GLORIA

GEOMAR Library Ocean Research Information Access

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Langenbeck's archives of surgery 316 (1966), S. 659-664 
    ISSN: 1435-2451
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Langenbeck's archives of surgery 322 (1968), S. 593-597 
    ISSN: 1435-2451
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The application of an antimetabolite of niacin in albinorats leads to brain-edema with a significant increase of the sodium and water content in braintissue. In the myocardium these changes are not observed. By application of xantinolnicotinate, niacin or nicotinamide, these changes of electrolyte and water in the brain of animals poisoned with 6-aminonicotinamide can be prevented. There are differences between the different nicotinic acid compounds in counteracting the effect of 6-aminonicotinamide. The application of 6-aminonicotinamide causes an error of NAD- or NADP-synthesis respectively. Therefore we conclude that the changes of electrolytes and water, observed in brain-tissue, are the consequence of disturbances of active transport.
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Neurosurgical review 2 (1979), S. 105-111 
    ISSN: 1437-2320
    Keywords: Severe head injury ; Dexamethasone ; Doubleblind-study ; Schwere Schädel-Hirn-Verletzung ; Dexamethason ; Doppel-Blind-Studie
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Es werden die Ergebnisse einer Doppel-Blind-Studie über die Auswirkungen von Placebo, niedriger und hoher Dosierung von Dexamethason bei schweren gedeckten Schädel-Hirn-Verletzungen mitgeteilt. Die Daten von 95 Patienten wurden sorgfältig analysiert in bezug auf Mortalität, neurologischen Verlauf und neurologische Symptome, Mittelhirn-Läsionen und Endzustand. Die Ergebnisse zeigen, daß Dexamethason, besonders in hoher Dosis, die Mortalität senkt und den neurologischen Verlauf bessert. Die Steroid-Behandlung scheint sowohl die Überlebens-Chance wie auch -Qualität zu verbessern. Neben der Dosierung kommt dem Zeitpunkt der Verabreichung große Bedeutung zu.
    Notes: Summary The results of a double-blind-study on the effects of placebo, a low dose and a high dose of dexamethasone on severe closed head injury are presented. 95 patients were selected and carefully analyzed according to mortality, neurological course and symptoms, midbrain lesions and final outcome. The results demonstrate that dexamethasone, particularly given in high doses, reduces mortality and improves the neurological course. The steroid treatment seems to improve chances as well as quality of survival. Apart from the dose, timing of administration is of great importance.
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 4
    Electronic Resource
    Electronic Resource
    Springer
    International journal of legal medicine 70 (1972), S. 46-52 
    ISSN: 1437-1596
    Keywords: Alkohol, Anflutung ; Alkohol, Verteilung bei oraler Resorption ; Resorption, Alkohol ; Narkose, Eliminationsrate
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Law
    Description / Table of Contents: Zusammenfassung Die geringere Alkohol-Konzentrationstoleranz während der Anflutungsphase kann auf eine stärkere Alkoholanflutung im Gehirn zurückgeführt werden. Die Ursache liegt in der gegenüber dem peripheren Venenblut überhöhten Alkoholkonzentration im arteriellen Blut und einem schnellen Konzentrationsausgleich zwischen arteriellem Blut und Hirngewebe. Die arterio-venöse Alkohol-Konzentrationsdifferenz nach Gabe von 0,8 g Alkohol (33 W/W% Lösung, 15 min Trinkzeit) wurde bei 5 Patienten einer Intensivstation bestimmt. Sie betrug maximal 0,27±0,20‰. Als maximale Alkoholkonzentration wurden im arteriellen Blut 0,94‰, im venösen 0,81‰ erreicht. Die Eliminationsrate (β 60) war mit 0,30±0,05‰ sehr hoch. Vergleichsweise wurde die Eliminationsrate (β 60-Wert) bei 5 Patienten während einer Halothan-Narkose bestimmt. Sie betrug 0,15±0,02‰ und lag damit im Normbereich. Auch Tierversuche an Ratten ergaben keine sicher verminderte Alkohol-Eliminationsrate unter Halothan. Eine mögliche geringe Verminderung des Äthanolabbaus durch kompetitive Hemmung der ADH-Aktivität durch das Halothan-Abbauprodukt Trifluoräthanol erscheint bei der Rückrechnung durch Anwendung eines β 60-Wertes von 0,10‰ hinreichend berücksichtigt.
    Notes: Summary The lower tolerance to ethylalcohol during the resorptive phase may be attributed to a higher concentration of alcohol in the brain. The cause is the increased concentration of alcohol in the arterial blood — as compared to the peripheral venous blood — and a fast concentration adjustment between the arterial blood and brain-tissue. The arterial-venous difference of alcohol concentration after administration of 0.8 g ethylalcohol (33 W/W% solution, 15 min absorption) was determined in 5 patients in an intensive care unit. It indicated a maximum of 0.27±0.20‰. An alcohol concentration of 0.94‰ was reached in the arterial blood and 0.81‰ in the venous blood. The elimination rate (β 60) of 0.30±0.05‰ was very high. In comparison, an elimination rate (β 60) was obtained in 5 patients during Halothane anesthesia. It amounted to 0.15±0.02‰ and was, therefore, within the normal range. Rats did not show reduced ethylalcohol elimination rate under Halothane either. A possible small reduction in ethylalcohol degradation may be attributed to a competitive restraint of ADH-activity by Trifluorethanol, which is a Halothane product of metabolism. This seems to be sufficiently considered when using a β 60 value of 0.10‰ for the determination of the previous blood alcohol concentration.
