Abstract:
INTRODUCTION:Percutaneous stone removal increasingly plays an important role among the different approaches of interventional stone therapy, particularly since the development of miniaturized instruments is resulting in lower morbidity for the patients. One major drawback of smaller instruments is the increased difficulty of stone retrieval after disintegration due to the reduced tract diameter. This results in longer operation time and the need of additional tools such as disposable retrieval baskets. One of the key factors in the development of minimally invasive percutaneous nephrolitholapaxy (MIP) was the design of an Amplatz sheath which provides a built-in vacuum cleaner effect for stone retrieval. METHODS:A series of flow analyses with the gauges and shapes of the most commonly used nephroscopes and sheaths in percutaneous nephrolitholapaxy was performed by computational fluid dynamics. Flow velocity and direction in front of the nephroscope were computed and visualized by the software. RESULTS:In our study, the vacuum cleaner effect developed exclusively when a round-shaped nephroscope was used (Nagele Miniature Nephroscope System, Karl Storz GmbH & Co. KG) and depended on the relation between nephroscope diameter and inner sheath diameter. The strongest effect was observed with a 12 F nephroscope and an inner sheath diameter of 15 F. It did not develop when an oval- or crescent-shaped nephroscope was used. In front of the distal end of the round-shaped nephroscope, a slipstream develops, induced by the excursive change of width of the fluid flow on the outlet of the flushing canal. This allows the adhesion of a stone fragment in the eddy while the fluid flow is circulating around the stone. CONCLUSION:This study illustrates and explains the vacuum cleaner effect which has been detected in the development of the Nagele Miniature Nephroscope System used in MIP. It combines the reduced morbidity of smaller kidney puncture diameters with the benefit of quick and complete stone removal.
journal_name
World J Uroljournal_title
World journal of urologyauthors
Nicklas AP,Schilling D,Bader MJ,Herrmann TR,Nagele U,Training and Research in Urological Surgery and Technology (T.R.U.S.T.)-Group.doi
10.1007/s00345-015-1541-4subject
Has Abstractpub_date
2015-11-01 00:00:00pages
1847-53issue
11eissn
0724-4983issn
1433-8726pii
10.1007/s00345-015-1541-4journal_volume
33pub_type
杂志文章abstract:OBJECTIVE:To assess the efficacy and safety of Adjustable Transobturator Male System (ATOMS) compared to male Readjustment Mechanical External (REMEEX) system for post-prostatectomy incontinence (PPI). MATERIAL AND METHODS:A systematic review and meta-analysis on adjustable device ATOMS compared to male REMEEX is pres...
journal_title:World journal of urology
pub_type: 杂志文章
doi:10.1007/s00345-020-03300-1
更新日期:2020-06-11 00:00:00
abstract::In this prospective study a comparison of 4-versus 7-MHz transrectal ultrasonography for the detection of prostatic carcinoma is reported. A total of 150 prostates were biopsied due to suspicion of malignancy arising at either digital rectal examination, 4- and/or 7-MHz transrectal ultrasonography, or elevated serum p...
journal_title:World journal of urology
pub_type: 杂志文章
doi:10.1007/BF00182174
更新日期:1993-01-01 00:00:00
abstract:PURPOSE:To assess oncologic outcomes after salvage radiotherapy (SRT) without androgen deprivation therapy (ADT) in patients with persistently detectable PSA after radical prostatectomy (RT). METHODS:Two hundred and one patients who failed to achieve an undetectable PSA received SRT without ADT. The primary endpoint w...
journal_title:World journal of urology
pub_type: 杂志文章,多中心研究
doi:10.1007/s00345-013-1214-0
更新日期:2014-10-01 00:00:00
abstract::The most important phosphates involved in urinary stone disease are carbonate apatite, brushite, and struvite. Overall, phosphate stones account for 12-20% of all stones, with a downward trend for struvite and an increase in carbonate apatite being observed in the last decade. The physicochemical basis for the formati...
