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Ureteral stent

Michael W Sourial, Nathaly Francois, Geoffrey N Box, Bodo E Knudsen
INTRODUCTION AND OBJECTIVE: Supracostal access in percutaneous nephrolithotomy (PCNL) may be avoided due to concern for thoracic complications. The objective of the study is to report the safety and efficacy of supracostal access utilizing a tubeless (stent only) PCNL technique. PATIENTS AND METHODS: Retrospective review of perioperative outcomes of 70 patients (76 renal units) who underwent a supracostal tubeless PCNL. No nephrostomy tubes were left. All patients had a 7F ureteral stent and Foley catheter placed...
October 9, 2018: World Journal of Urology
Min Ho Lee, In Jae Lee, Tae Jin Kim, Sang Chul Lee, Chang Wook Jeong, Sung Kyu Hong, Seok-Soo Byun, Jong Jin Oh
OBJECTIVES: To evaluate the effect of preoperative ureteral stenting duration on the outcomes of retrograde intrarenal surgery (RIRS). PATIENTS AND METHODS: We reviewed our database of patients who underwent RIRS between May 2011 and April 2017 at our institution. The patients were divided into three groups according to preoperative ureteral stenting duration: group 1: no stenting, group 2: short preoperative stenting (< 7 days) and group 3: long preoperative stenting (≥ 7 days)...
October 8, 2018: World Journal of Urology
Hiroshi Matsuura, Shigeki Arase, Yasuhide Hori
BACKGROUND: This study investigated the clinical outcomes of stent placement for malignant extrinsic ureteral obstruction (MUO) and predictive factors for stent failure. METHODS: We retrospectively analyzed clinical data for 91 patients with radiologically significant hydronephrosis due to MUO who underwent successful stent placement. In total, 132 ureters were stented for the decompression. Factors related to stent failure were analyzed with a Cox proportional hazards model...
October 8, 2018: International Journal of Clinical Oncology
Elizabeth A Maxwell, Larie Allen
A 6 yr old Boston terrier presented with acute onset of vomiting and anuria 4 days following a caesarian section and ovariohysterectomy for treatment of dystocia. A total cystectomy with ligation of both ureters was diagnosed via exploratory laparotomy surgery. A jejunocystoplasty was performed in addition to a bilateral reimplantation of the ureters into the reconstructed bladder and proximal urethra. Postoperative complications included a retained ureteral stent, persistent pyelectasia, persistent hydroureters, recurrent urinary tract infections, and intermittent urinary incontinence...
October 1, 2018: Journal of the American Animal Hospital Association
Tiare Delaune, Fabrice Bernard, Luis Matres-Lorenzo, Antoine Bernardé
OBJECTIVE: To describe and report the outcome of a ureterouterine anastomosis after unilateral dehiscence of a ureterovaginal anastomosis after total cystectomy in a bitch. STUDY DESIGN: Case report. ANIMAL: A 10-year-old intact female border collie with a urinary bladder leiomyosarcoma. METHODS: The dog was diagnosed with an invasive urinary bladder tumor, treated by radical cystectomy and bilateral ureterovaginal anastomosis...
September 28, 2018: Veterinary Surgery: VS
Michael G Fadel, Chandran Louis, Andrea Tay, Marco Bolgeri
A 65-year-old female patient presented with a 2-day history of worsening right-sided abdominal pain and clinical signs of sepsis, on the background of a recent admission for pancolitis. Imaging revealed right ureteric herniation through the sciatic foramen with subsequent hydroureteronephrosis and radiological signs of severe pyelonephritis. The patient underwent emergency decompression with a percutaneous nephrostomy, followed by insertion of an antegrade stent to correct the ureteric hernia once the sepsis was appropriately treated...
September 27, 2018: BMJ Case Reports
Shotaro Yasuoka, Go Kimura, Yuka Toyama, Keichi Moriya, Keigo Takahashi, Ryo Matsuoka, Keita Shibayama, Kotaro Obayashi, Yasushi Inoue, Takao Shindo, Shigeki Iigaya, Yuki Endo, Jun Akatsuka, Tatsuro Hayashi, Satoko Nakayama, Tsutomu Hamasaki, Koiti Inokuchi, Yukihiro Kondo
A 73-year-old man presented with right lower back pain and dysuria. Right hydronephrosis and a large pelvic large mass were seen on computed tomography (CT). Although his prostate-specific antigen (PSA) was 0.5 ng/mL, an irregularly enlarged, stony, hard prostate was palpable on digital rectal examination. A prostate tumor was suspected, and a transrectal prostate biopsy and right transurethral ureteral stent placement were performed. Histological and immunohistochemical studies revealed diffuse large B-cell lymphoma...
