Feb 5, 2010

Rivastigmine for the treatment of dementia in patients with progressive supranuclear palsy: Clinical observations as a basis for power calculations and safety analysis

Alzheimer's & Dementia : the Journal of the Alzheimer's Association
Iuga LiepeltDaniela Berg


Cognitive decline and dementia are present in about 50% of patients with progressive supranuclear palsy (PSP). Based on the known involvement of the cholinergic system in PSP patients, and because rivastigmine, in contrast to other cholinesterase inhibitors, inhibits both acetylcholinesterase and butyrylcholinesterase, we discuss clinical observations of five patients suffering from PSP and dementia who were all treated with rivastigmine over a period of 3 to 6 months. We found a slight improvement in specific cognitive function that may justify further controlled studies. A calculation of sample size revealed that a study on the effect of rivastigmine in PSP should include about 31 patients to detect a significant effect. In subtests, meaningful results can be obtained with even lower numbers (five patients for a verbal fluency test, and 14 patients for a logical memory task).

  • References19
  • Citations18


Mentioned in this Paper

Senile Paranoid Dementia
Mini-mental State Examination
Unified Parkinson's Disease Rating Scale Questionnaire
Pathogenic Aspects
Motor Performance
Progressive Supranuclear Palsy
Behavioral Symptoms

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