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  • Title: Shunt revision for asymptomatic failure: surgical and clinical results.
    Author: Vinchon M, Fichten A, Delestret I, Dhellemmes P.
    Journal: Neurosurgery; 2003 Feb; 52(2):347-53; discussion 353-6. PubMed ID: 12535363.
    Abstract:
    OBJECTIVE: Shunt obstruction represents a permanent threat for patients with shunts, and its prevention and treatment are important parts of neurosurgeons' duties. Although there is little discussion regarding the need to reoperate for treatment of symptomatic shunt failure (SSF), the need to reoperate for treatment of asymptomatic shunt failure (ASF) is debated, as are the guidelines for the follow-up monitoring of patients with shunts. The goal of this study was to assess the effects of systematic follow-up monitoring and shunt revision for ASF; we reviewed our database to compare the results of shunt revision for ASF versus SSF. METHODS: We defined ASF as shunt failure diagnosed for an asymptomatic patient during a systematic consultation. In our institution, children who receive shunts for treatment of hydrocephalus are systematically monitored in an outpatient clinic, with clinical examinations and plain x-rays. Among 1,564 children with shunts, who were monitored for a mean of 10.7 years, 1106 (70.7%) required at least one shunt revision. The indication for the first revision was SSF in 609 cases and ASF in 305 cases; the indication was not specified in 192 cases. We studied the surgical outcomes after the first shunt revision and compared the results for SSF and ASF. RESULTS: After the first revision, shunt infections and subsequent shunt failure were significantly less frequent in the ASF group, compared with the SSF group. The interval between the first shunt revision and subsequent shunt failure was significantly longer in the ASF group. CONCLUSION: Our data support the practice of systematic follow-up monitoring for patients with shunts, for the early diagnosis and systematic treatment of ASF.
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