2018: Journal of Nippon Medical School, Nippon Ika Daigaku Zasshi
W Kram, H Rebl, R Wyrwa, T Laube, A Zimpfer, M Maruschke, M Frank, B Vollmar, G Kundt, M Schnabelrauch, B Nebe, N Buchholz, O W Hakenberg
Ureteric stents have become an indispensable tool in the armamentarium of every urologist. However, they carry their own morbidity resulting mostly from infectious or abacterial fouling and biofilm formation, and/or urothelial hyperplastic reaction. All of these may interact and lead to clinical complications. Many different stent designs and coatings have been proposed. In this study, we focused on the effect of paclitaxel-coated stents on hyperplastic proliferation of ureteral tissue, using as example anastomotic strictures after ureteroureterostomy in a rat model...
September 26, 2018: Urolithiasis
Paul J Kokorowski, Jeanne S Chow, Bartley G Cilento, Don-Soo Kim, Michael P Kurtz, Tanya Logvinenko, Robert D MacDougall, Caleb P Nelson
BACKGROUND: Fluoroscopy is commonly used during pediatric ureteroscopy (PURS) for urolithiasis, and the most important contributor to overall radiation exposure is fluoroscopy time (FT). One factor that may impact FT is who controls activation of the fluoroscope: the urologist (with a foot pedal) or the radiation technologist (as directed by the urologist). While there are plausible reasons to believe that either approach may lead to reduced FT, there are no systematic investigations of this question...
June 27, 2018: Journal of Pediatric Urology
Jonathan Kam, Sam Khadra, Quoc Hoai Tran, Hannah Ainsworth, Mark Louie-Johnsun, Matthew Winter
OBJECTIVE: This study aims to evaluate the effectiveness of portable video media (PVM) compared to standard verbal communication (SVC) as a novel adjunct for surgical education of junior medical officers and medical students, in terms of knowledge acquisition and participant satisfaction. BACKGROUND: The effective, continued education of final year medical students and junior doctors is the foundation of quality healthcare. The development of new media technologies and rapid internet streaming has resulted in an opportunity for the integration of PVM into medical education...
September 22, 2018: Journal of Surgical Education
Seiji Asai, Tetsuya Fukumoto, Ryuta Watanabe, Kanae Koyama, Yuichiro Sawada, Terutaka Noda, Noriyoshi Miura, Yutaka Yanagihara, Yuki Miyauchi, Masao Miyagawa, Tadahiko Kikugawa, Takashi Saika
Objectives: To evaluate the value of a classification of hydronephrosis on 18F-flurodeoxyglucose (FDG)-PET/CT in predicting post-operative renal function and pathological outcomes among patients with upper urinary tract urothelial carcinoma. Methods: We retrospectively reviewed 71 patients treated with nephroureterectomy (NU) for upper urinary tract urothelial carcinoma after FDG-PET/CT between 2010 and 2016. Eight patients treated with ureteral stent or nephrostomy at the time of FDG-PET/CT were excluded...
September 25, 2018: Japanese Journal of Clinical Oncology
Giuseppe Ietto, Giovanni Saredi, Gabriele Soldini, Domenico Iovino, Francesco Amico, Elia Zani, Lorenzo Berti, Matteo Tozzi, Giulio Carcano
Urolithiasis is a rare complication after kidney transplant. Over the years, treatment of kidney stones has evolved radically, but a standard approach for transplanted kidneys has not yet been defined. Here, we present a 69-year-old male patient who received successful treatment of nephrolithiasis of the transplanted kidney. The patient, who had received a kidney from a deceased donor, was admitted to our department following a posttransplant Doppler ultrasonography showing severe hydronephrosis of the transplanted kidney associated with acute renal function decay...
September 25, 2018: Experimental and Clinical Transplantation
Hao Liu, Weiyun Pan, Nan Zhang
PURPOSE: Some urologists used the extraction strings for removal of ureteral stent without cystoscopy. While some urologists may have concern about perceived risks, including accidental dislodgement, infection, renal?colic?and lower urinary tract symptoms. Therefore, we performed a retrospective study to help address this conflict. MATERIALS AND METHODS: Patients who had an indwelling ureteral stent with(n=58) or without(n=82) extraction strings inserted after ureteroscopy for unilateral ureteral stones were enrolled...
