umu.sePublications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
An adjustable CSF shunt: advices for clinical use.
Umeå University, Faculty of Medicine, Department of Radiation Sciences.
2003 (English)In: Acta Neurologica Scandinavica, ISSN 0001-6314, E-ISSN 1600-0404, Vol. 108, no 1, 38-42 p.Article in journal (Refereed) Published
Abstract [en]

OBJECTIVES: The opening pressure and the resistance of a CSF shunt are essential for clinical use in order to set the proper opening pressure and to determine the shunt function in vivo. We find it of vital importance to validate and supplement the product description given by the manufacturer. The in vitro properties of a newly introduced, adjustable differential pressure valve with a siphon-preventing device (Strata valve) was compared with its predecessor (Delta valve).

METHODS: An automated, computerized experimental set-up based on regulation of pressure, built into an incubator at 37 degrees C, was used. Opening pressure, resistance and siphon preventing properties were determined. Six brand-new shunts of each type with catheters were tested. The Delta valves were at a performance level of 1.5.

RESULTS: The hydrodynamic properties of the Strata and Delta valves were similar. The anti-siphoning device was functioning for all valves. The estimated mean resistance for Delta and Strata shunts was 2.6 +/- 0.4 and 2.2 +/- 1.0 mmHg/ml/min, respectively. The mean opening pressure for the five performance levels of the Strata shunt are: 3.3, 5.1, 7.7, 10.7 and 13.1 mmHg. There may however, be considerable variations between the shunts.

CONCLUSIONS: The Strata shunt is a properly working adjustable valve with anti-siphoning device that showed good reproducibility concerning opening pressure and resistance. At performance level 1.5, the new Strata shunt was similar to its predecessor concerning opening pressure and resistance. The given values of the different opening pressures and resistance could be used for in vivo testing of the valve function with a standard lumbar CSF infusion test.

Place, publisher, year, edition, pages
2003. Vol. 108, no 1, 38-42 p.
National Category
Neurology
Identifiers
URN: urn:nbn:se:umu:diva-135128PubMedID: 12807391OAI: oai:DiVA.org:umu-135128DiVA: diva2:1096765
Available from: 2017-05-19 Created: 2017-05-19 Last updated: 2017-05-19

Open Access in DiVA

No full text

PubMed

Search in DiVA

By author/editor
Eklund, Anders
By organisation
Department of Radiation Sciences
In the same journal
Acta Neurologica Scandinavica
Neurology

Search outside of DiVA

GoogleGoogle Scholar

Altmetric score

Total: 12 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf