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  • 1
    UID:
    (DE-627)1876200553
    Format: 6 , Illustrationen
    ISSN: 2194-7236
    Content: This study is aimed to determine whether postoperative low dose computed tomography (LDCT) imaging is necessary after percutaneous nephrolithotomy (PCNL), or the surgeon's intraoperative assessment of residual fragments (RF) is sufficient and avoidance of postoperative imaging with reduction of radiation exposure can be achieved. Data of all 610 patients who underwent PCNL in prone position in our institution from February 2009 to September 2020 was collected. Parameters such as age, gender, BMI, ASA-Classification, stone related parameters and the surgeon’s assessment of stone-free status were analyzed. The LDCT performed postoperatively was compared to the intraoperative assessment of the surgeon regarding RF. The mean age of patients was 52.82 years; the mean BMI was 28.18 kg/m2. In 418 cases, the surgeon made a clear statement about the presence of RF and postoperative LDCT was carried out. The discrepancy between the two methods (surgeon´s assessment vs. LDCT) was significant at p 〈 0.0001. The sensitivity, specificity, positive and negative predictive value of the surgeon when assessing RF were 24.05%, 99.45%, 98.28% and 50%. Stone free rate (SFR) after primary PCNL was 45.57%. The overall SFR at discharge was 96.23%. Although the surgeon´s assessment of RF was reliable, postoperative LDCT imaging should still be performed if endoscopic stone clearance is suspected due to the high false negative rate and the low negative predictive value. The optimal timing of postoperative imaging following PCNL remains unclear.
    Note: Online veröffentlicht: 6. October 2023 , Gesehen am 15.12.2023
    In: Urolithiasis, Berlin : Springer, 2013, 51(2023), Artikel-ID 120, Seite 1-6, 2194-7236
    In: volume:51
    In: year:2023
    In: elocationid:120
    In: pages:1-6
    In: extent:6
    Language: English
    URL: Volltext  (kostenfrei)
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  • 2
    UID:
    (DE-627)1581338813
    Format: 10
    ISSN: 2194-7236
    Content: ObjectiveTo analyze the current evidence on the use of ureteroscopy (URS) and extracorporeal shock wave lithotripsy (ESWL) for the management of obstructing ureteral stones in emergent setting.MethodsA systematic literature review was performed up to June 2016 using Pubmed and Ovid databases to identify pertinent studies. The PRISMA criteria were followed for article selection. Separate searches were done using a combinations of several search terms: “laser lithotripsy”, “ureteroscopy”, “extracorporeal shock wave lithotripsy”, “ESWL”, “rapid”, “immediate”, “early”, “delayed”, “late”, “ureteral stones”, “kidney stones”, “renal stones”. Only titles related to emergent/rapid/immediate/early (as viably defined in each study) versus delayed/late treatment of ureteral stones with either URS and/or ESWL were considered for screening. Demographics and operative outcomes were compared between emergent and delayed lithotripsy. RevMan review manager software was used to perform data analysis.ResultsFour studies comparing emergent (n = 526) versus delayed (n = 987) URS and six studies comparing emergent (n = 356) versus delayed (n = 355) SWL were included in the analysis. Emergent URS did not show any significant difference in terms of stone-free rate (91.2 versus 90.9%; OR 1.04; CI 0.71, 1.52; p = 0.84), complication rate (8.7% for emergent versus 11.5% for delayed; OR 0.94; CI 0.65, 1.36; p = 0.74) and need for auxiliary procedures (OR 0.85; CI 0.42, 1.7; p = 0.85) when compared to delayed URS. Emergent ESWL was associated with a higher likelihood of stone free status (OR 2.2; CI 1.55, 3.17; p 〈 0.001) and a lower likelihood of need for auxiliary maneuvers (OR 0.49; CI 0.33, 0.72; p 〈 0.001) than the delayed procedure. No differences in complication rates were noticed between the emergent and delayed ESWL (p = 0.37).ConclusionsEmergent lithotripsy, either ureteroscopic or extracorporeal, can be offered as an effective and safe treatment for patients with symptomatic ureteral stone. If amenable to ESWL, based on stone and patient characteristics, an emergent approach should be strongly considered. Ureteroscopy in the emergent setting is mostly reserved for distally located stones. The implementation of these therapeutic approaches is likely to be dictated by their availability.
