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Interobserver agreement for noninvasive bladder pressure flow recording with penile cuff
Frank McArdle1, Becky Clarkson, Wendy Robson
1Department of Medical Physics, Freeman Hospital, Newcastle upon Tyne, United Kingdom. Frank.McArdle@nuth.nhs.uk
The Journal of Urology
|September 19, 2009
Summary
The penile cuff test shows high agreement for diagnosing bladder outlet obstruction in men with lower urinary tract symptoms, even with novice users after brief training.
Area of Science:
- Urology
- Medical Devices
- Diagnostic Testing
Background:
- Lower urinary tract symptoms (LUTS) affect many men.
- Accurate diagnosis of bladder outlet obstruction is crucial for effective treatment.
- Noninvasive diagnostic tools are sought to improve clinical assessment.
Purpose of the Study:
- To evaluate the interpretational variability of noninvasive penile cuff measurements.
- To compare experienced and novice users in assessing bladder pressure and urine flow.
- To determine the reliability of the penile cuff test for diagnosing bladder outlet obstruction.
Main Methods:
- Urologists at 6 sites used the penile cuff test in 30 men with LUTS.
- Measurements of maximum flow rate and cuff interruption pressure were performed.
- Interobserver variability was assessed by comparing novice and expert interpretations.
Main Results:
- Complete agreement on obstruction categorization was achieved in 77% of cases, rising to 86% with boundary adjustments.
- Interobserver variability for flow rate was +/- 1.7 ml/sec and for pressure was +/- 13 cm H2O.
- Discrepancies were infrequent and occurred similarly between experts and novices, often with complex recordings.
Conclusions:
- The penile cuff test demonstrates excellent agreement in measurements and categorization.
- A short training period is sufficient for reliable use by novice clinicians.
- The penile cuff test can be readily integrated into the assessment of men with LUTS.
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