Transperineal pelvic floor ultrasonic Trace measurement of urethral funnel depth for evaluating female stress incontinence
Objective To observe the value of transperineal pelvic floor ultrasonic Trace measurement of urethral funnel depth for evaluating female stress incontinence(SI).Methods Data of 160 female SI(SI group)patients and 100 with benign renal uterine lesions(non-SI group)underwent transperineal pelvic floor ultrasound were retrospectively analyzed.The depth of urethral funnel was measured using Trace measurement under the maximum Valsalva maneuver,and large or small urethral funnel was judged according to the ratio of urethral funnel depth to urethral length.The general data and ultrasonic indexed were compared between groups.Receiver operating characteristic(ROC)curves were drawn,and the area under the curves(AUC)were calculated to assess the efficacy of urethral funnel depth and large or small urethral funnel for evaluating SI.Results Significant differences of spontaneous delivery time,posterior angle of the bladder under the maximum Valsalva maneuver,type of urethral funnel and urethral funnel depth were found between SI group and non-SI group(all P<0.05).No significant difference of patients'age,body mass index,neonatal body mass of first pregnancy,urethral length at resting-state,urethra rotation angle and bladder neck mobility under the maximum Valsalva maneuver was found between groups(all P>0.05).Taken 6.35 mm as the optimal cut-off value of urethral funnel depth,the sensitivity,specificity and AUC of SI evaluated using Trace measurement was 66.00%,83.00%and 0.862,respectively.The sensitivity,specificity and AUC of Trace measurement evaluation SI according to small urethral funnel was 84.60%,42.50%and 0.660,respectively,while according to large urethral funnel of 70.50%,86.30%and 0.884,respectively.Conclusion The depth of urethral funnel measured with transperineal pelvic floor ultrasonic Trace measurement could be used to quantitatively analyze urethral funnel and effectively evaluate female SI.Large urethral funnel had better efficacy than small urethral funnel for evaluating SI.