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Naturwissenschaften 52 (1965), S. 501-501 
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 6
    ISSN: 1433-0407
    Keywords: Schlüsselwörter Gliom ; Astrozytom ; Oligodendrogliom ; Kavernom ; Metastase ; Kortex ; Motorik ; Sprache ; Neuromonitoring ; Neuropsychologie ; Key words Glioma ; Astrocytoma ; Oligodendroglioma ; Cavernoma ; Metastasis ; Brain ; Cortex ; Sensorimotor ; Language ; Speech ; Neuromonitoring ; Neuropsychology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Summary We report on 30 cases where we have used cortical stimulation mapping to define the areas representing sensorimotor, language and speech functions under local anesthesia to facilitate resection of space-occupying lesions near these areas. Under the simplistic concept that Broca’s area lies in the frontal operculum (inferior frontal gyrus) and that Wernicke’s area is located in the posterior perisylvian area (superior temporal, angular and supramarginal gyri), we found language and speech function to be represented outside these areas in up to 4 stimulation sites of 15 patients. The results of cortical stimulation mapping were therefore essential to decide on the optimal access route to the lesions that were located subcortically and on the optimal resection plane in gliomas. After the limits of these areas and of the lesions had been established with stimulation mapping and with intrasurgical microscopic smear preparations, respectively, lesions were safely removed under continuous monitoring of sensorimotor, language and speech function. Immediately after surgery we encountered language and speech deficits in 9 patients (30%), which resolved completely in 5 and inclompletely in 4 instances. Thus, language functions were normal in 26 patients (87%) at the end of the follow-up period. It is concluded that use of this technique allows safe and extensive resection of lesions that would otherwise have been considered hazardous to remove or inexcisable.
    Notes: Zusammenfassung 1990 bis 1994 haben wir 30 Patienten mit Prozessen nahe den kortikalen Sprachzentren in Lokalanästhesie mit Analgosedierung operiert. Die kortikalen Zentren von Sensomotorik, Sprache und Sprechen wurden mittels elektrischer Reizung (kortikales Mapping) identifiziert, die Raumforderung während der selben Operation mikrochirurgisch entfernt. Geht man von der vereinfachten Vorstellung aus, daß das Broca-Sprachzentrum im frontalen Operkulum und das Wernicke-Sprachzentrum um die hinteren Anteile der Sylvischen Fissur liegen, so fand sich bei 15 Patienten auch Sprachrepräsentation an bis zu 4 Reizorten ausserhalb dieser Sprachzentren. Die Ergebnisse des kortikalen Mapping waren deshalb entscheidend für die Wahl des Zugangsweges zu Prozessen unter der Hirnoberfläche und für die Wahl der Resektionsgrenzen bei den Gliomen. Die Tumorresektion wurde beendet, wenn die Resektionsränder zytologisch tumorfrei waren, der Prozeß zu nahe an „eloquente” Hirnareale heranreichte oder wenn Störungen von Sprache, Sprechen oder Körpermotorik auftraten. Unmittelbar postoperativ kam es bei 9 Patienten (30%) zu einem variabel ausgeprägten neuropsychologischen Defizit, das sich bis zur Abschlußuntersuchung bei 5 dieser Patienten normalisierte. Mithin fand sich bei 26 (87%) der 30 Patienten am Ende der Nachuntersuchungszeit kein faßbares neuropsychologisches Defizit. Dies bedeutet, daß die Resektion bis an die Grenzen des funktionell Statthaften gegangen war, daß diese Grenzen aber zumeist nicht überschritten wurden.
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Acta neurochirurgica 117 (1992), S. 143-148 
    ISSN: 0942-0940
    Keywords: Lumbar disc herniation ; posterior longitudinal ligament ; disc migration ; topography
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A prospective intra-operative analysis of the location of lumbar disc herniation was performed in 131 patients with verified 54% contained (incomplete) and 46% non-contained (complete) lumbar disc herniations. Bulging discs or protrusions are not included in this study. Complete disc herniations occurred more frequently in the upper lumbar spine. The localization of the lumbar disc herniations within its segment showed no correlation to the affected level. 64% of the disc herniations were located medio-laterally, 20% laterally, 12% within or lateral of the intervertebral compartment and 5% in the midline. Nearly one third of all herniations were found at the level of the disc space. Medio-lateral disc herniations were displaced more often in a caudal direction, lateral herniations were found displaced upwards and downwards with similar frequency while extraforaminal herniations migrated significantly more often in a cranial direction. The pathomechanism and anatomical pathways of disc fragment migration are discussed on the basis of a new concept of the anterior extradural space.
