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A novel clinical classification for male urinary incontinence: MI-CRONS

Introduction: The aim of this study is to develop a new simple and practical classification of male urinary incontinence (UI) based on the clinical features and type of urinary incontinence.

Materials & methods: MI-CRONS classification is a system based on severity of incontinence and patients’ characteristics. Clinical evaluation of incontinence severity is based on preservation of voiding, proportion of void/lost urine, absorbable device usage, level of physical efforts that causes urine loss and nocturnal incontinence. Following patients’ characteristics of patients were included in classification system: history of radical prostatectomy, history of pelvic radiation, surgery for prostatic obstruction, neurogenic or non-neurogenic bladder disorders, and urethral strictures and disorders. This MI-CRONS classification system uses five uppercase Latin letters as follows: Male Incontinence — Cancer, Radiation, Obstruction, Neurogenic, Stricture. The classification could be used for stress, urgency, and mixed UI forms.

Results: The new MI-CRONS classification system was applied to 85 of 86 patients evaluated in this retrospective study. Patients were classified by MI-CRONS to estimate an inclusiveness and complicity of proposed classification only. One patient was not classified using the new MI-CRONS classification due to history of bladder exstrophy and augmentation cystoplasty. Most of the men studied had a stress form of urinary incontinence and the most common types were 2 (n = 18) and 3 (n = 17) after radical prostatectomy.

Conclusion: The MI-CRONS has demonstrated prompt potential for classifying male incontinence of any type. The classification is a simple tool to describe these patients and could be useful for daily practice and clinical trials. Although further multicenter studies are needed to evaluate the predictive value of this tool. A Delphi consensus would be proposed with international experts for the further development of MI-CRONS.

George Kasyan1,2,3 Bagrat Grigoryan1,2 Dmitry Pushkar1,2

  1. Botkin’s Hospital Moscow Urological Center, Moscow, Russia
  2. Urology Department of Russian University of Medicine, Moscow, Russia
  3. Department of Urology, Yerevan State Medical University named after M. Heratsi, Yerevan, Armenia
Source: George Kasyan, Bagrat Grigoryan, Dmitry Pushkar. A novel clinical classification for male urinary incontinence: MI-CRONS. Continence Reports. Volume 10. 2024. 100051, ISSN 2772-9745. https://doi.org/10.1016/j.contre.2024.100051.