very rare. Most reported cases have been in children. The oldest case in literature was 40 years old. We report a case in which a 46 years old woman had a thoracolumbar intraspinal dermoid. The dermoid was partially removed by operation. The condition of the patient improved. Control MR-scan showed that the remaining tumour extended up to the level of the tenth thoracic vertebra. If radical tumour removal is difficult, e.g. due to strong capsuletissue adherence or long tumour extension, it seems to be advísable not to force radicality but to follow the clinical course and to reoperate if tumour growth causes new symptoms.
    Type of Medium: Electronic Resource
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