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Analysis of Codman microcerebrospinal fluid shunt

Axel Sandvig1,2, Kai Arnell3, Jan Malm1

  • 1Department of Pharmacology and Clinical Neurosciences, Division of Neuro, Head and Neck, Umeå University, Umeå, Sweden.

Brain and Behavior
|September 13, 2018
PubMed

Insights

Replacing the Codman microadjustable valve (CMAV) with the Codman Hakim adjustable valve shunt (CHAV) in pediatric hydrocephalus patients is safe. This study found the switch well-tolerated, with no further complications in most cases.

Area of Science:

  • Neurosurgery
  • Pediatric Neurology
  • Biomedical Engineering

Background:

  • Ventriculo-peritoneal cerebrospinal fluid (CSF) shunts are standard for pediatric hydrocephalus.
  • The Codman microadjustable valve (CMAV) is designed for pediatric use.

Purpose of the Study:

  • Analyze complications of CMAV insertion in children.
  • Evaluate complications when replacing CMAV with adult-type Codman Hakim adjustable valve shunt (CHAV).
  • Assess in vitro characteristics of CMAV and correlate with clinical performance.

Main Methods:

  • Retrospective analysis of hydrocephalic children with CMAV, some later replaced by CHAV.
  • In vitro testing of CMAV shunts (opening pressure, resistance, sensitivity, etc.).
  • Correlation of bench test results with clinical outcomes.

Main Results:

  • 27% of patients experienced early complications (infections, hygromas, dysfunction).
  • 13 children had shunts replaced over 10 years; six switched to CHAV without further issues.
  • Bench tests generally aligned with manufacturer specifications for CMAV.

Conclusions:

  • Replacing CMAV with CHAV is safe and well-tolerated in pediatric hydrocephalus.
  • In vitro findings supported the clinical performance of the CMAV.
  • The study supports the safe interchangeability of these shunt types.
Abstract

Keywords:
cerebrospinal fluidclinical retrospective study

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