Ureteroscopy Articles

While ureteroscopy (URS) is a common procedure for ureteric stones, this window between diagnosis and treatment leaves the possibility for a 'negative', 'stoneless' or 'diagnostic' URS. We perform a systematic review to look at the rate of 'negative ureteroscopy' and risk factors associated with it.

The purpose was to propose an update of the french guidelines from the national committee CCAFU on upper tract urothelial carcinomas (UTUC).

A systematic Medline search was performed between 2013 and 2016, as regards diagnosis, options of treatment and follow-up of UTUC, to evaluate different references with levels of evidence.

The monopoly of robotic surgical devices of the last 15 years will end in 2019 when key patents of Intuitive Surgical expire. Thus, we can expect an interesting competitive situation in the coming years.

Urological and surgical treatment of urinary stones are highly technological and technology-driven disciplines in present-day surgery. German medical engineering has always been recognized for its technical innovations in endoscopic surgery.

ORLANDO, FL USA (UroToday.com) - Motor memory, established by proper tissue-tool interaction, is an important component of learning a psychomotor task.

Intraoperative assessment of stone size is crucial for the successful and safe extraction of stones. The first automatically fixating measuring stone basket prototype showed a mismatch between the steel spring and the nitinol basket; therefore, to improve this prototype, the steel spring was replaced with a nitinol spring and a modified scale was implemented on the basket handle for accurate intraoperative stone size measurement.

Background: Percutaneous nephrolithotomy (PCNL) serves as the gold standard minimally invasive procedure to remove large renal stones. The puncture is made from the skin to the chosen calix under fluoroscopic guidance, although this remains a challenging technique.

Previous studies have shown that prestenting in ureterorenoscopic stone removal (URS) is carried out more frequently in Germany than in other countries.

This investigation evaluated the impact of high prestenting rates on outcomes as well as the influence of stone characteristics and treatment habits on prestenting.

Background: The ureteral access sheath (UAS) has revolutionized the management of urinary pathology in the upper tract by providing rapid repeatable access to the upper urinary tract. However, in many practices, it remains a controversial tool in endourology given concerns of possible ureteral injury and presumed long-term sequela from those injuries.

The importance of assessing perioperative urine/stone cultures and providing appropriate antibiotic prophylaxis prior to shock wave lithotripsy (SWL) or endoscopic intervention cannot be minimized. Urinary tract infection (UTI) is the most common complication relating to stone intervention.

SAN DIEGO, CA USA (UroToday.com) - The management of kidney stones during pregnancy can be challenging. The goal of this study from the Mayo Clinic was to compare the potential anesthetic risk to the fetus when temporizing stents are placed, compared to definitive management with ureteroscopy.

SAN DIEGO, CA USA (UroToday.com) - It has been well documented in the literature that spinal cord injury (SCI) increases the risk of kidney stones.

Retrograde ureteroscopy (URS) can be safely and successfully performed in patients who have had previous urinary diversion (UD). With broadening indications and advances in technology, URS can be used in complex cases.

Residual fragments are common after stone treatment. Little is known about clinical outcomes relevant to the patient. This comprehensive review of the literature highlights the impact of residual fragments, modes of detection, and treatment strategies to avoid residual fragments in shock wave therapy, ureteroscopy, and percutaneous nephrolithotomy.

Complex ureteric strictures present a significant challenge to the endourologist and uro-radiologist. Multiple separate interventions to try to cross the stricture are often attempted. We describe our experience managing a heterogenous patient group using the 'rendezvous' procedure.

Large cohort studies on whether any association existed between urological interventions for urolithiasis and the development of CKD are lacking. From claims data of the National Health Insurance (NHI) program of Taiwan, we identified 54,433 patients newly diagnosed with urolithiasis during 1998-2010.

Radical nephroureterectomy with en bloc bladder cuff excision and regional lymphadenectomy is the gold standard for the management of high-grade and high-risk upper tract urothelial carcinomas (UTUC).

