Abstract:
PURPOSE:Large stone burden can be treated ureteroscopically, but the treatment often requires more than one procedure. Placement of a preoperative stent may theoretically enhance stone clearance by dilating the ureter to facilitate both access and stone removal. This study determines the impact of stent placement before ureteroscopy on operative time, radiologic stone clearance, and reoperative rates. MATERIALS AND METHODS:We retrospectively reviewed the records of patients who underwent ureteroscopic stone intervention at our institution from 2002 to 2008 by a single surgeon. Nonstented matched controls were used for comparison. Demographics, stone characteristics (size, number, density, and location), presence of preprocedural ureteral stent, operative time, and results of postoperative imaging were compared between the two cohorts. Statistical analysis was performed. RESULTS:There were 104 patients included in the study (45 prestented and 59 nonstented). Median stone size was 1 cm (range 0.3-4 cm). Overall stone clearance was 95.8%. The median number of procedures was one. Prestenting significantly reduced operative time during first ureteroscopy in patients with large stone requiring multiple ureteroscopies (p = 0.008) and total operative time to stone clearance in patients with stone >1 cm (p = 0.01), but not in patients with stone burdens <1 cm (p = 0.48). Prestenting also significantly reduced reoperative rates in patients with stone burden >1 cm (p = 0.001), especially for stones located in proximal ureter and kidney. Prestenting improves postoperative radiologic clearance, but this was not statistically significant (p = 0.56). CONCLUSIONS:Results show that ureteroscopic lithotripsy of large stone burden can be performed with a high success rate. Preureteroscopic stent placement was associated with a decreased operative time and reoperative rates in patients with larger stone burdens of >1 cm.
journal_name
J Endouroljournal_title
Journal of endourologyauthors
Chu L,Sternberg KM,Averch TDdoi
10.1089/end.2010.0400subject
Has Abstractpub_date
2011-05-01 00:00:00pages
751-4issue
5eissn
0892-7790issn
1557-900Xjournal_volume
25pub_type
杂志文章abstract::Seminal vesicle cysts associated with other genitourologic abnormalities are rare. We describe the first known robot-assisted excision of a cystic seminal vesicle associated with ipsilateral renal agenesis in a symptomatic pediatric patient. The patient was discharged home on postoperative day 1 and remains symptom fr...
journal_title:Journal of endourology
pub_type: 杂志文章,评审
doi:10.1089/end.2006.0279
更新日期:2007-07-01 00:00:00
abstract:INTRODUCTION:Prestenting of the ureter is commonly performed to allow for passive dilation and better access to the urinary system during subsequent procedures. There is no level 1 evidence on the duration of prestenting and EAU guidelines suggest a 1-2 weeks duration. MATERIALS AND METHODS:Our primary aim is to inves...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2018.0872
更新日期:2019-04-01 00:00:00
abstract:INTRODUCTION/OBJECTIVE:We sought to examine the contemporary relationship between case volume and outcome for percutaneous nephrolithotomy (PCNL) using a publically available administrative database. METHODS:A weighted sample of 7785 patients was obtained from the 2010 Healthcare Cost and Utilization Project (HCUP) Na...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2013.0172
更新日期:2013-09-01 00:00:00
abstract:PURPOSE:The preliminary results of laparoscopic radical cystectomy in 85 patients are presented in this study. The functional and oncologic outcomes of this procedure in these patients are discussed. PATIENTS AND METHODS:Between December 2002 and May 2006, we performed 85 laparoscopic radical cystectomies with orthoto...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2007.0298
更新日期:2008-05-01 00:00:00
abstract::In one-third of patients, prostate cancer (PCa) is monofocal. These patients can undergo focal high-intensity focused ultrasound (HIFU) therapy of the tumor without damage to surrounding structures and not compromising uro-oncologic safety. Robot-assisted HIFU coagulates the entire targeted volume within the prostate ...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2009.0439
更新日期:2010-05-01 00:00:00
abstract:PURPOSE:To evaluate the use of virtual endoscopy (VE) for the investigation of the pelvicaliceal unit and the depiction of its anatomic deformities. PATIENTS AND METHODS:Two study groups were prospectively enrolled in our protocol: ten patients with nonurologic pathologies, and thus without any known deformity of the ...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2005.19.37
更新日期:2005-01-01 00:00:00
abstract:PURPOSE:Excessive bulking force during ureteral access sheath (UAS) placement may induce injury. The sliding friction between surfaces can be reduced with the application of ultrasonic vibration. We investigated the efficacy and safety of an ultrasonic vibration transducing device for reducing the maximal ureteral acce...
