| Continuous non-invasive measurement of bladder voiding pressure using an experimental constant low-flow test. | |
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MedLine Citation:
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PMID: 22190105 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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PURPOSE: We developed a prototype device using an automatically controlled inflatable penile cuff to measure bladder voiding pressure continuously and non-invasively in men. The purpose of this study was to validate the pressure measurements made by this device by comparison to those during simultaneous invasive PFS. METHODS: A device was developed to automatically modulate flow rate by controlling pressure in a penile cuff. Men undergoing conventional urodynamics studies were recruited to have an additional fill-void cycle whilst using the new device. We report on 40 men using a standardized protocol. Pressure measured by this device was compared with simultaneous vesical pressure by evaluating maximum pressure during voiding, and calculating the root mean square (RMS) difference between p(cuff) and p(ves) . RESULTS: We recruited 80 men of whom 18 were excluded, 22 were involved in initial development phase and 40 in the standard protocol. Mean (SD) difference between maxima of p(cuff) and p(ves) (1.3 (15.6) cmH(2) O) was not significant. In 20 (50%) men, agreement between p(cuff) and p(ves) throughout the void was moderate or good (RMS difference <20 cmH(2) O). Causes of unsuccessful measurements were identified. CONCLUSIONS: Although a prototype device, this technique appears to be promising for continuous non-invasive bladder pressure measurement. From the results of this study a number of improvements have been recommended and implemented. The next generation of this technique will allow assessment of clinical application. Neurourol. Urodynam. © 2011 Wiley Periodicals, Inc. |
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Authors:
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Becky Clarkson; Clive Griffiths; Frank McArdle; Robert Pickard; Michael Drinnan |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-12-20 |
Journal Detail:
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Title: Neurourology and urodynamics Volume: - ISSN: 1520-6777 ISO Abbreviation: - Publication Date: 2011 Dec |
Date Detail:
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Created Date: 2011-12-22 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8303326 Medline TA: Neurourol Urodyn Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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Copyright © 2011 Wiley Periodicals, Inc. |
Affiliation:
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Department of Medical Physics, Newcastle University, Newcastle upon Tyne, UK; Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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