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Acta neurochirurgica 130 (1994), S. 35-46 
    ISSN: 0942-0940
    Keywords: Cavernous malformation ; arteriovenous malformation ; brain stem ; surgery ; outcome
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary A retrospective analysis of 139 patients with brain stem cavernous malformations is presented. The material consists of 41 cases from Bern and Phoenix and 98 further well-documented cases from the literature. Sixty-eight patients were male, 70 were female. The average age was 31.8+11.8 years. Sixty-two percent of the cavernous malformations were in the pons, 14% were in the mesencephalon, 12% were in the pontomesencephalic and in the pontomedullary junction, and 5% were in the medulla. Eighty-eight percent of the patients showed evidence of recent or previous hemorrhage, 55% had one hemorrhage. 17% had two hemorrhages, and 17% had three or more hemorrhages. Twelve patients died from a hemorrhage, 5 with the first bleeding and 7 with a rebleeding. The minimum bleeding rate was 2.7% per year and the average rebleeding rate 21% per year and per lesion. Most lesions had a diameter between 10 and 30 mm. Increase in size was observed in 12 of the patients; this correspondends to about 21% when only patients with a follow-up of at least one year are considered. In 93 patients the cavernous malformation was removed operatively while in 30 patients the lesion was not removed. In the group with conservative management at the end of the observation period (up to 25 and 32 years), 66.6% had no or only a slight neurological deficit, 6.7% were moderately disabled, 6.7% were completely dependent, and 20% had died. In the group treated surgically 83.9% had no or only a slight neurological deficit, and 15% were moderately disabled. One patient remained severely disabled, no patient died. The limitations of the retrospective nature of this study are stressed.
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Acta neurochirurgica 140 (1998), S. 1197-1203 
    ISSN: 0942-0940
    Keywords: Keywords: Operative training programme; escalating surgical responsibility.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary  The operative neurosurgical training programme in our clinic was restructured from 1991–93 with the concept of having a frame for the categories and the volume of operations for training year 1 to 6 and to continuously escalate the complexity of the interventions. In the present report the experiences gained so far as well as the deficiencies are described.  Between 1991 and 1995 the number of major neurosurgical operations was in the range of 2100 per year, and about 41–48% of these operations were done – under supervision – by residents. By slowly reducing the number of residents from 13 to 9, the trainees started to gain surgical experience earlier, and the average number of operations performed per year increased markedly (from 82 to 122), approximating more to our preplanned figures, also in the various categories. An important aspect is therefore to adapt the number of trainees relative to the available operative case material. According to our preliminary data, about 250–300 operations per year are needed to train adequately one resident. The evaluation also showed deficiencies in some categories, e.g. in pain treatment and peripheral nerve surgery, where care must be taken to better fulfil the official requirements.  The object of a 6-year education is to offer a well balanced training programme with systematic escalation of surgical responsibility until full competency is reached. However, this goal needs to be defined more precisely. The plan presented recently by the Committee for Graduate and Postgraduate Education of the German Society of Neurosurgery [1] may serve as a proposal. A personal surgical logbook would allow a much better record and evaluation the progress of the individual trainee as well as the engagement of the teachers.
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
  • 10
    ISSN: 0942-0940
    Keywords: Keywords: Vasogenic brain oedema; infusion oedema model; resolution of oedema fluid; closed cranial window; ventriculo-cisternal perfusion; subarachnoid space.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary  Objective. The aim of the current study was to develop an experimental animal model for quantitative analysis of oedema resolution via the subarachnoid space and the ventricular system using fluorescent oedema markers.  Methods. Artificial cerebrospinal fluid (CSF) containing TRITC-albumin (MW 67.000D) and Na+-fluorescein (MW 376D) was continuously infused into the white matter of the left frontal lobe of New Zealand white rabbits (n=6) at a rate of 100 μl/h for 3 hrs. A closed cranial window for superfusion of the brain surface with artificial CSF fluid (3 ml/h) was implanted above the left parietal cortex for measurement of the fluorescence markers in the subarachnoid space. Uptake of the fluorescence indicators into the ventricles was quantified by ventriculo-cisternal perfusion (3 ml/h). The effluates were collected at 30 min intervals for 3 hrs after the start of infusion. Clearance of the oedema fluid into the perfusates was measured by fluorescence spectrophotometry.  Results. At an intracranial pressure of 15.0±1.7 mm Hg (mean±SEM) both indicators started to accumulate in the subarachnoid and ventricular perfusates at 90 min following onset of oedema fluid infusion. The concentrations of the indicators in the ventricular system increased to 7.7±5.1% of Na+-fluorescein and 16.1±13.0% of TRITC-albumin of the total amount infused were recovered in the ventricular system at 3 hours after start of the oedema infusion, while 3.4±3.2% of Na+-fluorescein and 3.7%± 3.2 of TRITC-albumin, respectively, were found in the effluates of the subarachnoid space.  Conclusion. The present study demonstrates that resolution of vasogenic brain oedema into the cerebral ventricular system and the subarachnoid space following its entry into cerbral white matter can be quantitatively analysed using fluorescence markers, which serve as oedema fluid indicators. The results indicate that the oedema fluid is cleared not only into the ventricular system but also via the subarachnoid space.
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...