Abstract:
BACKGROUND AND PURPOSE:The use of flexible ureteroscopy for diagnosis and management of upper urinary tract diseases is limited both by loss of maximum active deflection through the inserted working probes and a high frequency of damage with consequent costs. A newly developed ureteroscope (Flex-X, Karl Storz) with a maximized angle of deflection was introduced to overcome these problems. The aim of our study was to compare this new ureteroscope with an established device in vitro, ex vivo, and in a clinical approach. MATERIALS AND METHODS:Angles of maximum active deflection and maximum irrigation flow were measured for both scopes in vitro with an empty working channel and after introduction of different lithotripsy and stone extraction probes. In addition, the loss of maximum active deflection and broken optical fibers of the scopes were assessed after 100 flexible ureteroscopies in an ex-vivo pig cadaver model. The clinical performance of both ureteroscopes was evaluated in 32 patients for management of lower pole stones. RESULTS:The new ureteroscope displays highly improved deflection compared with the standard scope; deflection angles as much as 270 degrees with an empty working channel were achieved. Thin probes did not inhibit maximum deflection. Durability in ex vivotrials was high. Only minimal loss of maximum deflection and three broken optical fibers were observed. In clinical usage, a stone-free rate of 100% was achieved after 4 weeks. In three patients, the opening mechanism of a basket did not work with maximum deflection because of high friction. CONCLUSION:The new ureterorenoscope facilitates retrograde stone management and might diminish repair intervals. Further development of comparable devices will support flexible ureterorenoscopy as a standard stone management procedure.
journal_name
J Endouroljournal_title
Journal of endourologyauthors
Wendt-Nordahl G,Trojan L,Alken P,Michel MS,Knoll Tdoi
10.1089/end.2006.0291subject
Has Abstractpub_date
2007-12-01 00:00:00pages
1439-44issue
12eissn
0892-7790issn
1557-900Xjournal_volume
21pub_type
杂志文章,随机对照试验abstract::One of the most difficult, time-consuming, and at the same time critical steps of laparoscopic pyeloplasty is ureteral spatulation. We describe a reproducible technique that greatly simplifies this surgical step. Using standard laparoscopic scissors, the ureter is partially cut just inferior to the ureteropelvic junct...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2011.0354
更新日期:2012-06-01 00:00:00
abstract::Because it is still a puzzling debate whether ligation of a unilateral varicose spermatic vein is worth performing by laparoscopy, even with the two-port technique, we conducted a study in which 280 patients with palpable left varicoceles were treated with spermatic vein ligation either by open surgery (120 patients) ...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.1996.10.435
更新日期:1996-10-01 00:00:00
abstract:: Aims: To compare outcomes of monopolar vs bipolar transurethral resection of the prostate (TURP) in the management of exclusively moderate-large volume prostatic hyperplasia in terms of maximum flow rate as a surrogate for clinical efficacy, duration of catheterization, ho...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2020.0840
更新日期:2020-12-28 00:00:00
abstract::A patient with a lymphocele after laparoscopic pelvic lymphadenectomy and radical retropubic prostatectomy was treated successfully with a single instillation of diatrizoate meglumine through a Jackson-Pratt drain. The authors review the origin of lymphoceles and various methods for treating them. ...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.1993.7.337
更新日期:1993-08-01 00:00:00
abstract:OBJECTIVE:To assess the association between the R.E.N.A.L. Nephrometry score, the amount of non-neoplastic parenchymal volume (NNPV) removed, and the renal function decline in patients undergoing robotic partial nephrectomy (RPN). PATIENTS AND METHODS:The Multi-institutional Mount Sinai Kidney Cancer Database was used...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2016.0337
更新日期:2016-10-01 00:00:00
abstract:PURPOSE:To evaluate the oncologic results of our operative technique, hand-assisted retroperitoneoscopic nephroureterectomy (HRNU), for the treatment of upper-tract urothelial cancer, various perioperative parameters and oncologic outcomes were compared for HRNU and conventional open nephroureterectomy (CONU). PATIENT...
