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  • 1
    Electronic Resource
    Electronic Resource
    Cerebrospinal fluid outflow resistance measurements in the selection of patients for shunt surgery in the normal pressure hydrocephalus syndrome. A controlled trial (1990)
    Springer
    Acta neurochirurgica 104 (1990), S. 48-53 
    Details
    ISSN: 0942-0940
    Keywords: Normal-pressure hydrocephalus ; resistance to CSF outflow ; intracranial pressure ; pressure-volume index
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary In an attempt to determine to what extent the measurement of cerebrospinal fluid (CSF) outflow resistance (Rout) can distinguish patients with normal-pressure hydrocephalus (NPH) who respond to shunt surgery from patients who fail to do so, the authors undertook a controlled trial. Eighteen patients with the diagnosis of NPH entered the study. In connection with the shunt operation all patients who entered the study underwent Rout measurement by means of the pressure-volume index (PVI) method of bolus manipulation (Marmarouet al.). As a safety measure patients above 70 of age and patients with dementia as the only clinical symptom underwent continuous intraventricular pressure measurement before they entered the final study. As a result a total of fourteen patients underwent PVI test and shunt surgery during the same procedure. Patients with normal Rout thus served as controls, since all patients underwent shunt surgery irrespective of the result of the Rout measurement. Eight patients improved following surgery and the outcome did not correlate with result of PVI nor Rout determinations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01842893
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  • 2
    Electronic Resource
    Electronic Resource
    Normal pressure hydrocephalus: Correlation between CT and measurements of cerebrospinal fluid dynamics (1985)
    Springer
    Acta neurochirurgica 77 (1985), S. 8-13 
    Details
    ISSN: 0942-0940
    Keywords: CT ; communicating hydrocephalus ; normal-pressure hydrocephalus ; resistance to outflow of CSF
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Twenty-nine patients consecutively admitted for consideration of CSF diversion surgery for suspected communicating (“normal pressure”) hydrocephalus underwent cranial computerized tomography (CT) and study of cerebrospinal fluid (CSF) absorption, the latter determined as resistance to outflow of CSF (Ro). From the CT the size of the ventricular system was determined by various linear measurements and ratios and the presence of periventricular lucencies (PVL) and the size of cortical sulci was noted. Except for absence of cortical sulci greater than 3 mm no CT feature was suggestive of compromised CSF absorption. On the other hand, cortical atrophy did not rule out increased resistance to CSF-outflow. Features thought of as characteristic for normal pressure hydrocephalus on CT: large ventricles as compared with the amount of cortical atrophy and presence of PVL, correlated poorly with measured high resistance values. There was no correlation between the size of the ventricular system and resistance to CSF outflow. In the diagnostic distinction between communicating (“normal pressure”) hydrocephalus and cerebral atrophy (hydrocephalus ex vacuo) static CT cannot replace an actual determination of CSF outflow resistance.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01402299
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  • 3
    Electronic Resource
    Electronic Resource
    Predictive value of radiculography in patients with lumbago-sciatica a prospective study (part II) (1984)
    Springer
    Acta neurochirurgica 73 (1984), S. 213-221 
    Details
    ISSN: 0942-0940
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary One hundred patients with symptoms of lumbo-sacral root compression were prospectively and consecutively assigned to operation based alone on clinical findings. A preoperative myelogram was performed in all patients and described without a knowledge of the clinical features. All patients were explored for the clinically and myelographically relevant disc. When the myelogram was normal (16 patients) both lower lumbar interspaces were exposed. In 58 patients a herniated disc was revealed at surgery. Only “myelographic herniation” with indentation of the contrast column was accompanied by a high frequency of disc herniation at surgery (73–87%). In cases with normal myelograms only 5% had a disc herniation. The severity of the myelographic finding was clearly correlated to the frequency of positive surgical findings and good outcomes. The preoperative radiculogram gives a high degree of certainty in the preoperative evaluation whether a surgical lesion is present or not and reveals a precise prediction of the outcome of surgery.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01400855
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  • 4
    Electronic Resource
    Electronic Resource
    Clinical evaluation of a simple epidural pressure sensor (1986)
    Springer
    Acta neurochirurgica 83 (1986), S. 108-111 
    Details
    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
    URL: http://dx.doi.org/10.1007/BF01402387
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  • 5
    Electronic Resource
    Electronic Resource
    Predictive value of clinical and surgical findings in patients with lumbago-sciatica (1984)
    Springer
