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Disposable bedpads for incontinence: predicting their clinical leakage properties using laboratory tests
A M Cottenden1, G E Dean, R J Brooks
1Department of Medical Physics and Bioengineering, University College London, England, UK. a.cottenden@medphys.ucl.ac.uk
Medical Engineering & Physics
|October 17, 1998
Summary
Laboratory tests can predict disposable incontinence bedpad leakage performance. A combination of absorption capacity and time tests accurately predicted user satisfaction for bedpads used as sole protection.
Area of Science:
- Medical Devices
- Materials Science
- Urology
Background:
- Disposable incontinence bedpads are widely used for managing urinary incontinence.
- Assessing the real-world leakage performance of these products is crucial for user comfort and product development.
- Current laboratory tests for bedpad evaluation may not accurately reflect clinical performance.
Purpose of the Study:
- To identify laboratory tests that can reliably predict the leakage performance of disposable incontinence bedpads in clinical use.
- To compare the predictive accuracy of various laboratory tests against actual user-reported and objectively measured leakage data.
- To determine the optimal laboratory testing strategies for different bedpad usage scenarios (sole protection vs. back-up).
Main Methods:
- A multi-centre study involving 95 subjects who used six different bedpad products for one week each.
- Clinical data collection included user/carer acceptability of leakage performance and objective measurement of leakage severity based on used bedpad weight.
- Comparison of clinical data with results from 16 routine laboratory tests performed in three hospital laboratories to assess correlation and predictive accuracy.
Main Results:
- No single laboratory test accurately predicted bedpad performance when used as sole protection.
- A combination of an absorption capacity test and an absorption time test predicted user-reported acceptable leakage performance within +/- 8 percentage points for all products.
- A specific absorption capacity test was most effective for bedpads used as back-up, predicting acceptable leakage performance within +/- 5 percentage points.
Conclusions:
- Combined absorption capacity and time laboratory tests offer improved prediction of bedpad leakage performance for sole protection.
- A distinct absorption capacity test is valuable for evaluating bedpads used as back-up protection.
- These findings can inform the development of more accurate and clinically relevant laboratory evaluations for incontinence bedpads.