journal_title:Journal of endourology
pub_type: 临床试验,杂志文章
doi:10.1089/end.2006.0336
更新日期:2007-06-01 00:00:00
abstract::Complications from laparoscopically placed staples are rare. We present two patients with ureteral obstruction secondary to eroded staples. Each patient had a remote history of laparoscopic abdominal or pelvic surgery and was treated with endoscopic removal and short-term ureteral stenting. The clinical presentation a...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2006.20.659
更新日期:2006-09-01 00:00:00
abstract::A new semiflexible and steerable cannula was designed for endoscopic reflux operations on infants and children. Because of its small diameter (0.6 mm; < 2F), it fits even through the 9F infant cystoscope. ...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.1994.8.131
更新日期:1994-04-01 00:00:00
abstract:INTRODUCTION:Renal papillary pits are commonly encountered during ureteroscopy. The mechanism by which such pits arise is unclear. One hypothesis is that pits represent sites where stones overgrowing Randall's plaque (RP) were dislodged. We sought to examine this theory by using digital ureteroscopy and stone μCT. MAT...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2018.0589
更新日期:2019-04-01 00:00:00
abstract::Urologists have witnessed replacement of complex open surgical procedures with minimally invasive therapies over the past quarter century. Nothing personifies this more than an anatrophic nephrolithotomy in the management of kidney stones. The Boyce procedure, once the gold standard for staghorn calculi, is rarely per...
journal_title:Journal of endourology
pub_type: 杂志文章,评审
doi:10.1089/end.2009.1548
更新日期:2009-10-01 00:00:00
abstract:: Background: Holmium laser enucleation of the prostate (HoLEP) is a highly effective procedure for benign prostatic hyperplasia that is size independent and has been recommended for patients necessitating antiplatelet (AP) and anticoagulant (AC) medications. Although HoLEP ...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2020.0886
更新日期:2021-01-06 00:00:00
abstract:OBJECTIVE:The aim of this study was to determine the efficacy of short-duration use of finasteride and dutasteride before transurethral resection of the prostate (TURP) on intraoperative blood loss and microvessel density (MVD) of prostate stroma and suburethral tissues in benign prostatic hyperplasia (BPH). METHODS:T...
journal_title:Journal of endourology
pub_type: 杂志文章,随机对照试验
doi:10.1089/end.2016.0696-rev
更新日期:2017-09-01 00:00:00
abstract:BACKGROUND AND PURPOSE:The gold standard treatment for upper-tract transitional-cell carcinoma is radical nephroureterectomy, but management of the distal ureter is not standardized. Two treatment options to detach the distal ureter are open cystotomy (OC) and excision of a bladder cuff or transurethral incision of the...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2006.0374
更新日期:2007-07-01 00:00:00
abstract::A trichobezoar with a calculus in the center was diagnosed in a young woman on long-term urethral catheter drainage. Urologists need to be aware of this potentially preventable complication to save patients from significant morbidity. ...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/0892779041271562
更新日期:2004-06-01 00:00:00
abstract::Laparoscopic pyeloplasty represents one of the more advanced reconstructive procedures for the urologist. While early reports were replete with long operative times, there have been several changes that have added to the efficiency of the procedure. In our practice, we have found three changes to be of greatest value:...
journal_title:Journal of endourology
pub_type: 杂志文章,评审
doi:10.1089/089277904773582750
更新日期:2004-04-01 00:00:00
abstract:BACKGROUND:To investigate perioperative outcomes, the learning curve, and 2-year follow-up after transurethral enucleation with bipolar (TUEB) for patients with benign prostatic hyperplasia (BPH). METHODS:From December 2011 to October 2016, 603 consecutive patients underwent TUEB for BPH, performed by a single surgeon...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2017.0092
更新日期:2017-07-01 00:00:00
abstract::In a 14-year-old boy with bladder augmentation, Mitrofanoff appendicovesicostomy, Malone antegrade enema stoma, and bladder neck reconstruction, urinary continence was restored by injection of Teflon with a Veress needle and the aid of a 2-mm laparoscopic port. The method has since been used for nine treatments in six...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/089277903765444401
更新日期:2003-05-01 00:00:00
abstract:: Purpose: To examine gas bubbles generated by two laser lithotripsy devices, a pulsed thulium solid-state laser and a holmium:yttrium-aluminum-garnet (Ho:YAG) device, and their possible effects in lithotripsy. Materials and Methods: ...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2020.0526
更新日期:2020-12-22 00:00:00
abstract::Abstract Since the first description of percutaneous nephrolithotripsy (PNL) over 30 years ago, the indications for this procedure in the management of upper tract urinary stones has greatly expanded. Despite recent advances in shock wave lithotripsy and ureteroscopic technologies, PNL maintains a dominant role in the...