    Acta neurochirurgica 73 (1984), S. 67-76 
    Details
    ISSN: 0942-0940
    Keywords: Lumbar disc herniation ; lumbar root entrapment ; lower back pain ; sciatica
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary In a prospective, consecutive study of patients with lumbar back pain and sciatica, various clinical features and surgical findings were evaluated in order to analyse the predictive value regarding (1) level of diseased interspace (2) presence and type of lesion responsible for root compression (3) outcome after surgery. One hundred patients underwent surgery solely on clinical grounds. Fifty-eight had disc herniation. The level of disc herniation was correctly predicted in three quarters of patients with aprolapsed disc. The outcome after surgery was good in 77 patients. Only few clinical features, namely male sex and scoliosis were predictors of a good outcome. Lasegue's sign was indicative of root compression in 90%, but only two-thirds had disc herniation. Conversely one-third had disc herniation in spite of a “negative” test. Lasegue's sign was not superior to other clinical tests in predicting outcome. The most important indicator of a good outcome was the presence of disc herniation at surgery. Patients with disc pathology other than true disc herniation fared equally with patients, who had normal discs disclosed at surgery. Myelography was undertaken in all patients prior to surgery, the results of which are analysed in the following paper. (Espersenet al.: Predictive value of radiculography in patients with lumbago-sciatica. A prospective study
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01401785
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  • 6
    Electronic Resource
    Electronic Resource
    Infected ventriculostomy: Bacteriology and treatment (1989)
    Springer
    Acta neurochirurgica 100 (1989), S. 67-69 
    Details
    ISSN: 0942-0940
    Keywords: Ventriculostomy ; ventriculitis ; bacteriology ; treatment ; CSF-infections
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary During a period of 6 years 256 patients underwent ventriculostomy as their first operative procedure. Twenty-seven patients (11 %) developed CSF-infections, in almost 90% caused by Gram-positive cocci compatible with normal skin flora. The incidence of infection was distributed evenly in the postoperative period. All patients received intravenous and intrathecal antibiotic treatment simultaneously according to the sensitivity test. The treatment was highly effective, and without serious adverse effects.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01405277
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  • 7
    Electronic Resource
    Electronic Resource
    Measurements of the normal hemispheric sulci with computer tomography: A preliminary study on 44 adults (1975)
    Springer
    Neuroradiology 10 (1975), S. 147-149 
    Details
    ISSN: 1432-1920
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé L'auteur détermine une largeur moyenne de 3,5 mm des sillons corticaux hémisphériques. Statistiquement il n'y a pas de différences en fonction de l'âge ou du sexe.
    Abstract: Zusammenfassung Bei 44 Erwachsenen wurden mit der Computer-Tomographie (EMI-Scanner) mit der 160/160 Matrix Messungen über die Weite der Furchen der Hirnrinde durchgeführt. Dabei wurde ein Durchschnittswert von 3,4 mm gefunden.
    Notes: Summary 44 normal adults were examined by computer tomography (CT) with the fine matrix EMI scanner. Measurements of the width of the hemispheric sulci were possible in all but one case. An average value of 3.4 mm was found, but no sexual difference or influence of age could be shown statistically. The necessity of larger investigations of the normal population is stressed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00341816
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  • 8
    Electronic Resource
    Electronic Resource
    Measurements of the normal ventricular system with computer tomography of the brain. A preliminary study on 44 adults (1976)
    Springer
    Neuroradiology 10 (1976), S. 205-213 
    Details
    ISSN: 1432-1920
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Les auteurs ont étudié le cerveau chez 44 adultes normaux à l'aide de la tomogrphie computérisée sur EMI-scanner à matrice fine. Les mensurations de différentes régions du système ventriculaire montraient des valeurs différentes selon le sexe et une augmentation avec l'âge. Les valeurs absolues sont préférées aux indices et rapports.
    Abstract: Zusammenfassung Untersuchungen an 44 normalen Personen mit dem EMI-Scanner (160/160 Matrix). Die Messungen wurden an verschiedene Teilen des Ventrikelsytems durchgeführt. Es fanden sich Geschlechtsunterschiede und ein Größenanstieg mit zunehmendem Alter. Dabei zeigte sich eine gute Korrelation zwischen den Untersuchungen mit der Computer-Tomographie und der Pneumoencephalographie.
    Notes: Summary The brains of 44 normal adults were examined by computer tomography (CT) with the fine matrix EMI scanner. Measurements of various parts of the ventricular system showed a sexual difference and an increase with age. Absolute measurements are preferred to indices or ratios. Comparison with the same parameters in pneumoencephalography and ventricular casts showed good correlation. The need for larger investigations of the normal population is stressed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00329997
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