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Ureteral stent

Omar Khan, Prasad R Shankar, Adish D Parikh, Richard H Cohan, Nahid Keshavarzi, Shokoufeh Khalatbari, Richard J Saad, Matthew S Davenport
PURPOSE: To determine if symptomatic patients referred for radiographic stool quantification have equivalent stool burden to asymptomatic patients. METHOD: This was an IRB-approved HIPAA-compliant retrospective equivalence cohort study. An a priori equivalence power calculation was performed. Consecutive abdominal radiographs performed in adult outpatients with bloating, constipation, diarrhea, or abdominal pain to assess "fecal loading" [n = 242 (fecal cohort)] were compared to those performed in asymptomatic adult outpatients to assess "renal stones" [n = 242 (renal cohort)]...
December 14, 2018: Abdominal Radiology
Chi-Shin Tseng, Ting-En Tai, Chung-Hung Hong, Chung-Hsin Chen, I-Ni Chiang, Yu-Chuan Lu, Shih-Chun Hung, Kuo-How Huang, Chao-Yuan Huang, Hong-Chiang Chang, Yeong-Shiau Pu, Po-Ming Chow
PURPOSE: To analyze the trifecta outcome (functional, anatomical, and surgical aspects) of surgical reconstruction for ureteral lesions and investigate the factors affecting the success rate of such reconstruction. METHODS: We retrospectively reviewed the data of patients who underwent ureteral reconstruction at our institute between March 2007 and November 2016. Patient profiles, surgical methods, complications, ureteral stenting, laboratory data, and image studies were collected...
December 11, 2018: World Journal of Urology
Hakkı Uzun, Nezih Akça
Objectives: To compare the 7.5-9.5F ureteroscope (URS) with the 4.5-6.5F URS (Ultra-Thin) in terms of success and complication rates in adult patients with ureteric and renal pelvic stones. Patients and methods: In all, 41 patients treated with 7.5-9.5F semi-rigid URS (Group 1) and 33 patients treated with the Ultra-Thin (Group 2) were prospectively included in the study. All patients underwent holmium laser ureteroscopic lithotripsy. In each group, when the selected ureteroscopic intervention failed to reach or disintegrate the stone, the URS was replaced with the other one...
December 2018: Arab Journal of Urology
Hiro Okawa, Hideo Gobara, Yusuke Matsui, Toshihiro Iguchi, Takao Hiraki, Susumu Kanazawa
Percutaneous cryoablation for renal tumors may be associated with rare complications such as injury to the ureter. A 65-year-old woman underwent percutaneous cryoablation after a transcatheter arterial embolization using lipiodol and ethanol for left renal oncocytoma. Two months after the percutaneous cryoablation, computed tomography images showed left hydronephrosis caused by high-density debris, which was assumed to be sloughed tumor with lipiodol accumulation in the left ureter. A stent was placed in the left ureter to enhance the drainage of urine and the necrotic cell debris...
December 2018: Radiology Case Reports
Clemens G Wiesinger, Jason Lee, Jaime O Herrera-Caceres
PURPOSE OF REVIEW: We present a review of recent literature to summarize the most recent evidence on the use of ureteral stents, including the use of different materials and treatment of stent-related symptoms. RECENT FINDINGS: Metal stents are able to resist lumen occlusion from extrinsic compression allowing longer indwelling time and making them an option for long-term use. Biodegradable stents have the advantage not to require secondary procedures; however, they have not proven their safety in the clinical setting yet...
December 6, 2018: Current Opinion in Urology
Valerie L Luks, Jonathan Merola, Brian N Arnold, Christopher Ibarra, Kevin Y Pei
BACKGROUND: Prophylactic placement of ureteral stents is performed during open colectomy to aid in ureteral identification and to enhance detection of injury. The effects of this practice in laparoscopic colectomy are unknown. This study compares outcomes of patients undergoing laparoscopic colectomy with and without prophylactic ureteral stenting. METHODS: A retrospective cohort study at a tertiary academic medical center was performed. The primary outcome measure was the incidence of ureteral injury...
February 2019: Journal of Surgical Research
Alkan Cubuk, Fatih Yanaral, Faruk Ozgor, Metin Savun, Harun Ozdemir, Akif Erbin, Bahar Yuksel, Omer Sarilar
The effects of ureteral stent diameters on ureteral stent-related symptoms were evaluated by using Turkish-validated Ureteral Stent Related Symptoms Questionnaire (USSQ). Datas on 126 patients underwent uncomplicated flexible ureterorenoscopy and 62 patients underwent uncomplicated semirigid ureteroscopy surgery without stent insertion (group 3) were collected. Patients were randomized preoperatively in a double-blind fashion to 4.8 French (group 1) and 6 French (group 2) ureteral JJ stents groups. The first follow-up visit was done at one week after surgery for all groups...