journal_title:Journal of endourology
pub_type: 杂志文章,随机对照试验
doi:10.1089/end.2018.0772
更新日期:2019-02-01 00:00:00
abstract:BACKGROUND AND PURPOSE:Kidney stone disease is rare in the South African black (B) population and more prevalent in the white (W) population. Genetic studies have not previously examined this anomaly. The AGT Pro11Leu polymorphism in the alanine:glyoxylate aminotransferase (AGT) enzyme has been suggested as possibly pl...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2013.0617
更新日期:2014-05-01 00:00:00
abstract::The authors have developed an ultrasonic aspirator to assist in urologic endoscopic surgery. It appeared that ultrasonic aspiration of bladder tumors was clinically efficient in transurethral surgery. Tumors 1 to 2 cm in diameter could be aspirated completely with this instrument alone. The application of the ultrason...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.1994.8.285
更新日期:1994-08-01 00:00:00
abstract:INTRODUCTION:The learning curve for robotic surgery is not completely defined, and ideal training components have not yet been identified. We attempted to determine whether skill development would be accelerated with formal, organized instruction in robotic surgical techniques versus informal practice alone. MATERIALS...
journal_title:Journal of endourology
pub_type: 杂志文章,随机对照试验
doi:10.1089/end.2009.0511
更新日期:2010-08-01 00:00:00
abstract:PURPOSE:To determine whether on-clamp partial nephrectomy (ON-PN) has any significant impact on long-term renal function in a two kidney model. PATIENTS AND METHODS:From November 1999 to July 2013, 607 patients underwent PN at our institution. After excluding patients with solitary kidneys, multiple renal masses, and ...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2014.0476
更新日期:2015-04-01 00:00:00
abstract:BACKGROUND AND PURPOSE:To evaluate the safety and efficacy of percutaneous nephrolithotomy (PCNL) for the management of complete staghorn calculi in children journal_title:Journal of endourology pub_type: 杂志文章 doi:10.1089/end.2005.19.968 更新日期:2005-10-01 00:00:00
abstract:PURPOSE:To assess the safety and efficacy of conversion from pure laparoscopy to hand-assisted laparoscopy to control mild-to-moderate bleeding during renal surgery. PATIENTS AND METHODS:Between August 2006 and August 2008, we performed 94 laparoscopic nephrectomies (44 partial and 50 radical). A total of three radica...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2010.0321
更新日期:2011-01-01 00:00:00
abstract::Pelvic organ prolapse is a common problem faced by many women, resulting in significant morbidity and negatively impacting quality of life. Sacrocolpopexy can treat women with vaginal vault prolapse, multicompartment prolapse, and/or a history of failed prolapse procedures. The transabdominal sacrocolpopexy has been s...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2012.0388
更新日期:2012-12-01 00:00:00
abstract:BACKGROUND AND PURPOSE:Robot-assisted partial nephrectomy has emerged as a viable surgical treatment for patients with certain renal tumors. We hypothesized that extirpation of more complex tumors, as graded with the nephrometry score, would result in worse operative and postoperative outcomes when compared with tumors...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2011.0003
更新日期:2011-10-01 00:00:00
abstract:BACKGROUND AND PURPOSE:Laparoscopic radical prostatectomy (LRP) is an established treatment for patients with prostate cancer in selected centers with appropriate expertise. We studied our single-center experience of developing a LRP service and subsequent training of two additional surgeons by the initial surgeon. We ...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2011.0635
更新日期:2012-07-01 00:00:00
abstract:PURPOSE:To demonstrate the safety and efficacy of percutaneous nephrolithotomy (PCNL) for management of large renal stones between single-functioning kidney and double-kidney patients. PATIENTS AND METHODS:Thirty single-functioning kidneys and 30 double-kidney patients with a mean age of 38.5 (±15.6) years in the sing...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2011.0083
更新日期:2012-03-01 00:00:00
abstract:PURPOSE:To evaluate the effect of increasing age of urology patients on the outcome of laparoscopic procedures. PATIENTS AND METHODS:We performed a retrospective review of patients undergoing laparoscopic urologic procedures from 1998 to 2005, comparing patients 75 or older with all other patients undergoing the same ...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2006.9997
更新日期:2007-01-01 00:00:00
abstract:OBJECTIVE:To assess the "body mass index" (BMI) (weight and length) of 12 flexible ureteroscopes (digital and fiber optic) along with the light cables and camera heads, to make the best use of our instruments. MATERIALS AND METHODS:Twelve different brand-new flexible ureteroscopes from four different manufacturers, al...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2017.0438
更新日期:2017-10-01 00:00:00
abstract:OBJECTIVE:To evaluate current practice patterns in U.S. emergency departments (EDs) for the diagnosis, treatment, and counseling of patients with ureteral calculi. METHODS:Hospital-based ED physicians were invited by e-mail to participate in a Survey-Monkey survey. E-mails were delivered in March 2008 by Direct Medica...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2008.0615
更新日期:2009-06-01 00:00:00
abstract:PURPOSE:To analyze the early outcome after single tract vs multiple tracts percutaneous nephrolithotomy (PCNL) in the management of staghorn calculi. PATIENTS AND METHODS:The records of 413 patients with staghorn calculi (223 [54%] had complete and 190 [46%] had partial) who underwent PCNL were reviewed retrospectivel...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2009.0456
更新日期:2010-06-01 00:00:00
abstract::A 32-year-old woman presented to us with complaints of paradoxical incontinence for a period of 6 months following a cesarean section for obstructed labor performed elsewhere and subsequently treated elsewhere. Clinical and urographic assessment revealed an iatrogenic ureterouterine fistula, which was successfully tre...
