Idiopathic normal pressure hydrocephalus (iNPH) is known as a “treatable dementia”. In contrast to evident improvement of gait disturbance after surgery, improvement of dementia appears to be equivocal. Herein, we investigate shunt effectiveness on long-term care (LTC). Among 83 patients in SIN2(Study of idiopathic normal pressure hydrocephalus-2), 69 patients, whose LTC data were recorded, were subjected in this study. Data were analysed using generalized linear mixed model.
Disability in LTC significantly improved 12 months after surgery. Dementia in LTC was improved, but were not statistically significant. Random effects did not affect estimates of outcomes. Further investigations for improvement of dementia in iNPH are necessary.