• World Neurosurg · Jan 2023

    Review Meta Analysis

    Failure of internal cerebrospinal fluid shunt: a systematic review and meta-analysis of the overall prevalence in adult.

    • Rado Malalatiana Ramasy Razafindratovo, Sylvie Chevret, and Charles Champeaux-Depond.
    • Service de biostatistique et information médicale, Hôpital Saint-Louis, Paris, France; INSERM U1153, Statistic and Epidemiologic Research Center Sorbonne Paris Cité (CRESS), ECSTRRA Team, Université de Paris, Paris, France.
    • World Neurosurg. 2023 Jan 1; 169: 203020-30.

    ObjectiveReported rates of failures of internal cerebrospinal fluid shunt (ICSFS) vary greatly from less than 5% to more than 50% and no meta-analysis to assess the overall prevalence has been performed. We estimated the failure rate after ICSFS insertion and searched for associated factors.MethodsSix databases were searched from January 1990 to February 2022. Only original articles reporting the rate of adult shunt failure were included. Random-effects meta-analysis with a generalized linear mixed model method and logit transformation was used to compute the overall failure prevalence. Subgroup analysis and meta-regression were implemented to search for associated factors.ResultsOf 1763 identified articles, 46 were selected, comprising 70,859 ICSFS implantations and 13,603 shunt failures, suggesting an accumulated incidence of 19.2%. However, the calculated pooled prevalence value and its 95% confidence interval (CI) were 22.7% (95% CI, 19.8-5.8). The CI of the different estimates did not overlap, indicating a strong heterogeneity confirmed by a high I2 of 97.5% (95% CI, 97.1-97.8; P < 0.001; τ2 = 0.3). Ninety-five percent prediction interval of shunt failure prevalence ranged from 8.75% to 47.36%. A meta-regression of prevalence of publication found a barely significant decreasing failure rate of about 2% per year (-2.11; 95% CI, -4.02 to -0.2; P = 0.031).ConclusionsDespite being a simple neurosurgical procedure, ICSFS insertion has one of the highest risk of complications, with failure prevalence involving more than 1 patient of 5. Nonetheless, all efforts to lower this high level of shunt failure seem to be effective.Copyright © 2022 Elsevier Inc. All rights reserved.

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