Knut Wester

Summary

Affiliation: Haukeland University Hospital
Country: Norway

Publications

  1. ncbi request reprint A population-based study of intracranial arachnoid cysts: clinical and neuroimaging outcomes following surgical cyst decompression in children
    Christian A Helland
    Section for Neurosurgery, Department of Surgical Sciences, University of Bergen, Bergen, Norway
    J Neurosurg 105:385-90. 2006
  2. ncbi request reprint Visual attention in patients with intracranial arachnoid cysts
    Hilde Gundersen
    Dept of Biological and Medical Psychology, University of Bergen, 5021, Bergen, Norway
    J Neurol 254:60-6. 2007
  3. pmc Arachnoid cysts do not contain cerebrospinal fluid: A comparative chemical analysis of arachnoid cyst fluid and cerebrospinal fluid in adults
    Magnus Berle
    Institute of Medicine, University of Bergen, 5021 Bergen, Norway
    Cerebrospinal Fluid Res 7:8. 2010
  4. ncbi request reprint Verbal laterality and handedness in patients with intracranial arachnoid cysts
    Knut Wester
    Department of Neurosurgery, University of Bergen, School of Medicine, Haukeland University Hospital, 5021 Bergen, Norway
    J Neurol 250:36-41. 2003
  5. doi request reprint Intracranial arachnoid cysts--do they impair mental functions?
    Knut Wester
    Section for Neurosurgery, Dept of Surgical Sciences, University of Bergen, 5021, Bergen, Norway
    J Neurol 255:1113-20. 2008
  6. ncbi request reprint Auditory based neuropsychology in neurosurgery
    Knut Wester
    Section for Neurosurgery, Department of Surgical Sciences, University of Bergen, Norway
    Hear Res 238:133-8. 2008
  7. pmc A population based study of intracranial arachnoid cysts: clinical and neuroimaging outcomes following surgical cyst decompression in adults
    Christian A Helland
    Section for Neurosurgery, Department of Surgical Sciences, University of Bergen, and Haukeland University Hospital, Bergen, Norway
    J Neurol Neurosurg Psychiatry 78:1129-35. 2007
  8. doi request reprint Maze learning in patients with intracranial arachnoid cysts
    Elisabeth Isaksen
    Department of Surgical Sciences, University of Bergen, Bergen, Norway
    Acta Neurochir (Wien) 155:841-8; discussion 848. 2013
  9. pmc Intracystic pressure in patients with temporal arachnoid cysts: a prospective study of preoperative complaints and postoperative outcome
    Christian A Helland
    Department of Surgical Sciences, Section for Neurosurgery, University of Bergen, Norway
    J Neurol Neurosurg Psychiatry 78:620-3. 2007
  10. doi request reprint Reversible dyscognition in patients with a unilateral, middle fossa arachnoid cyst revealed by using a laptop based neuropsychological test battery (CANTAB)
    Johan Torgersen
    Department of Anaesthesiology and Intensive Care, Haukeland University Hospital, Bergen, Norway
    J Neurol 257:1909-16. 2010

