Objective:To evaluate the efficacy of clinical application of pelvic floor ultrasound and muscle electrophysiological examination in treating female stress urinary incontinence(FSUI). Methods:Pelvic floor ultrasound and pelvic floor muscle electrophysiological examination were performed on 77 women with FSUI(case group) and 41 healthy women without FSUI(control group). The bladder neck with or without funnel was evaluated in resting state. Dynamic changes in the bladder neck and posterior angle of the bladder and the proximal urethra were observed. Type Ⅰ/Ⅱ pelvic floor muscle fibers strength and fatigue were detected with electrophysiological testing. Correlation between every parameter and FSUI was compared and analyzed. Results:Funnel formation rate of the bladder neck at resting state

y axis moving distance(Δy) of the bladder neck from resting state to valsalva maneuver

posterior angle of the bladder in resting state(α)

posterior angle of the bladder after valsalva maneuver(β) and rotation degree of the proximal urethra(γ) of case group were greater than those of the control group(P<0.05). x axis moving distance(Δx) from resting state to valsalva maneuver of case group was slightly greater than that of the control group

but without statistical significance differences(P >0.05). There was no statistical difference in type Ⅰ/Ⅱ muscle fibers strength and fatigue between case group and control group(P >0.05)

but the abnormal rate of both groups was significantly high. With pelvic ultrasound and muscle electrophysiological examination parameters as independent variables

and FSUI occurrence as dependent variable

the multiple factors logistic regression analysis found that Δy(OR=5.444

95%CI=1.009 to 29.381

P=0.049)

funnel formation of the bladder neck(OR=2.789

95%CI=1.144 to 6.803

P=0.024)and the type Ⅰ pelvic floor muscle fibers strength(OR=0.372

95%CI=0.150 to 0.924

P=0.033) were significantly related to FSUI occurrence. Conclusion : Pelvic floor ultrasound can observe FSUI pelvic anatomy change real-time and dynamically

providing rich imaging information. Pelvic floor muscle electrophysiological examination can evaluate the female pelvic floor muscle function at early stage effectively;its abnormal parameters can be checked before symptoms of FSUI occur. Pelvic floor ultrasound combined with muscle electrophysiological examination can provide comprehensive evaluation on pelvic floor of FSUI patients

which is great importance in prediction

diagnosis

clinical classification and treatment of FSUI.