December 2018: Kaohsiung Journal of Medical Sciences
Makoto Taguchi, Kenji Yoshida, Motohiko Sugi, Hidefumi Kinoshita, Tadashi Matsuda
PURPOSE: To investigate a method to determine the appropriate length of ureteral stents, given that the stent length may lead to exacerbation of urinary symptoms if the stent crosses the bladder midline. MATERIALS AND METHODS: We retrospectively reviewed the position of the distal curl of the ureteral stent using kidney/ureter/bladder (KUB) radiographs after ureteroscopic lithotripsy in 165 patients who underwent placement of 24- or 26-cm ureteral stents. According to the KUB findings, we categorized the position of the distal curl of the ureteral stent into two groups...
November 2018: International Braz J Urol: Official Journal of the Brazilian Society of Urology
Tzevat Tefik, Salvatore Buttice, Bhaskar Somani, Selçuk Erdem, Tayfun Oktar, Faruk Özcan, Taner Koçak, İsmet Nane, Olivier Traxer
BACKGROUND: Ureteral access sheaths (UASs) are commonly used in retrograde intra-renal surgery (RIRS). Despite their advantages, there is a risk of ureteral trauma during their placement and subsequent stricture following surgery. The aim of this study was to evaluate the UAS force of insertion (FOI) during placement and its impact on ureteral trauma. METHODS: Seven female patients who underwent RIRS for kidney stones were included in the study. A digital force gauge (Chatillon DFX II; Ametek Test and Calibration Instruments, Largo, Florida, USA) was connected to the distal end of the UAS and the UAS FOI was continuously measured during insertion...
November 2018: Ulusal Travma Ve Acil Cerrahi Dergisi, Turkish Journal of Trauma & Emergency Surgery: TJTES
Ravindar Anbarasan, Stephen Griffin, Bhaskar K Somani
PURPOSE: The aim of this study was to retrospectively analyze outcomes of flexible ureteroscopy and laser fragmentation (FURSL) of renal stones with the use of ureteral access sheath (UAS) in the paediatric population. MATERIALS AND METHODS: We retrospectively collected data between January 2011 and January 2018 for patient demographics, stone characteristics and outcomes in 21 children who underwent FURSL with the use of UAS. RESULTS: Twenty-one patients (10 boys and 11 girls) with a mean age of 11...
December 4, 2018: Journal of Endourology
F Löcherbach, P Grimsehl, A Sauer, S Wyler, M Kwiatkowski
We would like to present the case of a 64-year-old woman who underwent ureterorenoscopy and suffered an iatrogenic ureteral lesion due to an accidental intubation of the left ureter with a Foley-Catheter during the procedure. A Double-J-Stent was implanted into the damaged ureter, and 6 weeks later it fully recovered. To our knowledge there are few similar cases described in the literature with none of those having happened during ureterorenoscopy so far.
2018: Case Reports in Urology
Lucy Kopecny, Carrie A Palm, Kenneth J Drobatz, Ingrid M Balsa, William T N Culp
BACKGROUND: Ureteral stent and subcutaneous ureteral bypass (SUB) placement are commonly used for managing ureteral obstructions. Urinary tract infection (UTI) is a recognized complication. OBJECTIVES: To determine postoperative incidence of positive urine cultures in cats undergoing ureteral stent and SUB placement and to identify risk factors associated with positive urine cultures. DESIGN: Retrospective study. ANIMALS: Forty-three cats that underwent 48 surgical events...
December 3, 2018: Journal of Veterinary Internal Medicine
Carola M Wieker, Philipp von Stein, Claudio Bianchini Massoni, Fabian Rengier, Dittmar Böckler, Philipp Geisbüsch
OBJECTIVE: The objective of this study was to investigate the long-term outcome after open repair of inflammatory infrarenal aortic aneurysms. METHODS: A total of 62 patients (mean age, 68.9 ± 8.8 years; 91.9% male) undergoing open surgery for inflammatory aortic aneurysm from 1995 until 2014 in a high-volume vascular center were retrospectively evaluated. The patients' demographics, preoperative and postoperative clinical characteristics, imaging measurements, and procedural data were collected...
June 28, 2018: Journal of Vascular Surgery
Patrick Betschart, Valentin Zumstein, Matthias T Buhmann, Werner C Albrich, Oliver Nolte, Sabine Güsewell, Hans-Peter Schmid, Qun Ren, Dominik Abt
PURPOSE: To evaluate the influence of biofilms on morbidity associated with short-term ureteral stenting using contemporary methods of biofilm examination and validated assessment of symptoms. METHODS: Patients undergoing temporary ureteral stenting for secondary ureterorenoscopy due to urinary calculi were prospectively included. The German Ureteral Stent Symptoms Questionnaire (USSQ) was used to assess stent-associated morbidity. Biofilms were removed from stents using 'pinhole extraction', a novel, validated, abrasion-based technique...