September 22, 2018: Urology Journal
Subo Qian, Yunteng Huang, Ning Wang, Yu Ding, Jun Qi, Yongjiang Yu
PURPOSE: Our study aimed to investigate the clinical significance of urinary neutrophil gelatinase-associated lipocalin (NGAL) as an effective real-time monitoring biomarker of renal function in patients with obstructive ureteral calculi presenting renal colic. METHODS: A cohort of 89 first-visit patients with renal colic caused by unilateral ureteral calculi were retrospectively reviewed. 46 of which received double-J ureteral stent placement (group 1) and the remaining 43 treated conservatively with analgesics and hydration (group 2) when diagnosed...
September 24, 2018: World Journal of Urology
Balaji Appiya Ramamoorthy, Prakash Javangula Venkata Surya, Danny Darlington
INTRODUCTION: Prophylactic ureteric stents have been commonly employed to reduce the incidence of ureteric obstruction and anastomotic leaks following renal transplantation. There are very few studies on the duration of ureteric stenting in deceased donor renal transplantation (DDRT). We performed a prospective study to compare early and late double J stent removal in DDRT. AIMS AND METHODS: The aim of this study was to compare the early and delayed removal of ureteric stents after DDRT...
July 19, 2018: Curēus
David Watson Sobel, Theodore Cisu, Tessa Barclay, Andrew Pham, Peter Callas, Kevan M Sternberg
PURPOSE: Efforts have begun to implement non-opioid protocols for outpatient urologic surgery. In this study, we report a retrospective review of the feasibility of implementing a non-opioid protocol to manage postoperative pain after ureteroscopy with stent placement. METHODS: Between November 2016 and March 2018, 210 patients underwent ureteroscopy with stent placement by a single surgeon at an academic medical center. A treatment algorithm was used to determine eligibility and appropriately select patients for the non-opioid pathway...
September 22, 2018: Journal of Endourology
Sakib Moghul, Sidath Liyanage, Suresh Vijayananda, Matthew Tam, Ioannis Kapralos
Anatomic variants of the urinary tract are relatively common; however, a bifid ureter with a blind-ending branch is a rare congenital anomaly. This variant often goes unnoticed because patients are either asymptomatic or complain of vague abdominal symptoms. Diagnosis is often incidental, and may be missed on conventional imaging. Although bifid ureters usually do not require any specific investigations or treatment; it is important to have an appreciation for these anomalies particularly if radiological intervention or surgical procedures are planned...
December 2018: Radiology Case Reports
Burak Çıtamak, Emin Mammadov, Oğuzhan Kahraman, Taner Ceylan, Hasan Serkan Dogan, Serdar Tekgül
Purpose To investigate the factors which predict success and complication rates of semi-rigid ureterorenoscopy (URS) in pediatric population. Material-Methods This is a retrospective analysis of the database including 182 patients who underwent URS between 2001 and 2016. The possible factors which might affect the outcome were age, gender, stone laterality, largest stone size, number of stones, stone location, orifice dilatation status and caliber of ureterorenoscope. Results The mean age was 68.1 (7-204) months and male to female ratio was 94:88...
September 18, 2018: Journal of Endourology
Niall F Davis, John J Mulvihill, James J Lynch, Eva Browne, Damien M Bolton, Greg Jack, Michael T Walsh
Purpose To investigate the principles that govern ureteral stent failure by digitally and mechanically characterising their luminal reduction in response to various extrinsic compression forces. To explore the relationship between ureteral stent 'material area', 'luminal area' and 'cross-sectional area (CSA)' for resisting extrinsic compression forces. Materials and Methods 4.8 French (Fr, n=9), 6Fr (n=9), and 7Fr (n=9) ureteral stents were mechanically investigated to determine parameters that contribute to resisting radial compression forces...
September 15, 2018: Journal of Endourology
Ya-Fu Cheng, Yao-Jen Hsu, Tai-Wai Chi, Yu-Wei Fu
In children, urologic complications are rare after laparoscopic appendectomy (LA). In this article, we report the case of a 9-year-old boy with bilateral hydronephrosis caused by ureteral calculi 10 days after he had undergone LA. The patient's urinary output normalized and renal function recovered after stone extraction and bilateral ureteral stent insertion.
2018: Journal of Endourology Case Reports
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