journal_title:World journal of urology
pub_type: 杂志文章,评审
doi:10.1007/s003450050152
更新日期:1999-10-01 00:00:00
abstract:PURPOSE:It was our aim in this study to develop a technique that is rather simple, overcomes the problems of Devine and Horton glanuloplasty in patients with small glans, and is flexible to be tailored to any hypospadias surgery. METHODS:A total of 11 patients were included in this preliminary report. A triangular ski...
journal_title:World journal of urology
pub_type: 杂志文章
doi:10.1007/s00345-009-0386-0
更新日期:2009-10-01 00:00:00
abstract::It has been brought to our attention that the first sentence of the Conclusion in the original publication [1] is incorrect. We have removed this sentence and the correct version can be found in this Erratum. ...
journal_title:World journal of urology
pub_type: 已发布勘误
doi:10.1007/s00345-019-02929-x
更新日期:2020-09-01 00:00:00
abstract:OBJECTIVE:To evaluate whether elderly patients aged ≥ 75 years with locally advanced prostate cancer (LAPC) may benefit from local treatment (LT). METHODS:Elderly patients aged ≥ 75 years with non-metastatic cT3-4 LAPC who were treated with LT [radical prostatectomy (RP), radiation therapy (RT)] or non-LT (NLT) were i...
journal_title:World journal of urology
pub_type: 杂志文章
doi:10.1007/s00345-018-2389-1
更新日期:2019-02-01 00:00:00
abstract:PURPOSE:XPA-210 is a proliferation marker derived from Thymidine kinase-1. It is of clinical significance in kidney, breast, and bladder cancer. There are no data available for XPA-210 in prostate cancer (PC). Herein, we aim to determine the clinical usefulness of XPA-210 in PC. MATERIALS AND METHODS:In a retrospectiv...
journal_title:World journal of urology
pub_type: 杂志文章
doi:10.1007/s00345-011-0768-y
更新日期:2012-08-01 00:00:00
abstract:PURPOSE:Previous studies examining the management of urinary tract infections (UTI) showed marked variability in the economical burden of care, with a tenfold increase in costs when patients require admission to the hospital. We sought to examine the patient and emergency department (ED) characteristics associated with...
journal_title:World journal of urology
pub_type: 杂志文章,多中心研究
doi:10.1007/s00345-013-1167-3
更新日期:2014-06-01 00:00:00
abstract::Urinary tract infection (UTI) remains the most common type of infection contracted by kidney transplant patients. UTI reduces both patient and graft survival. Understanding and managing UTI in transplant patients requires an appreciation of their unique anatomy and physiology. Both the transplant and native urinary sy...
journal_title:World journal of urology
pub_type: 杂志文章,评审
doi:10.1007/s00345-019-02742-6
更新日期:2020-01-01 00:00:00
abstract::Robotic surgery was started in the Department of Urology, Hospital Kuala Lumpur, in April 2004. We present our experience in developing the program and report the results of our first 50 cases of robotic radical prostatectomy. A three-arm da Vinci robotic system was installed in our hospital in March 2004. Prior to in...
journal_title:World journal of urology
pub_type: 杂志文章
doi:10.1007/s00345-006-0069-z
更新日期:2006-06-01 00:00:00
abstract::Successful management of transitional-cell carcinoma of the urinary bladder is greatly dependent upon regular surveillance and early detection of persistent or recurrent carcinoma. The development of a highly sensitive urinary test for the detection of transitional-cell carcinoma of the bladder could have a dramatic i...
journal_title:World journal of urology
pub_type: 杂志文章,评审
doi:10.1007/BF02201981
更新日期:1997-01-01 00:00:00
abstract:PURPOSE:To investigate the spontaneous clearance rates of remnant particles following miniaturized percutaneous nephrolithotomy (mini-PCNL) and retrograde intrarenal surgery (RIRS). METHODS:Among 624 patients who underwent mini-PCNL or RIRS at our institution from 2011 to 2015, we collected data of 247 patients with 2...