    Note: Gesehen am 26.09.2018
    In: Urolithiasis, Berlin : Springer, 2013, 45(2017), 6, Seite 563-572, 2194-7236
    In: volume:45
    In: year:2017
    In: number:6
    In: pages:563-572
    In: extent:10
    Language: English
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  • 3
    Online Resource
    Online Resource
    UID:
    (DE-627)1678135445
    Format: 11
    ISSN: 2194-7236
    Content: Since the introduction of ESWL, PNL and URS during the early 1980s the application rate of ESWL has declined while those of PNL and URS have increased. This is mainly due to the facts that instruments and techniques for Intracorporeal Lithotripsy (IL) have made a continuous progress. This review shows that today an array of options for IL within the entire urinary tract is available to treat stones in a perfect minimal invasive way. At the same time further improvements of IL are already visible.
    Note: Gesehen am 04.10.2019 , Published online: 4 December 2017
    In: Urolithiasis, Berlin : Springer, 2013, 46(2018), 1, Seite 19-29, 2194-7236
    In: volume:46
    In: year:2018
    In: number:1
    In: pages:19-29
    In: extent:11
    Language: English
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  • 4
    UID:
    (DE-627)1582308497
    Format: 14
    ISSN: 2194-7236
    Content: Randall’s plaques (RP) are preferred sites for the formation of calcium oxalate monohydrate (COM) kidney stones. However, although processes of interstitial calcium phosphate (CaP) plaque formation are not well understood, the potential of plaque microstructures as indicators of CaP precipitation conditions received only limited attention. We investigated RP-associated COM stones for structural details of the calcified tissues and microstructural features of plaque-stone interfaces as indicators of the initial processes of stone formation. Significantly increased CaP supersaturation can be expected for interstitial fluid, if reabsorbed ions from the tubular system continuously diffuse into the collagenous connective tissue. Densely packed, fine-grained CaP particles were found in dense textures of basement membranes while larger, laminated particles were scattered in coarse-meshed interstitial tissue, which we propose to be due to differential spatial confinements and restrictions of ion diffusion. Particle morphologies suggest an initial precipitation as metastable amorphous calcium phosphate (ACP). Morphologies and arrangements of first COM crystals at the RP-stone interface ranged from stacked euhedral platelets to skeletal morphologies and even porous, dendritic structures, indicating, in this order, increasing levels of COM supersaturation. Furthermore, these first COM crystals were often coated with CaP. On this basis, we propose that ions from CaP-supersaturated interstitial fluid may diffuse through porous RP into the urine, where a resulting local increase in COM supersaturation could trigger crystal nucleation and, hence, initiate stone formation. Ion-depleted fluid in persistent pores of initial COM layers may get replenished from interstitial fluid, leading to CaP precipitation in porous COM.
    Note: Gesehen am 25.10.2018 , Published online: 1 October 2016
    In: Urolithiasis, Berlin : Springer, 2013, 45(2017), 3, Seite 235-248, 2194-7236
    In: volume:45
    In: year:2017
    In: number:3
    In: pages:235-248
    In: extent:14
    Language: English
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  • 5
    UID:
    (DE-627)1571686932
    Format: 9
    ISSN: 2194-7236
    Content: The role of flexible ureteroscopy (FURS) in the management of nephrolithiasis has increased due to the improved armamentarium. However, FURS still represents a challenging technique limiting its diffusion. Similar to previous experiences in laparoscopy, recently developed robotic devices may significantly compensate for the ergonomic deficiencies of FURS. Based on a short description of the history of robotic devices for laparoscopy, this article summarizes all current developments of robotic FURS. In 2008, robotic FURS was first reported using the Sensei-Magellan system designed for interventional cardiology. However, with this device the ureteroscope was only passively manipulated, which represented the main reason why this project has been discontinued after 18 clinical cases. Avicenna Roboflex™ was especially developed for FURS. It consists of a surgeon’s console and manipulator of a flexible ureterorenoscope. The console provides an adjustable seat with armrests and two manipulators of the endoscope: the right wheel enables deflection and the left horizontal joystick allows rotation as well as advancing and retracting the instrument. The speed of rotation and advancement can be regulated at the screen of the console. Using the IDEAL system for evaluation of new robotic devices, safety and efficacy of the system could be demonstrated in two multi-centric studies providing significant improved ergonomics for the surgeon (IDEAL stage 1 and 2). Future studies are necessary to determine the final role of robotic FURS.
