AI Article Synopsis
- The International Continence Society (ICS) Working Group revised the 1997 standard for pressure-flow studies to enhance the diagnosis of voiding dysfunction in adults without neurological issues, developing a new standard between May 2020 and December 2022.
- The updated standard includes new terms and parameters for objectively analyzing urethral resistance, bladder outflow obstruction, and detrusor voiding contraction, emphasizing the importance of specific parameters in pressure-flow studies.
- The WG recommends using pressure-flow plots and specific indices in clinical practice to improve diagnosis and communication in research related to voiding dysfunction among both male and female patients.
Article Abstract
Aims: The Working Group (WG), initiated by the International Continence Society (ICS) Standardisation Steering Committee and supported by the Society of Urodynamics, Female Pelvic Medicine and Urogenital Reconstruction, has revised the ICS Standard for pressure-flow studies of 1997.
Methods: Based on the ICS standard for developing evidence-based standards, the WG developed this new ICS standard in the period from May 2020 to December 2022. A draft was posted on the ICS website in December 2022 to facilitate public discussion and the comments received have been incorporated into this final release.
Results: The WG has recommended analysis principles for the diagnosis of voiding dysfunction for adult men and women without relevant neurological abnormalities. New standard terms and parameters for objective and continuous grading of urethral resistance (UR), bladder outflow obstruction (BOO) and detrusor voiding contraction (DVC) are introduced in this part 2 of the standard. The WG has summarized the theory and recommendations for the practice of pressure-flow study (PFS) for patients in part 1. A pressure-flow plot is recommended for the diagnosis of every patient, in addition to time-based graphs. Voided percentage and post void residual volume should always be included in PFS analysis and diagnosis. Only parameters that represent the ratio or subtraction of pressure and synchronous flow are recommended to quantify UR and only parameters that combine pressure and flow in a product or sum are recommended to quantify DVC. The ICS BOO index and the ICS detrusor contraction index are introduced in this part 2 as the standard. The WG has suggested clinical PFS dysfunction classes for male and female patients. A pressure-flow scatter graph including every patient's p at maximum flow (p ) with maximum flow rate (Q ) point should be included in all scientific reports considering voiding dysfunction.
Conclusion: PFS is the gold standard used to objectively assess voiding function. Quantifying the dysfunction and grading of abnormalities are standardized for adult males and females.
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| http://dx.doi.org/10.1002/nau.25187 | DOI Listing |
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