November 27, 2018: World Journal of Urology
Steffen Lebentrau, Philippe-Fabian Müller, Arkadiusz Miernik, Martin Schönthaler, Christian Gilfrich, Julia Peter, Martin Schostak, Matthias May
BACKGROUND: The Post-Ureteroscopic Lesion Scale (PULS) is a validated, standardised scale that classifies iatrogenic ureteral lesions during ureteroscopy (URS). OBJECTIVE: To determine risk factors for the various PULS-grades caused by URS. METHOD: We prospectively investigated the independent influence of various risk factors in correlation with PULS-Grade 1+ and 2+ on 307 patients with ureterorenoscopic stone treatment from 14 German urologic departments...
November 27, 2018: Urologia Internationalis
N C Wong, L H Braga
BACKGROUND: Ectopic upper-pole (UP) ureters in duplex kidneys can be managed surgically by ipsilateral distal ureteroureterostomy (U-U) with or without ureteric stenting. Evidence to support routine stenting during this procedure is lacking. OBJECTIVE: The authors present their outcomes of children with ectopic UP ureters who underwent ipsilateral distal U-U. They also compared outcomes of those who underwent routine ureteric stenting to those who did not. STUDY DESIGN: Between 2009 and 2015, the authors performed a prospective analysis on consecutive patients with duplex collecting systems who underwent distal U-U via an inguinal incision for ectopic UP ureters by one of two pediatric urologists...
October 24, 2018: Journal of Pediatric Urology
Sorena Keihani, Ross E Anderson, James M Hotaling, Jeremy B Myers
Renal trauma research has historically focused on parenchymal injuries and the risk of bleeding. However, much less is known about the diagnosis and optimal management of urinary extravasation, which complicates ~30% of high-grade renal injuries. Immediate or delayed ureteral stenting is the most common procedure used to treat collecting system injuries when intervention is needed. However, the lack of evidence-based guidelines leaves the diagnosis and management of urinary extravasation largely dependent upon physicians' experience, initial and follow-up imaging protocols, and the definitions used for grading the injuries...
November 23, 2018: Nature Reviews. Urology
Hong Peng, Ding Guang-Pu, Hao Han, Yang Kun-Lin, Zhuang Li-Yan, Cai Lin, Zhang Zhong-Yuan, Fan Shu-Bo, Zhang Lei, Tang Qi, L I Xue-Song, Zhou Li-Qun
OBJECTIVES: To illustrate our technique to construct the Institute of Urology Peking University (IUPU) orthotopic ileal bladder and present our initial experience. METHODS: From August 2017 to April 2018, twelve patients with bladder cancer underwent radical cystectomy (RC), pelvic lymph node dissection (LND) and extracorporeal construction of an IUPU neobladder (IUPUB) by an experienced surgeon. We present the demographic, clinicopathologic, perioperative and follow-up data...
November 20, 2018: Urology
Tamas Szell, Franz Dressler, Hanna Goelz, Benjamin Bluemel, Arkadiusz Miernik, Thomas Brandstetter, Frank Scherag, Dominik Stefan Schoeb
OBJECTIVES: Ureteral stenting is a widely used method for non-invasive urinary drainage in ureteral obstruction. However, biofilm development due to transient bacteriuria can cause severe complications such as incrustation with subsequent obstruction as well as recurrent urinary tract infection. Apart from local ailment such as dysuria, this increases both stent replacement frequency and incidence of complications. In this work, we investigated in vitro the bacterial adhesion to a surface-attached and crosslinked poly(N,N-dimethylacrylamide) (PDMAA) hydrogel network, which is known for its non-fouling and protein repellent characteristics...
November 20, 2018: Journal of Endourology
Ali H Aldoukhi, Kristian Black, James Shields, Khurshid R Ghani
OBJECTIVE: To demonstrate the use of the Moses technology for holmium laser lithotripsy in conjunction with mini-PCNL to treat a lower pole stone. The Moses technology is a pulse modulation method that can reduce stone retropulsion, which may have advantages when used during mini-PCNL. METHODS: A 63-year-old patient with a right-sided 1.5 cm lower pole stone (1300 Hounsfield Unit) underwent mini-PCNL using a 120W holmium laser (MosesP120, Lumenis). Moses has two modes - "Contact" and "Distance" - optimized for operation at 0-1 and 2-3 mm from the stone surface, respectively...
November 15, 2018: Urology
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