journal_title:World journal of urology
pub_type: 杂志文章
doi:10.1007/s00345-016-1807-5
更新日期:2016-11-01 00:00:00
abstract::Serotonin (5-hydroxytryptamine; 5-HT), a vasoactive bioamine with potent contractile activity, is thought to act indirectly in the urinary bladder by the stimulation of its presynaptic receptors. This results in the release of acetylcholine (ACh), which then acts on muscarinic receptors to produce bladder contractilit...
journal_title:World journal of urology
pub_type: 杂志文章
doi:10.1007/s003450050142
更新日期:1999-10-01 00:00:00
abstract:PURPOSE:Robotic partial nephrectomy (RPN) is a minimally-invasive technique used to treat renal tumors. A clinical pathway and prospective research protocol (AMBU-REIN) were specifically set up to establish and assess the routine use of day-case RPN. METHODS:The AMBU-REIN study was conducted in the framework of the Fr...
journal_title:World journal of urology
pub_type: 杂志文章
doi:10.1007/s00345-020-03283-z
更新日期:2020-06-08 00:00:00
abstract:PURPOSE:For the treatment of persistent post-prostatectomy incontinence (PPI), several surgical treatment options including male slings are available. In 2010, the second generation of the retrourethral male sling Advance, AdVanceXP, was introduced. Aim of the study was to examine in a prospective multicentre study the...
journal_title:World journal of urology
pub_type: 杂志文章,多中心研究
doi:10.1007/s00345-015-1731-0
更新日期:2016-07-01 00:00:00
abstract::We are fortunate that our ability to diagnose the specific adrenal entities that mandate a surgical approach is extremely accurate. The combination of analytical methodology to measure the appropriate adrenocortical and medullary hormone production and the radiology techniques for localization are superb. The manageme...
journal_title:World journal of urology
pub_type: 杂志文章,评审
doi:10.1007/s003450050103
更新日期:1999-02-01 00:00:00
abstract:BACKGROUND:Different methods for induction and monitoring of urethral sphincter deficiency were explored in a large animal model. METHODS:Sphincter deficiency was established in female pigs by dilatation and cauterization, and amount and frequencies of voiding were monitored and explored by pad test. Sphincteric closu...
journal_title:World journal of urology
pub_type: 杂志文章
doi:10.1007/s00345-017-2088-3
更新日期:2017-12-01 00:00:00
abstract:PURPOSE:To assess the effects of warm ischaemia time (WIT) on renal function after laparoscopic partial nephrectomy (LPN) for renal masses in patients with a normal contralateral kidney. METHODS:From October 2006 to December 2008, 53 patients treated with LPN were enrolled in this prospective study. Effective renal pl...
journal_title:World journal of urology
pub_type: 临床试验,杂志文章
doi:10.1007/s00345-011-0729-5
更新日期:2012-04-01 00:00:00
abstract:PURPOSE:To evaluate the diagnostic potential of choline measurements by in vivo magnetic resonance spectroscopy (MR spectroscopy) for diagnosis of renal masses. METHODS:Twenty-eight patients with 29 renal lesions underwent prospectively preoperative 3 T MR spectroscopy of renal masses before diagnostic tissue confirma...
journal_title:World journal of urology
pub_type: 杂志文章
doi:10.1007/s00345-014-1272-y
更新日期:2015-01-01 00:00:00
abstract::The development of human benign prostatic hyperplasia (BPH) clearly requires a combination of testicular androgens and the ageing process. Although the role of androgens as the causative factor for human benign prostatic hyperplasia is debated, they undoubtedly play, at least, a permissive role. The principal prostati...
