Abstract
INTRODUCTION AND HYPOTHESIS: Traditional slings, tension-free vaginal tape obturator inside-out (TVT-O) and tension-free vaginal tape (TVT), have well-documented continence outcomes but can cause serious complications. This study was aimed at evaluating whether slings with less synthetic material, Ajust™ and TVT-O Abbrevo™ (TVT-A), have comparable 6- to 12-month failure and complication rates, including risk of prolonged postoperative pain, compared with traditional slings. METHODS: A registry study from the Norwegian Female Incontinence Registry (NFIR) including 611 Ajust™, 2,772 TVT-A, and 18,612 traditional slings was carried out. Preoperative, surgical, and 6- to 12-month follow-up data from the period 2009-2021 were used. Objective failure was defined as ≥ 1-g leakage on standardized cough-jump stress test. Subjective failure was defined as stress index-score ≥ 3 on a validated questionnaire. Prolonged postoperative pain was defined as lasting > 3 months. RESULTS: At first follow-up after 6-12 months, the groups differed significantly. Objective failure rates were as follows: Ajust™ 15.4%, TVT-A 13.5%, and traditional slings 7.3%, p < 0.01. Subjective failure rates were as follows: Ajust™ 23.4%, TVT-A 23.8%, and traditional slings 18.8%, p < 0.01. Shorter slings had fewer overall complications (Ajust™ 4.9% vs TVT-A 6.5% vs traditional slings 9.3%, p < 0.01), but did not have less prolonged postoperative pain (TVT-A: 1.4% vs Ajust™ 0.8% vs traditional slings 0.7%, p < 0.01 < 0.01). All presented outcomes remained significant after adjusting for differences at baseline. CONCLUSIONS: Shorter slings have inferior subjective and objective continence outcomes at 6-12 months, but fewer overall complications except for prolonged postoperative pain.