Collaborators

Detail Information

Publications35

  1. ncbi request reprint A population-based study of intracranial arachnoid cysts: clinical and neuroimaging outcomes following surgical cyst decompression in children
    Christian A Helland
    Section for Neurosurgery, Department of Surgical Sciences, University of Bergen, Bergen, Norway
    J Neurosurg 105:385-90. 2006
    ..In the present study the authors describe long-term clinical and neuroimaging results in children with intracranial arachnoid cysts, treated in accordance with the authors' policy of performing surgery in most of these cases...
  2. ncbi request reprint Visual attention in patients with intracranial arachnoid cysts
    Hilde Gundersen
    Dept of Biological and Medical Psychology, University of Bergen, 5021, Bergen, Norway
    J Neurol 254:60-6. 2007
    ..To investigate whether intracranial arachnoid cysts (AC) compromise visual attention and if so, whether surgical cyst decompression leads to improvement in visual attention performance...
  3. pmc Arachnoid cysts do not contain cerebrospinal fluid: A comparative chemical analysis of arachnoid cyst fluid and cerebrospinal fluid in adults
    Magnus Berle
    Institute of Medicine, University of Bergen, 5021 Bergen, Norway
    Cerebrospinal Fluid Res 7:8. 2010
    ..Such comparative analysis can shed further light on the mechanisms for filling and sustaining of ACs...
  4. ncbi request reprint Verbal laterality and handedness in patients with intracranial arachnoid cysts
    Knut Wester
    Department of Neurosurgery, University of Bergen, School of Medicine, Haukeland University Hospital, 5021 Bergen, Norway
    J Neurol 250:36-41. 2003
    ..It is further concluded that, although such cysts are congenital, the pressure from the cyst on the adjacent brain is not strong, nor persistent enough to cause a pathological left-handedness...
  5. doi request reprint Intracranial arachnoid cysts--do they impair mental functions?
    Knut Wester
    Section for Neurosurgery, Dept of Surgical Sciences, University of Bergen, 5021, Bergen, Norway
    J Neurol 255:1113-20. 2008
    ..Radiologically, most arachnoid cysts appear to be expansive lesions, and functional imaging has shown that arachnoid cysts may cause a reorganization of cortical functions...
  6. ncbi request reprint Auditory based neuropsychology in neurosurgery
    Knut Wester
    Section for Neurosurgery, Department of Surgical Sciences, University of Bergen, Norway
    Hear Res 238:133-8. 2008
    ..These observations constitute strong evidence in favour of surgical decompression...
  7. pmc A population based study of intracranial arachnoid cysts: clinical and neuroimaging outcomes following surgical cyst decompression in adults
    Christian A Helland
    Section for Neurosurgery, Department of Surgical Sciences, University of Bergen, and Haukeland University Hospital, Bergen, Norway
    J Neurol Neurosurg Psychiatry 78:1129-35. 2007
    ..We have gradually adopted a liberal attitude towards surgical decompression of arachnoid cysts. This study describes the results from our institution...
  8. doi request reprint Maze learning in patients with intracranial arachnoid cysts
    Elisabeth Isaksen
    Department of Surgical Sciences, University of Bergen, Bergen, Norway
    Acta Neurochir (Wien) 155:841-8; discussion 848. 2013
    ..The aim was to find out whether temporal cysts affect maze learning and if surgical cyst decompression improves maze performance...
  9. pmc Intracystic pressure in patients with temporal arachnoid cysts: a prospective study of preoperative complaints and postoperative outcome
    Christian A Helland
    Department of Surgical Sciences, Section for Neurosurgery, University of Bergen, Norway
    J Neurol Neurosurg Psychiatry 78:620-3. 2007
    ..We wished to investigate the relationship between intracystic pressure, preoperative complaints and postoperative symptom relief in adult patients operated on for a unilateral temporal AC...
  10. doi request reprint Reversible dyscognition in patients with a unilateral, middle fossa arachnoid cyst revealed by using a laptop based neuropsychological test battery (CANTAB)
    Johan Torgersen
    Department of Anaesthesiology and Intensive Care, Haukeland University Hospital, Bergen, Norway
    J Neurol 257:1909-16. 2010
    ..The improvements were detected on the tests sensitive to temporal lobe problems only, not on the tests more sensitive to frontal lobe affection. This establishes construct validity for CANTAB for the first time in this population...
  11. doi request reprint Increased NKCC1 expression in arachnoid cysts supports secretory basis for cyst formation
    Christian A Helland
    Department of Surgical Sciences, Section for Neurosurgery, University of Bergen, 5021 Bergen, Norway
    Exp Neurol 224:424-8. 2010
