In this community, NPH is relatively rare with an incidence approximating that of progressive supranuclear palsy in this population. Whereas early gait improvement was common, only one-third of patients enjoyed continued improvement by 3 years; cognition or urinary incontinence was even less responsive long term. Baseline postural instability predicted poor outcome. Clinicians should balance potential benefits of shunting against the known risks.
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Klassen et al. (2011) studied this question.
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