973 Intraoperative evaluation of ureteral injuries during retrograde intrarenal surgery using ureteral lesion scale

Background: Anterior Lumbosacral Interbody Fusion (ALIF) is a type of back surgery with the advantages of direct access to the spinal interbody space and the potential lessening morbidity related to posterior approaches. Purpose: To describe a rare case of left ureteral lesion from ALIF surgery diagnosed 4 months after the procedure. Case description: A 37-year-old Caucasian man with a long history of painful post-traumatic spondylolisthesis and degenerative L5-S1 disc disease underwent a retroperitoneal anterior L5-S1 discectomy, insertion of an interbody tantallium cage, and placement of a pyramid titanium plate fixed with screws. Four months later, due to recurrent left lumbar pain and mild renal failure, a CT scan was performed showing left hydronephrosis with a homolateral urinoma of 17 cm in diameter. A left nephrostomy was placed and the nephrostography detected a filiform leakage at L5-S1 level in communication with the urinoma. The patient underwent laparoscopic urinoma drainage, distal left ureterectomy, and Casati-Boari flap ureterocystoneostomy with ureteral double J stent placement. The stent was held for six weeks and, 1 month later, the control ultrasound scan was negative for hydronephrosis, the creatinine level had normalized and the patient was asymptomatic. Conclusion: Ureteral lesion from ALIF surgery is a very rare event. Spinal surgeons should be more awareness regarding the susceptibility of ureteral injuries along with the clinical presentation, diagnostic work-up, and management options for this kind of complication.

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Semirigid ureteroscopy prior retrograde intrarenal surgery (RIRS) helps to select the right ureteral access sheath

Archivio Italiano di Urologia e Andrologia ◽

10.4081/aiua.2018.1.20 ◽

2018 ◽

Vol 90 (1) ◽

pp. 20 ◽

Cited By ~ 1

Author(s):

Ioannis Boulalas ◽

Mauro De Dominicis ◽

Lorenzo Defidio

Keyword(s):

Retrograde Intrarenal Surgery ◽

Ureteral Access Sheath ◽

Access Sheath ◽

Ureteral Lithiasis ◽

Ureteral Injuries ◽

The Right ◽

A Prospective Study ◽

Correlated Factors ◽

Disease Location ◽

Selection Of

Objective: To evaluate ureteral compliance through semirigid ureteroscopy (sURS) in order to select the proper ureteral access sheath (UAS) size for retrograde intrarenal surgery (RIRS). Patients and methods: In a prospective study, 100 consecutive patients selected for elective sURS or RIRS were recruited. Each patient, initially underwent 9.5 Fr sURS with a safety guidewire 3Fr, in order to estimate ureteral compliance. If the ureter was compliant, a gently passage of a 12/14Fr UAS was attempted. If the ureter was not deemed compliant, passage of either a smaller UAS or a smaller semirigid 7Fr or a flexible 7.5Fr or a digital 8.5Fr scope with and without safety guidewire, was attempted. Age, gender, disease location, prestenting, previous RIRS and/or stone elimination, hydronephrosis, ureteral strictures, unsuccessful procedures, and complications, were analyzed as possible correlated factors of ureteral compliance. Results: In 77 patients the ureter was deemed compliant ≥ 14Fr. Of the preoperative factors that were examined, stent placement before RIRS (P < 0.002), previous RIRS (P = 0.000) and previous stone elimination (P = 0.004), correlated with ureter ≥ 14Fr. Ureteral lithiasis (P < 0.001), ureteral strictures (P < 0.05), unsuccessful procedures (P < 0.005) and complications (P = 0.01) correlated with ureter < 14Fr. The complication rate was 10% (10 patients) with ureteral injuries grade I in 9 patients and grade III in 1 patient according to the endoscopic grading system. Age, gender, hydronephrosis and urothelial carcinoma (UC) had no influence. Conclusions: sURS performed before RIRS allows selection of the right ureteral access sheath (UAS) and avoidance of major complications. Pre-stenting, previous RIRS and stone elimination history are all factors correlating with a compliant ureter.

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WHAT IS THE EFFECT OF SMALL SIZE URETERAL ACCESS SHEAT ON URETERAL STRICTURE DURING RETROGRADE INTRARENAL SURGERY?: A ONE-YEAR FOLLOW-UP.

10.22541/au.161494245.53004135/v1 ◽

2021 ◽

Author(s):

özer güzel ◽

Melih Balci ◽

Altug Tuncel ◽

Ahmet Asfuroglu ◽

Can Aykanat ◽

...

Keyword(s):

Major Complication ◽

Ureteral Injury ◽

Late Complications ◽

Flexible Ureteroscopy ◽

First Year ◽

Ureteral Stricture ◽

Retrograde Intrarenal Surgery ◽

Ureteral Access Sheath ◽

Access Sheath ◽

Ureteral Injuries

Aim: To analyze the ureteral injury and incidence of ureteral stricture in a series of patients who underwent retrograde intrarenal surgery with using smallest ureteral access sheath. Materials and Methods: Between September 2016 and March 2019, 154 consecutive retrograde intrarenal surgery procedures with adjunctive use of an ureteral access sheath for kidney stone were prospectively included the study. A 9.5/11.5-F ureteral access sheath was used during procedures. The patients were evaluated in terms of intraoperative postoperative and late complications. Ureteral injuries after retrograde intrarenal surgery were assessed visually with flexible and semirigid ureterorenoscope. All patients were evaluated by computed tomographic urography in the first year after treatment for detection of ureteral stricture. Results: The mean age of the patients was 47±15 (12-81) years. Of the patients, 86 were male and 68 were female. Mean stone size was 17.1±8 (7-40) mm and mean operative time was 56±23 (30-120) minutes. Overall 79.9% of patients had evidence of injury to the ureter wall. Non-significant lesion (grade 0) was seen in 39.0% of patients. Grade 1 lesions were assigned in 40.9% of patients. There were no grade 2 and higher lesions detected. A total of 5 patients (3.2%) had minor complications. Urinary sepsis developed as a major complication in 3 patients (1.9%). No ureteral stricture was detected in the patients at first year control. Conclusions: The results of our series indicate that the 9.5/11.5-F ureteral access sheath is safe for routine use to facilitate flexible ureteroscopy and there was no long-term adverse effect.

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