    ..Based on these findings, we hypothesize that selective NKCC1 inhibitors could be used in preventing expansion of temporal AC...
  12. doi request reprint Lessons learned by personal failures in aneurysm surgery: what went wrong, and why?
    Knut Wester
    Section for Neurosurgery, Department of Surgical Sciences, University of Bergen, 5021, Bergen, Norway
    Acta Neurochir (Wien) 151:1013-24. 2009
    ..To analyse the intraoperative complications of a single neurosurgeon, with emphasis on devastating intraoperative incidents, and how they possibly could have been avoided...
  13. pmc Quantitative proteomics comparison of arachnoid cyst fluid and cerebrospinal fluid collected perioperatively from arachnoid cyst patients
    Magnus Berle
    Department of Clinical Science, University of Bergen, Bergen, Norway
    Fluids Barriers CNS 10:17. 2013
    ..The aim of this study was to compare the protein content of arachnoid cysts and cerebrospinal fluid by quantitative proteomics to increase the understanding of arachnoid cysts...
  14. ncbi request reprint Monozygotic twins with mirror image cysts: indication of a genetic mechanism in arachnoid cysts?
    Christian A Helland
    Section for Neurosurgery, Department of Surgical Sciences, University of Bergen, Bergen, Norway
    Neurology 69:110-1. 2007
  15. ncbi request reprint A population-based study of neurosurgical and endovascular treatment of ruptured, intracranial aneurysms in a small neurosurgical unit
    Christian A Helland
    Department of Surgical Sciences, Section for Neurosurgery, University of Bergen, Bergen, Norway
    Neurosurgery 59:1168-75; discussion 1175-6. 2006
    ..We think that the results of small centers, such as ours, may also be of some interest...
  16. ncbi request reprint Arachnoid cysts in adults: long-term follow-up of patients treated with internal shunts to the subdural compartment
    Christian A Helland
    Section for Neurosurgery, Department of Surgical Sciences, University of Bergen, N 5021 Bergen, Norway
    Surg Neurol 66:56-61; discussion 61. 2006
    ..The aim of the present study was to investigate the long-term results of this procedure...
  17. doi request reprint Location, sidedness, and sex distribution of intracranial arachnoid cysts in a population-based sample
    Christian A Helland
    Department of Neurosurgery, Haukeland University Hospital, Bergen, Norway
    J Neurosurg 113:934-9. 2010
    ..The aim of this study was to examine the distribution of intracranial arachnoid cysts in a large and unselected patient population with special emphasis on sidedness and sex distribution...
  18. pmc Benign external hydrocephalus: a review, with emphasis on management
    Sverre Morten Zahl
    Department of Neurosurgery, Haukeland University Hospital, Bergen, Norway
    Neurosurg Rev 34:417-32. 2011
    ..To verify that this truly is a benign condition, we suggest that future research on external hydrocephalus should focus on the long-term effects of surgical treatment as opposed to conservative management...
  19. ncbi request reprint Arachnoid cysts cause cognitive deficits that improve after surgery
    Maria Baroey Raeder
    Department of Neurosurgery, Haukeland University Hospital, Bergen, Norway
    Neurology 64:160-2. 2005
    ..The patients improved their performance from preoperative to postoperative testing, whereas the control subjects did not show a similar improvement...
  20. doi request reprint Differences in anatomical distribution, gender, and sidedness between ruptured and unruptured intracranial aneurysms in a defined patient population
    Mads Aarhus
    Department of Surgical Sciences, University of Bergen, Norway
    Acta Neurochir (Wien) 151:1569-74. 2009
    ..The aim of the study was to examine the anatomical distribution of ruptured and unruptured intracranial aneurysms in a defined population...
  21. doi request reprint Organisation of traumatic head injury management in the Nordic countries
    S Sollid
    Department of Neurosurgery, University Hospital of North Norway, N 9038 Tromsø, Norway
    Emerg Med J 26:769-72. 2009
    ....
  22. doi request reprint What is the pressure in chronic subdural hematomas? A prospective, population-based study
    Terje Sundstrøm
    Department of Neurosurgery, Haukeland University Hospital, Bergen, Norway
    J Neurotrauma 29:137-42. 2012
    ..A mean subdural pressure of 15.2 cm H(2)O is probably within the range of a normal ICP...
  23. pmc Prehospital use of cervical collars in trauma patients: a critical review
    Terje Sundstrøm
    1 Department of Biomedicine, University of Bergen, Bergen, Norway
    J Neurotrauma 31:531-40. 2014
    ..Conclusively, we propose a safe, effective strategy for prehospital spinal immobilization that does not include routine use of collars...
  24. pmc Protein profiling reveals inter-individual protein homogeneity of arachnoid cyst fluid and high qualitative similarity to cerebrospinal fluid
