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Shunt survival rates by using the adjustable differential pressure valve combined with a gravitational unit (proGAV) in pediatric neurosurgery

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Abstract

Object

Overdrainage is a chronic complication in shunted pediatric patients with hydrocephalus. The use of adjustability of differential pressure (DP) valves in combination with antisiphoning devices may help to overcome this sequela and may diminish the rate of possible shunt failures. The purpose of this retrospective study is to report our experience on shunt survival and infection rate with an adjustable DP valve with integrated gravitational unit in pediatric hydrocephalus.

Methods

The proGAV consists of an adjustable differential pressure (DP) valve and a gravitational unit. During the time period of July 2004 and December 2009, a total of 237 adjustable gravitational valves were used in 203 children (age, 6.5 ± 6.54; 0–27 years). In the follow-up period, valve and shunt failures as well as rate of infection were recorded.

Results

Within the average follow-up time of 21.9 ± 10.3 months (range, 6–72 months), the valve survival rate was 83.8 %. The overall shunt survival rate including all necessary revisions was 64.3 %. Looking at the group of infants (<1 year of age) within the cohort, the valve survival rate was 77.3 % and the shunt survival rate was 60.9 %. The overall infection rate was 4.6 %.

Conclusion

In a concept of avoiding chronic overdrainage by using the proGAV in hydrocephalic children, we observed a good rate of valve and shunt survival. Compared to previous reported series, we experienced the proGAV as a reliable tool for the treatment of pediatric hydrocephalus.

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Authors and Affiliations

  1. Pediatric Neurosurgery, Charité Universitätsmedizin Berlin, Berlin, Germany

    Ulrich-W Thomale, Anna F. Gebert, Hannes Haberl & Matthias Schulz

  2. Arbeitsbereich Pädiatrische Neurochirurgie, Charité Universitätsmedizin, Campus Virchow Klinikum, Augustenburger Platz 1, Berlin, 13353, Germany

    Ulrich-W Thomale

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  1. Ulrich-W Thomale
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  2. Anna F. Gebert
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  3. Hannes Haberl
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  4. Matthias Schulz
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Correspondence to Ulrich-W Thomale.

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Thomale, UW., Gebert, A.F., Haberl, H. et al. Shunt survival rates by using the adjustable differential pressure valve combined with a gravitational unit (proGAV) in pediatric neurosurgery. Childs Nerv Syst 29, 425–431 (2013). https://doi.org/10.1007/s00381-012-1956-9

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  • DOI: https://doi.org/10.1007/s00381-012-1956-9

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