Background Risk Factors Associated with Shunt Intervention for Possible Idiopathic Normal Pressure Hydrocephalus: A Nationwide Hospital-Based Survey in Japan
Аннотация:Background: Patients with idiopathic normal-pressure hydrocephalus (iNPH) are typically older adults with multiple comorbidities that are associated with a reduction in the efficacy of iNPH treatment via cerebrospinal fluid (CSF) shunt placement.Objective: The present study aimed to investigate the effectiveness of CSF shunt for iNPH using data from a nationwide epidemiological survey in Japan.Methods: We examined 1,423 patients (581 women) aged ≥60 years (median age [25%-75%]: 77 [73-80] years) who were diagnosed with iNPH following a hospital visit in 2012.Patients who experienced an improvement of at least one modified Rankin Scale (mRS) grade after the CSF shunt were classified as "improvement" while the remaining patients were classified as "non-improvement."The efficacy of the shunt intervention (n = 842) was analyzed using a binomial logistic regression analysis.Results: An analysis of risk factors associated with shunt placement in patients with mRS grade 2 at study entry revealed an association between comorbid chronic ischemic lesions (odds ratio [OR], 2.28; 95% confidence interval [CI], 1.11-4.67;p = 0.025) and cervical spondylosis (OR, 3.62; 95% CI,; p = 0.027).Patients with mRS grade 3 at study entry had an association with comorbid Alzheimer's disease (OR, 3.02; 95%CI,; p = 0.003).
