Objective: Early hydrocephalus and its associated conditions (intracranial pressure, size of ventricles and other neuroanatomical structures, and shunt complications) are associated with various cognitive deficits. The purpose of this study was to investigate the effect of shunt revisions (0, 1, or 2+ revisions) on cognition, specifically overall intellectual functioning (FSIQ), verbal comprehension (VCI), perceptual reasoning (PRI), working memory (WMI), and processing speed (PSI). Method: Test data from 24 Spina Bifida patients (0 shunt revisions: n = 11, 1 shunt revision, n = 7, 2+ shunt revisions: n = 6) who were referred for outpatient neuropsychological evaluation was reviewed, specifically cognitive functioning (Wechsler Intelligence Scale for Children-Fourth Edition, WISC-IV). Results: There was no statistically significant difference in FSIQ (p = 0.592), verbal comprehension (p = 0.379), perceptual reasoning (p = 0.643), working memory (p...

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