    Magnus Berle
    Institute of Medicine, University of Bergen, 5021 Bergen, Norway
    Fluids Barriers CNS 8:19. 2011
    ..abstract:..
  25. ncbi request reprint Head injury mortality in the Nordic countries
    Terje Sundstrøm
    Department of Neurosurgery, Haukeland University Hospital, Bergen, Norway
    J Neurotrauma 24:147-53. 2007
    ..This study demonstrates considerable differences in and between the Nordic countries regarding TBI mortality. Preventive measures and implementation of regional guidelines are needed to assure a positive development in the future...
  26. pmc Microarray-based gene expression profiling and DNA copy number variation analysis of temporal fossa arachnoid cysts
    Mads Aarhus
    Centre for Medical Genetics and Molecular Medicine, Haukeland University Hospital, NO 5021 Bergen, Norway
    Cerebrospinal Fluid Res 7:6. 2010
    ..CONCLUSIONS: Extending results of previous anatomical studies, the present study has identified a small subset of differentially expressed genes and DNA alterations in arachnoid cysts compared to normal arachnoid membrane...
  27. ncbi request reprint Full remission of tardive dyskinesia following general anaesthesia
    Mads Johnsen
    Department of Neurosurgery, Haukeland University Hospital, 5021 Bergen, Norway
    J Neurol 249:622-5. 2002
    ..After a minor orthopaedic operation under general anaesthesia, the dyskinesia disappeared completely, even with the deep brain stimulation turned off. The remission has now lasted for 41 months...
  28. ncbi request reprint Shunt revisions in children--can they be avoided? Experiences from a population-based study
    Per Ø Enger
    Department of Neurosurgery, Haukeland University Hospital, Bergen, Norway
    Pediatr Neurosurg 41:300-4. 2005
    ..The study does not deal with shunt infections...
  29. ncbi request reprint Mild head injuries: impact of a national strategy for implementation of management guidelines
    Kay Müller
    Department of Neurosurgery, University Hospital of North Norway, University of Bergen
    J Trauma 55:1029-34. 2003
    ..A national survey in 1996 showed insufficient routines for management of patients with mild head injuries in Norwegian hospitals. Since then, the Scandinavian Guidelines for Management of Mild Head Injuries have been published...
  30. ncbi request reprint [Scandinavian guidelines for prehospital management of severe traumatic brain injury]
    Snorre Sollid
    Nevrokirurgisk avdeling, Universitetssykehuset Nord Norge, 9038 Tromsø
    Tidsskr Nor Laegeforen 128:1524-7. 2008
    ..In the present article members of the Scandinavian Neurotrauma Committee present recommendations on prehospital management of traumatic brain injury adapted to the infrastructure of the Nordic region...
  31. ncbi request reprint [Scandinavian guidelines on the pre-hospital management of traumatic brain injury]
    Niels Juul
    Arhus Universitetshospital, Arhus Sygehus, Anaestesiafdelingen, DK 8000 Arhus
    Ugeskr Laeger 170:2337-41. 2008
    ..This article, which was written by members of the Scandinavian Neurotrauma Committee, presents recommendations on the pre-hospital management of traumatic brain injury adapted to the infrastructure of Scandinavia...
  32. ncbi request reprint [Impact of Scandinavian guidelines on management of mild head injuries]
    Kay Müller
    Nevrokirurgisk avdeling, Universitetssykehuset Nord Norge, 9038 Tromsø
    Tidsskr Nor Laegeforen 126:1205-7. 2006
    ..A national survey in 1996 showed insufficient routines for management of patients with mild head injuries in Norwegian hospitals. Since then, the Scandinavian guidelines for management of mild head injuries have been published...
  33. ncbi request reprint [Deaths from traumatic brain injury in the Nordic countries, 1987-2000]
    Terje Sundstrøm
    Det medisinske fakultet, Universitetet i Bergen
    Tidsskr Nor Laegeforen 125:1310-2. 2005
    ..In the context of a joint Nordic initiative regarding future management of patients with severe TBI, it was of interest to look into the magnitude of the problem and the most recent developments...
  34. ncbi request reprint [Intracranial tumors in children]
    Eirik Helseth
    Nevrokirurgisk avdeling, Rikshospitalet 0027 Oslo
    Tidsskr Nor Laegeforen 123:451-5. 2003
  35. doi request reprint Routine measurement of head circumference as a tool for detecting intracranial expansion in infants: what is the gain? A nationwide survey
    Sverre Morten Zahl
    Department of Surgery, Voss Hospital, Voss, Norway
    Pediatrics 121:e416-20. 2008
    ..The aim of the present study was to investigate the importance of routine head circumference measurements in the detection of intracranial expansive conditions, because only fragmented evidence exists in favor of this routine...