journal_title:Journal of endourology
pub_type: 杂志文章,评审
doi:10.1089/089277901317203056
更新日期:2001-12-01 00:00:00
abstract::Endoscopic fetal surgery may reduce preterm labor associated with open hysterotomy but is partially limited by current visualization technology. We investigated a three-dimensional (3D) imaging system coupled to a head-mounted display (3D-HMD) and also employed a computer-controlled zoom endoscope for noninsufflated a...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.1998.12.407
更新日期:1998-10-01 00:00:00
abstract:PURPOSE:To compare the maximal active deflection capabilities of a newly designed dual-deflection ureteroscope with those of a standard flexible ureteroscope. MATERIALS AND METHODS:The dual-deflection ureteroscope is similar in design to single-deflection ureteroscopes with the addition of a second, more proximal unid...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/089277904322959761
更新日期:2004-03-01 00:00:00
abstract:OBJECTIVE:To present the experience of pediatric percutaneous nephrolithotomy (PCNL) of our center. MATERIALS AND METHODS:This study was conducted from 1995 to 2015, on patients <15 years of age having renal and upper ureteral stones who underwent PCNL. Stones were classified as per Guy's stone score (GSS). Standard b...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2015.0842
更新日期:2017-03-01 00:00:00
abstract:BACKGROUND AND OBJECTIVES:Transurethral electrovaporization of the prostate (TVP) has been utilized increasingly in the therapeutic management of benign prostatic hyperplasia (BPH). The temperature profile within both prostatic and periprostatic tissue has been presented as a parameter of safety in various preliminary ...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.1999.13.53
更新日期:1999-02-01 00:00:00
abstract:PURPOSE:To determine the temperature-time threshold of local cell death in vivo for thermal therapy in a prostate cancer animal model and to use this value as a benchmark to quantify global tissue injury. MATERIALS AND METHODS:Two studies were designed in the Dunning AT-1 rat prostate tumor hind limb model. For both s...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/089277901750426436
更新日期:2001-08-01 00:00:00
abstract:INTRODUCTION/PURPOSE:Medical simulation offers the advantage of improving resident skill and comfort without impacting patient care. Five years ago, we identified trends in the use of robotic and laparoscopic simulation in 2008 and 2009 at American urology residency training programs. We seek to identify the changes in...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2015.0561
更新日期:2016-03-01 00:00:00
abstract:PURPOSE:Burst wave lithotripsy (BWL) is a transcutaneous technique with potential to safely and effectively fragment renal stones. Preclinical investigations of BWL require the assessment of potential renal injury. This study evaluates the capabilities of real-time ultrasound and MRI to detect and evaluate BWL injury t...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2017.0202
更新日期:2017-08-01 00:00:00
abstract:PURPOSE:The aim of this study is to assess the effectiveness, safety, and reproducibility of the micro-ureteroscopy (m-URS) in the treatment of distal ureteral stones in women. MATERIALS AND METHODS:A multicenter, prospective observational study was designed and conducted between March and December 2015. We included w...
journal_title:Journal of endourology
pub_type: 杂志文章,多中心研究
doi:10.1089/end.2016.0503
更新日期:2016-11-01 00:00:00