To evaluate the feasibility of measuring the intrapelvic pressure (IPP) during f-URS with a wire including a pressure sensor and to assess IPP profiles during the procedure.

Patients undergoing f-URS for stone disease were recruited.

With the increasing of the prevalence of pediatric urolithiasis (1-5%), retrograde intrarenal surgery (RIRS) is emerging as preferred option for the management of stones in pediatric patients. Although the principles of RIRS developed in adults can be applied in children, also expert adult endourologists feel uncomfortable to approach young patients due to long learning curve that usually is expected to be required in this particular setting.

We sought to validate the use of crowdsourced surgical video assessment in the evaluation of urology residents performing flexible ureteroscopic laser lithotripsy.

We collected video feeds from 30 intrarenal ureteroscopic laser lithotripsy cases where residents, postgraduate year (PGY) two through six, handled the ureteroscope.

INTRODUCTION - The use of flexible ureterorenoscopy for treating kidney stones has increased in recent years, with considerable worldwide variation in the surgical technique and indications.

OBJECTIVE - To determine the current practice, technique variations, use and indications of flexible ureterorenoscopy for treating kidney stones in Latin American.

To elucidate the current scenario of endourology in Brazil for the treatment of urinary lithiasis, with an emphasis on regional differences and the reasons why certain techniques are still underutilized.

The present study aims to biochemically analyze the fluid samples containing stone dust taken during the perioperative period to determine the role of fluid in the prediction of stones in patients treated with ureterorenoscopic procedures.

To determine the effect of diagnostic ureteroscopy on intravesical recurrence in patients with upper tract urothelial carcinoma (UTUC) after radical nephroureterec¬tomy (RNU).

We conducted a retrospective analysis of 664 patients who were treated with RNU for UTUC from June 2000 to December 2011, excluding those who had concomitant/prior bladder tumors.

We sought to evaluate the discordance between ureteroscopic biopsy and surgical pathology for grading and staging of upper tract urothelial carcinoma (UTUC) and to establish preoperative predictors of aggressive tumors.

There is scant evidence in the literature to support dusting stones vs active basket extraction during ureteroscopy for kidney stones. We sought to prospectively evaluate and follow patients to determine which modality produced a higher stone free rate with the least complications.

Management of urinary stones is a major issue for most urologists. Treatment modalities are minimally invasive and include extracorporeal shockwave lithotripsy (SWL), ureteroscopy (URS), and percutaneous nephrolithotomy (PNL).

To evaluate a reduction in total radiation dose to the operator during ureteroscopy (URS) for stone disease by using protective lead curtains.

Two studies were planned to compare scattered radiation doses without (n-LC group) and with protective lead curtains (LC group).

In recent years, the incidence of urinary stone disease reportedly has been increasing. The use of shockwave lithotripsy has seen low success rates, the inefficacy of a single session, and the need for general anaesthesia in children; additionally, children are exposed to radiation.

A select group of patients with upper tract urothelial carcinoma (UTUC) may meet indications for endoscopic management. Strategies for disease management are provided, based on a comprehensive review of the data using PubMed and Medline databases and marrying this with our experience with endoscopic management of UTUC.

The aim of this study was to investigate clinical and ureteroscopic factors considered as important for the prediction of invasive upper tract urothelial carcinoma (UTUC) and establish a model using a new ureteroscopic scoring.

Endoscopic management of upper tract urothelial carcinoma has become more popular over the last few decades as there has been an impetus for renal preservation in these patients. While radical nephroureterectomy has been the gold standard in treatment of this disease, ureteroscopic and percutaneous management has become a viable option for select patients.

Radical nephroureterectomy with an ipsilateral bladder cuff is the referent standard for management of muscle-invasive, high-grade, or bulky upper-tract urothelial carcinoma (UTUC). Nonetheless, certain patients with UTUC have imperative or elective indications for kidney preservation thereby lending to more conservative strategies for management of this disease.