    Note: First Online: 23 November 2017 , Gesehen am 04.04.2018
    In: Urolithiasis, Berlin : Springer, 2013, 46(2018), 1, Seite 69-77, 2194-7236
    In: volume:46
    In: year:2018
    In: number:1
    In: pages:69-77
    In: extent:9
    Language: English
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  • 6
    UID:
    (DE-627)1584503963
    Format: 8
    ISSN: 2194-7236
    Content: The simultaneous surgical management of ureteropelvic junction obstruction (UPJO) with concomitant renal stones has evolved the last 20 years; hence, the ideal minimally invasive technique is still controversial. Laparoscopic and robot-assisted laparoscopic operations allow precise surgical maneuvers and were thought to simplify the reconstruction steps of the procedure, especially in the treatment of complex cases with large stones. The aim of this study was to summarize the available perioperative and functional outcomes of minimally invasive available techniques. A non-systematic review of the literature was performed using a free-text protocol in the MEDLINE database. The terms used were “ureteropelvic junction obstruction,” “renal calculi” and “renal stones.” Furthermore, other significant relevant studies cited in the reference lists of the selected papers were also evaluated in the structure of this review. Currently, available evidence suggests that both laparoscopic and robotic-assisted techniques offer excellent surgical solutions in the field of UPJO reconstruction and renal stones removal. In the hands of experienced surgeons, laparoscopic and robotic pyeloplasty with concomitant stone removal is a safe procedure with high stone-free rates and UPJ patency. Minimally invasive pyeloplasty should constitute the first choice of treatment for concomitant renal stones and ureteropelvic junction obstruction.
    Note: Gesehen am 27.11.2018 , Published online: 2 November 2014
    In: Urolithiasis, Berlin : Springer, 2013, 43(2015), 1, Seite 5-12, 2194-7236
    In: volume:43
    In: year:2015
    In: number:1
    In: pages:5-12
    In: extent:8
    Language: English
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  • 7
    Online Resource
    Online Resource
    Berlin : Springer ; 41.2013 -
    UID:
    (DE-627)735684456
    Format: Online-Ressource
    ISSN: 2194-7236
    Additional Edition: 2194-7228
    Additional Edition: Erscheint auch als Druck-Ausgabe$n2013-2021 Urolithiasis Berlin : Springer, 2013 2194-7228
    Former: Vorg. Urological research
    Language: English
    Keywords: Zeitschrift
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  • 8
    Journal/Serial
    Journal/Serial
    Berlin : Springer ; 41.2013 -volume 49, number 6 (December 2021)
    UID:
    (DE-627)736560653
    Format: 30 cm
    ISSN: 2194-7228
    Note: Fortgesetzt als Online-Ausgabe , Ersch. 6x jährl.
    Additional Edition: 2194-7236
    Additional Edition: Erscheint auch als Online-Ausgabe Urolithiasis Berlin : Springer, 2013 2194-7236
    Former: Fortsetzung von Urological research
    Language: German
    Keywords: Zeitschrift
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  • 9
    Online Resource
    Online Resource
    Berlin : Springer ; 1.1973 - 40.2012
    UID:
    (DE-627)254236901
    Format: Online-Ressource
    ISSN: 1434-0879
    Note: Gesehen am 30.01.13 , Ersch. 6x jährl.
    Additional Edition: 0300-5623
    Additional Edition: Erscheint auch als Druck-Ausgabe Urological research Berlin : Springer, 1973 0300-5623
    Former: a journal of clinical and laboratory investigation in urolithiasis and related areas
    Later: Forts Urolithiasis
    Language: English
    Keywords: Urologie ; Zeitschrift
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  • 10
    Online Resource
    Online Resource
    Berlin : Springer ; 1.1973 - 40.2012
    UID:
    (DE-602)gbv_254236901
    Format: Online-Ressource
    ISSN: 1434-0879
    Note: Gesehen am 30.01.13 , Ersch. 6x jährl.
    Additional Edition: ISSN 0300-5623
    Additional Edition: Druckausg. Urological research Berlin : Springer, 1973 ISSN 0300-5623
    Former: a journal of clinical and laboratory investigation in urolithiasis and related areas
    Later: Forts. Urolithiasis
    Language: English
    Keywords: Urologie ; Zeitschrift
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