journal_title:Journal of endourology
pub_type: 杂志文章,评审
doi:10.1089/end.2009.1518
更新日期:2009-10-01 00:00:00
abstract:INTRODUCTION:Expert-reported outcomes and complications may not reflect the standardized coding that can be provided by independent, third-party evaluations. The goal of this article is to compare expert-reported complications with standardized coding by the National Surgical Quality Improvement Program (NSQIP). The pr...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2015.0178
更新日期:2015-09-01 00:00:00
abstract:: Purpose: To examine the dusting performance of a novel solid state Thulium laser device compared to a standard holmium:yttrium-aluminum-garnet (Ho:YAG) device. Methods: This study compares a Dornier Medilas H Solvo 35 with an e...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2020.0525
更新日期:2020-09-09 00:00:00
abstract:BACKGROUND AND PURPOSE:Calculi from patients with musculoskeletal (MS) anomalies who are largely immobile and prone to urinary infections have been traditionally composed primarily of struvite and carbonate apatite. Because of substantial improvements in the care of these patients in recent decades, stone etiology may ...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2010.0698
更新日期:2011-09-01 00:00:00
abstract:OBJECTIVE:The purpose is to report our 10-year experience with surgical management of large or symptomatic adrenal myelolipoma. PATIENTS AND METHODS:Patients receiving surgical treatment for adrenal myelolipoma between December 2001 and September 2011 in our institution were retrospectively reviewed. Patients were div...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2013.0283
更新日期:2014-02-01 00:00:00
abstract:BACKGROUND AND PURPOSE:Benign prostatic hyperplasia (BPH) affects more than 50% of men by the age of 60 and 90% by age 85. Many of these men are not candidates for surgical procedures such as transurethral resection of the prostate (TURP), stimulating the development of less-invasive forms of therapy. We studied the ut...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2005.19.159
更新日期:2005-03-01 00:00:00
abstract:INTRODUCTION:Open nephrectomy is associated with significant morbidity. For several years, minimally invasive alternatives have been developed such as laparoscopic nephrectomy or transarterial renal ablation. This paper focuses on the different principles of vaso-occlusion and further improvements of the technique such...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2007.9826
更新日期:2008-04-01 00:00:00
abstract:: Purpose: Photoselective vaporization of the prostate (PVP) with a 940-nm diode laser is an option for treating symptoms caused by benign prostatic hyperplasia (BPH). Here, we present our experience using this technology. Methods: ...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2019.0311
更新日期:2019-12-01 00:00:00
abstract:OBJECTIVES:We evaluated the feasibility and effectiveness of percutaneous urinary diversion in patients with obstructive uropathy. PATIENTS AND METHODS:A total of 206 percutaneous nephrostomies (PCNs) (right-sided in 54, left in 56, and bilateral in 48) were performed in 102 male and 57 female patients 18 to 94 years ...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2000.14.401
更新日期:2000-06-01 00:00:00
abstract:PURPOSE:To determine whether day-case surgery (DS) laparoscopic pyeloplasty (LP) is feasible and safe. PATIENTS AND METHODS:Thirty-two consecutive patients, planned for DS LP between March 2006 and January 2010 at a single urologic center, were enrolled in this retrospective observational study. Every patient underwen...
journal_title:Journal of endourology
pub_type: 杂志文章
doi:10.1089/end.2010.0486
更新日期:2011-05-01 00:00:00
abstract:PURPOSE:To evaluate the efficacy and safety of retroperitoneal laparoscopic pyelolithotomy (RLP) versus percutaneous nephrolithotomy (PCNL) for large renal pelvic calculi using a randomized controlled trial. MATERIALS AND METHODS:Patients with large renal pelvic calculi were prospectively randomized using matched-pair...
journal_title:Journal of endourology
pub_type: 杂志文章,随机对照试验
doi:10.1089/end.2014.0064
更新日期:2014-08-01 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