Clinical analysis of urodynamics in female patients with stress urinary incontinence
Objective To investigate the characteristics of urinary flow rate and urodynamics in female with stress urinary incontinence(SUI).Method A total of 141 female patients with SUI admitted to the gynecological outpatient department of Beijing Obstetrics and Gynecology Hospital Affiliated to Capital Medical University from October 2017 to October 2019 were selected.The parameters of urine flow rate,such as maximum urine flow rate,average urine flow rate,urination time,urine flow time,peak time of maximum urine flow rate and residual urine volume were measured by weight-time method(load-bearing method)and urethral catheterization method.If urine does not flow out from the urethral opening during the urodynamic examination,it is considered positive.Among 141 patients with stress urinary incontinence,93 cases with positive urodynamic test results were selected as the positive group,and 48 cases with negative test results were selected as the negative group.The age,urinary flow rate parameters,and urinary flow rate curves of the two groups were compared to explore their relationship with positive urodynamic test results.Result The results of univariate analysis showed that compared with the negative group,the positive group had a older age,higher proportion of maximum urine flow rate,average urine flow rate,and urine flow rate curve non fluctuation,shorter urine flow time,and statistically significant differences(P<0.05).There was no statistically significant difference between the two groups in terms of urine output,urination time,peak time of maximum urine flow rate,and residual urine output(P>0.05).The results of multivariate logistic regression analysis showed that age and urine flow rate curve were independent risk factors affecting positive test results(P<0.05).Patients with older age and stable urine flow rate curve had a higher risk of positive test results.Conclusion The age and urination mode of patients with SUI are the main factors affecting the results of urodynamics examination.