Multicenter Study on the Correlation Between Transperineal Ultrasound Meaurements and Stress Urinary Incontinence Severity

ABSTRACT Purpose This study investigates the correlation between clinical characteristics, ultrasound measurements, and the severity of stress urinary incontinence (SUI) in women, aiming to identify key transperineal ultrasound measurements that can guide clinical management of SUI. Methods The study was conducted with 519 women diagnosed with urinary incontinence from three hospitals in Fujian Province, China, who underwent clinical assessment and transperineal ultrasound examination from November 2019 and May 2024. Ultrasound measurements, including temporal and morphological metrics, were analyzed in relation to SUI severity, categorized as slight, moderate, or severe. Statistical analyses included Spearman's rank correlation and logistic regression. Results Among the 314 women with SUI, significant correlations were found between ultrasound measurements and SUI severity. The duration of maximum contraction showed the strongest correlation with severity, followed by twitch count during sustained contraction. Logistic regression revealed that age (OR = 1.052, p = 0.018) and larger differences in LHA between Valsalva and rest (OR = 1.227, p = 0.035) were risk factors for moderate‐to‐severe SUI, while longer the duration of maximum contraction reduced the risk (OR = 0.924, p < 0.001). Conclusion Transperineal ultrasound was proved to be a noninvasive, objective method for the evaluation and management of SUI. Key findings underscored the potential of ultrasound in advancing pelvic floor health and guiding personalized pelvic floor muscle training. Further research is needed to standardize these measurements and validate their clinical utlity.