INTRODUCTION: TVT-Secur (TVT-S) was the first single-incision sling available on the market and was soon found to have less efficacy than mid-urethral slings. Our aim was to assess the position and tape descent following TVT-O and TVT-S H in a U procedure and, based on this evaluation, to find the possible reason for lower TVT-S surgery efficacy. METHODS: We conducted an ultrasound study of a randomised trial with a 3-year follow-up that took place between 2007 and 2009 and included 197 women with urodynamic stress urinary incontinence. Of these, 67 were allocated to receive the TVT-O procedure, 64 to TVT-S in the H position, and 65 in the U position. Patients underwent a complete urogynaecological and ultrasound examination. The positions of the bladder neck and the tape after surgery were assessed and the data obtained compared between groups. RESULTS: Our primary study showed a significantly higher rate of positive stress tests in the TVT-S groups compared to the TVT-O group. After surgery, there was no difference between the position of the tape at rest and at maximal Valsalva between the groups. In TVT-O patients, the mean length of the upper tape margin descent increased from 6 mm on the 1st day after surgery to 9 mm 3 months after surgery and remained stable afterwards. For TVT-S patients, there was a further increase of up to 15 mm in tape descent after 3 months. CONCLUSIONS: Our results show that the lower efficacy of TVT-S might be due to inadequate fixation and increasing tape descent.

Department of General Gynaecology and Urogynaecology Clinic for Gynaecology and Perinatology University Medical Centre Maribor Maribor Slovenia

Department of Obstetrics and Gynecology 1st Faculty of Medicine Charles University and General University Hospital Prague Nové Měst Czech Republic

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