RÉSUMÉ
Objective To detect the clinical effect of ventriculo-peritoneal shunt in elderly patients with idiopathic normal pressure hydrocephalus. Methods Thirty-five patients with idiopathic normal pressure hydrocephalus underwent ventriculo-peritoneal shunt and admitted to our hospital from May 2006 and May 2010 were employed in our study; their medical history,CT and MRI scan data,and results of CSF samples obtained by lumbar puncture were retrospectively analyzed; their effects on outcome ofventriculo-peritoneal shunt were analyzed. Results The 6-12 months' follow-up indicated that notable effect was noted in 16 patients, effective result in 12 and ineffective result in 7. The postoperative effective rate in patients with senil intelligence disorder was 58.0％; that in patients with gait instability was 85.0％; and that in patients with urinary incontinence was 81.5％. The imaging examination showed that all the 33 patients had ventricular system shrink to some extent. Conclusion Ventriculo-peritoneal shunt is the most effective method in treating aged patients with idiopathic normal pressure hydrocephalus.