journal_title:World journal of urology
pub_type: 杂志文章,评审
doi:10.1007/s00345-002-0248-5
更新日期:2002-04-01 00:00:00
abstract::This paper provides an overview of the scientific and practical aspects of assessing health-related quality of life (HRQL). The paper provides a brief overview of developments in the field and then discusses the definition of HRQL. The different types of HRQL measure available to researchers are described, with specif...
journal_title:World journal of urology
pub_type: 杂志文章,评审
doi:10.1007/s003450050132
更新日期:1999-08-01 00:00:00
abstract:PURPOSE:Partial nephrectomy (PN) outcomes may be better at academic institutions than at non-academic centers. Peer-review, sub-specialized practice profile, higher individual surgeon and institutional caseload may explain this observation. To the best of our knowledge, the role of institutional academic affiliation ha...
journal_title:World journal of urology
pub_type: 杂志文章
doi:10.1007/s00345-011-0759-z
更新日期:2012-08-01 00:00:00
abstract:PURPOSE:We aim to analyze the efficacy of different focus sizes and the influence of pulse pressure (intensity) during shock wave lithotripsy (SWL) in terms of stone fragmentation. METHODS:Combination of three focal sizes (F1 = 2 mm, F2 = 4 mm, F3 = 8 mm) and 11 output pressure settings (intensity 10-20) of a piezoele...
journal_title:World journal of urology
pub_type: 杂志文章
doi:10.1007/s00345-019-03069-y
更新日期:2020-10-01 00:00:00
abstract::The original article can be found online. ...
journal_title:World journal of urology
pub_type: 已发布勘误
doi:10.1007/s00345-020-03495-3
更新日期:2020-10-24 00:00:00
abstract:PURPOSE:The mechanisms responsible for the pathogenesis of long-term renal damage induced by extracorporeal shock wave lithotripsy (ESWL) are not clear. The present study was designed to investigate the role of nuclear factor κB (NFκB) signal pathway in the pathogenesis of chronic shock wave-induced renal damage in rat...
journal_title:World journal of urology
pub_type: 杂志文章
doi:10.1007/s00345-010-0515-9
更新日期:2010-10-01 00:00:00
abstract:PURPOSE:Oxidative stress is believed to be one of the important etiologies in carcinogenesis that has not been systemically investigated in urothelial carcinoma (UC). Through data mining from a published transcriptomic database of UC of urinary bladders (UBUCs) (GSE31684), glutathione peroxidase 2 (GPX2) was identified...
journal_title:World journal of urology
pub_type: 杂志文章
doi:10.1007/s00345-015-1522-7
更新日期:2015-11-01 00:00:00
abstract::The results of changing treatment modalities in 690 consecutive patients with low stages nonseminomatous germ-cell tumors (NSGCT) of the testis were analyzed. Overall, 120 patients (17.4%) suffered relapses, and 25 (3.6%) died of cancer after a follow-up period ranging from 2 to 20 years. The indications for primary (...
journal_title:World journal of urology
pub_type: 临床试验,杂志文章
doi:10.1007/BF00192265
更新日期:1994-01-01 00:00:00
abstract:OBJECTIVE:To assess treatments and survival of patients with muscle invasive bladder cancer (MIBC) in the Comprehensive Cancer Center Northern Netherlands (CCCN) region. STUDY DESIGN AND SETTING:Retrospective cohort analysis. Data of 548 patients with MIBC diagnosed between 1997 and 2002 were collected from the CCCN c...
journal_title:World journal of urology
pub_type: 杂志文章
doi:10.1007/s00345-010-0546-2
更新日期:2010-08-01 00:00:00
abstract::Intratesticular varicocele is a rare condition with a variable clinical and ultrasound presentation. The purpose of this study was to evaluate the grey scale and color Doppler appearances of intratesticular varicocele (ITV). Herein we present seven new cases of intratesticular varicocele. From 2003 to 2005 we evaluate...
journal_title:World journal of urology
pub_type: 杂志文章
doi:10.1007/s00345-007-0216-1
更新日期:2008-02-01 00:00:00