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Urine flow rate curve shapes and their descriptors

Li, Rui; Zhu, Quan; Nibouche, Mokhtar; Gammie, Andrew


Rui Li

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Quan Zhu
Professor in Control Systems

Andrew Gammie


© 2018 Wiley Periodicals, Inc. Aims: To review the descriptors and definitions of urine flow rate curve shape with a view to promoting greater clarity and to propose standard terms. Methods: A search was made in the PubMed and ICS standardization documents on urine flow rate curve shape. Results: The flow shape descriptors and their definitions are summarized and presented. “Normal” was widely used for describing a bell-shaped flow curve, and “plateau” was mostly used where the ICS describe “constrictive” flow shape. The use of shape descriptors “fluctuating,” “compressive,” “tower-shaped,” and “intermittent” varied in the literature. Conclusion: This survey provides an overview of flow shape descriptors and their definitions. We suggest it is clearer to use only descriptors that describe shape alone, that is, normal, fluctuating, intermittent, and plateau, with comments on symmetry and Q max .


Li, R., Zhu, Q., Nibouche, M., & Gammie, A. (2018). Urine flow rate curve shapes and their descriptors. Neurourology and Urodynamics, 37(8), 2938-2944.

Journal Article Type Article
Acceptance Date Jun 9, 2018
Online Publication Date Jun 26, 2018
Publication Date Nov 1, 2018
Deposit Date Jun 12, 2018
Publicly Available Date Jun 26, 2019
Journal Neurourology and Urodynamics
Print ISSN 0733-2467
Electronic ISSN 1520-6777
Publisher Wiley
Peer Reviewed Peer Reviewed
Volume 37
Issue 8
Pages 2938-2944
Keywords flow shape, flow shape descriptors
Public URL
Publisher URL
Additional Information Additional Information : This is the peer reviewed version of the following article: Li, R., Quan, M., Nibouche, M. and Gammie, A. (2018) Urine flow rate curve shapes and their descriptors. Neurourology and Urodynamics. ISSN 1520-6777 , which has been published in final form at This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.


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