Ultrasonography and Clinical Outcomes Following Single-Incision Mid-Urethral Tape Procedure (I-Stop-Mini) for Urodynamic Stress Incontinence at 1 Year.

OBJECTIVE

To evaluate I-Stop-Mini surgery outcomes in urodynamic stress incontinence (USI) patients and its sonographic features at 1 year.

METHODS

One hundred one patients with confirmed USI who underwent I-Stop-Mini surgery from March 2019 to February 2023 were recruited. Inclusion criteria include confirmed USI. Pelvic organ prolapse ≥ stage 2, detrusor overactivity, neurogenic bladder, high residual urine, or concomitant prolapse surgery were excluded. Primary outcomes were objective and subjective continence cure. Secondary outcomes were sonography findings of sling mobility (T), bladder neck (BN), sling to urethra percentile, and the presence of dynamic urethral kinking.

RESULTS

Objective cure and subjective cure were 85/92 (92.4%) and 83/92 (90.2%). Significant improvement in UDS diagnosis of USI was seen pre- versus postoperatively 92/92 (100%) versus 7/92 (7.85%) p < 0.001 and change in pad weight from 22.4 ± 29.1 to 1.5 ± 3.8 g, p < 0.001. As for secondary outcome, no change in resting tape position (xt, yt), at 6months and 1 year; (18.2 ± 2.8, 17.3 ± 2.6 mm) versus (18.8 ± 2.2, 17.8 ± 2.8 mm), (p = 0.208, p = 0.237) respectively. During Valsalva (22.4 ± 3.3, 7.0 ± 2.9 mm) versus (22.8 ± 3.7, 7.5 ± 2.4 mm) (p = 0.251, p = 0.135) at 6 months and 1 year. Tape mobility unchanged, 11.3 ± 2.5 versus 11.4 ± 3.0 mm, p = 0.693. Dynamic kinking was maintained at 60% versus 59%, p = 0.877. No major complication was observed.

CONCLUSION

I-Stop-Mini SIS has high objective and subjective cure. Dynamic kinking, BN position (at rest and Valsalva) and mobility between 6 months and 1 year were maintained, thus promoting its continence effect.