Oguz Ozden Cebeci

and 1 more

Introduction This study aimed to evaluate the etiological factors and their effects on long-term clinical outcomes in patients with iatrogenic ureteral injury (IUI). Material and Method Twenty-seven patients who underwent surgery because of IUI were evaluated between January 2011 and April 2018. Patients were classified according to the time of diagnosis and the need for reoperation after the urologic intervention. The IUI cases detected during gynecological surgery were called ‘perioperative’ IUI, and those diagnosed late as ‘postoperative’ (delayed) IUI. The IUI type was categorized as ‘cold transection’ due to surgical dissection or ligation and ‘thermal injury’ if it depended on any energy-based surgical device. Results Postoperative diagnosed cases consisted of exclusively after laparoscopic surgery (p=.025). Patients with thermal injury to the ureter were mostly diagnosed postoperatively (p= .021). Patients who underwent endourological intervention, 31.25% (N = 5/16) were diagnosed during gynecologic surgery, and 68.75% (n = 11/16) were diagnosed postoperatively. For open reconstructive surgery, these rates were observed to be 72.72% (n = 8/11) and 27.28% (n = 3/11), respectively (p=.034). IUI was due to thermal injury in all patients who developed complications after the urological intervention (p = .046), and the first urological intervention was endoscopic double loop stenting (p = .005). One of these patients was diagnosed in the perioperative period and seven in the postoperatively (p = .016). Conclusion Treatment success rates are low in patients who underwent endourological intervention after thermal IUI. Therefore, surgical techniques in which the traumatic ureter segment is excised should be preferred to avoid complications. Key Words Ureter, Iatrogenic, Thermal Injury, Iatrogenic Ureteral Injury, Endourological Intervention.

Oguz Ozden Cebeci

and 4 more

Introduction Residual stone fragments remain a challenging topic for urologists following retrograde intrarenal surgery (RIRS). This study investigates the effectiveness of second-look flexible ureterorenoscopy (URS) to achieve a true stone-free status and decrease stone-related events. Material and Method A total of 176 consecutive patients treated with RIRS for kidney stones were included in the study. Patients were divided into two groups, group 1 receiving the standard of care (n=51) and group 2 receiving second-look flexible URS (n=125). In all cases, one or more calyceal stones of 1 to 4 mm were extracted with a basket at the time of stent removal. Unless earlier intervention was necessary, patients were followed up every six months to determine if they had experienced SREs. Results The mean follow-up time for the whole group was 21±11.1 months. The mean number of stones in group 1 and group 2 was 1.25±0.11 and 1.56±0.19, respectively. Postoperative stone-free rate after RIRS for group 1 and group 2 were 37.25% (n=19/51) and 40.8% (n=51/125), respectively. The SFR improved to 93.6% (n=117/125) in group 2. Multivariable analysis showed that type of intervention, stone size, and body mass index were independent prognostic factors for SREs. When group 2 was taken as a reference, the odds ratio for SREs was 8.48 (95% CI: 2.95–24.42) in group 1. Conclusion This study found that second-look flexible URS increased the SFRs and diminished the number of SREs. We propose performing second-look flexible URS following RIRS in the presence or suspicion of RSFs to provide better treatment results, less radiation exposure, and greater patient satisfaction. Key Words Retrograde Intrarenal Surgery, Flexible Ureteroscopy, Stone-free Rate, Residual stone Fragments, Stone-Related Event, Second-look Flexible Ureteroscopy.