Nephrolithiasis patients undergo repeated imaging increasing their radiation risk. Guidelines recommend imaging following ureteroscopic lithotripsy (URSL), but not the modality or frequency of imaging.

The European Association of Urology (EAU) Guidelines Panel on Upper Urinary Tract Urothelial Carcinoma (UTUC) has prepared updated guidelines to aid clinicians in the current evidence-based management of UTUC and to incorporate recommendations into clinical practice.

As the incidence of pediatric nephrolithiasis rises, understanding the efficacy and morbidity of surgical treatment options is critical. Currently, there are limited comparative data assessing shock wave lithotripsy (SWL) and ureteroscopy (URS) outcomes in children.

Development of surgical expertise and technology has affected the way renal tract stones are treated. Our hypothesis was that flexible ureteroscopy (FURS) for upper tract stones in children produces good results.

Objective The aim of this study was to analyse the results regarding survival, recurrence and kidney preservation after endoscopic treatment for upper urinary tract urothelial carcinoma (UTUC) in a Norwegian hospital during the period from 2001 to 2012, and compare them with results reported in the literature.

There are limited number of studies comparing the results of Holmium:YAG laser lithotripsy (LL) and pneumatic lithotripsy (PL) for pediatric ureteral stones.

To perform a comparative analysis of LL and PL in the management of ureteral stones in children and adults.

Modern day holmium laser systems for ureteroscopy (URS) provide users with a range of settings, namely pulse energy (PE), pulse frequency (Fr), and pulse width (PW). These variables allow the surgeon to choose different combinations that have specific effects on stone fragmentation during URS lithotripsy.

Maintenance of flexible ureteroscopes can involve high costs and administrative burden. Instrument fragility necessitates eventual repair, rendering scopes inaccessible during refurbishment. We conducted a multi-institutional prospective cohort study to identify perioperative factors influencing flexible ureteroscope durability.

To evaluate the impact of diagnostic ureteroscopy performed before radical nephroureterectomy (RNU) on intravesical recurrence (IVR) in patients with upper tract urothelial carcinoma (UTUC).

From May 2003 to December 2018, patients who underwent RNU for UTUC were enrolled and divided into two groups according to whether they underwent preoperative ureteroscopy (Pre-U vs.

Holmium:YAG laser is the most used laser for urolithiasis. Generally, we use metallic scissors to cut the fiber tip to restore its effectiveness. Many cleaving methods have been described to avoid fiber damage and to restore its greatest power to the fiber.

To compare the oncologic outcomes of patients with upper tract urothelial carcinoma (UTUC) undergoing nephroureterectomy (NU) with and without prior ureteroscopy (URS).

We reviewed records of all patients with no prior history of bladder cancer that underwent NU at our institution (n = 201).

To characterize the rate of febrile urinary tract infections (UTI) after ureteroscopy in patients with neurogenic bladder compared to those with physiologically normal bladders. While generally considered safe and effective, there is a growing body of evidence suggesting that patients with neurogenic bladder are at increased risk of infectious complications following ureteroscopy.

Fluoroscopy is valuable in modern endourology. We present the results of a survey where compliance to radiation safety measures was tested according to surgical exposure, and level of understanding of the radiation rules and risks associated with it.

Current trends show a rising incidence of kidney stone disease (KSD) globally, with a lifetime risk of 10% and increasing hospital admissions. However, it is not perceived as a life-threatening condition and there are no publications examining its mortality rate.

MDCTU is a preferred method for the investigation of malignant lesions in the upper urinary tract. However, to decrease unnecessary radiation exposure the indications for the exam in different groups of patients should be assessed.

INTRODUCTION - Fragments smaller than 4 mm after ureteroscopy were historically considered clinically insignificant, but there is a reported 20% event rate upon follow-up even in stones smaller than 4 mm. Our objective was to examine the natural history, complications, and re-intervention rates of fragments following ureteroscopy.