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Doctor reading their notes in relation to the article: Risk of overactive bladder associated with dementia medications
10 January 2022
Overactive Bladder
Risk of overactive bladder associated with dementia medications

A study from the University of Houston College of Pharmacy, and published in the Journal of the American Geriatrics Society, has evaluated the risk of overactive bladder (OAB) as a side effect of cholinesterase inhibitor (ChEI) drugs taken for dementia and Alzheimer’s disease. The research was based on the dissertation work of the study’s first author Prajakta Masurkar.

Dementia is a group of symptoms associated with a decline in memory, reasoning or other thinking skills. Alzheimer’s disease is the most common cause of dementia, accounting for 60%-80% of cases. ChEI drugs, including donepezil, galantamine and rivastigmine, increase communication between nerve cells to enhance cognition.

Rajender R. Aparasu, Mustafa and Sanober Lokhandwala Endowed Professor of Pharmacy and Department Chair of Pharmaceutical Health Outcomes and Policy commented, “the study found that the risk of overactive bladder varies across individual ChEIs.”

“Using a national cohort of older adults with dementia, we also found that donepezil was associated with a 13% increased risk of OAB compared to rivastigmine, whereas there was no differential risk of OAB with galantamine and rivastigmine.”

Using Medicare data, the study examined 524,975 adults (aged 65 and older) with dementia who were users of ChEIs (donepezil 80.72%, rivastigmine 16.41%, galantamine 2.87%). The primary outcome of interest was OAB diagnosis or prescription of antimuscarinics, drugs which help correct overactive bladder, within six months of ChEI initiation.

While some studies have been conducted to evaluate the effects of all ChEIs and antimuscarinic use, few studies have been conducted regarding the effects of individual ChEIs on the risk of OAB. Previous studies have found that the use of ChEIs is associated with an increased risk of receiving an antimuscarinic drug.

This study opens a new door.

Aparasu commented, “the findings suggest the need to understand and manage medication-related morbidity in older adults with dementia.”

Read the full news story online.

Read more news from The Bladder Interest Group now.

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