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Zong Y, Zhu Y, Han P, Wang Z, Pu J, Gu M, Lu P. Safety of flexible ureteroscopic lithotripsy with 365 μm fibers of Ho: YAG laser: a short-term follow-up. Lasers Med Sci 2024; 39:258. [PMID: 39400745 DOI: 10.1007/s10103-024-04209-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Accepted: 10/03/2024] [Indexed: 10/15/2024]
Abstract
Our previous study first reported the efficacy of FURL using 365 μm fibers with holmium: yttrium aluminum garnet (Ho: YAG) laser lithotripsy. This study evaluates the 16-week safety of this procedure. A prospective cohort study was conducted, and the clinical characteristics of patients who underwent FURL using 365 μm fibers with Ho: YAG laser were retrospectively collected. Descriptive statistics were reported, and logistic regression analysis was conducted to identify risk factors influencing the stone-free rate (SFR). Infection-related laboratory parameters, including white blood cell count (WBC), procalcitonin (PCT), and C-reactive protein (CRP), were collected. Regression analysis was conducted to identify risk factors for the development of urosepsis post-surgery. Additionally, a 16-week follow-up was conducted in outpatient clinics, and kidney function was assessed. A total of 274 patients participated in this study. The 4-week stone-free rate (SFR) following FURL with 365 μm fibers of Ho: YAG laser was significantly associated with stone size and composition. No severe complications were observed following FURL procedures. There were no significant differences in white blood cell count (WBC), C-reactive protein (CRP), and procalcitonin (PCT) in peripheral blood before and after FURL procedures. Urosepsis was diagnosed in 1.82% of patients. Preoperative white blood cell count (WBC) in urine and preoperative urine culture results were identified as significant risk factors. Kidney function remained stable at 4 and 16 weeks following FURL. This prospective cohort study demonstrated the high safety of FURL with 365 μm fibers of Ho: YAG laser, as infection-related parameters during the perioperative period showed no significant differences, and kidney function remained stable throughout the 16-week follow-up.
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Affiliation(s)
- Yiping Zong
- Department of Urology, The Affiliated Yixing Hospital of Jiangsu University, Yixing, 214200, China
| | - Yongqian Zhu
- Department of Medical Quality Management, The First Affiliated Hospital with Nanjing Medical University, Nanjing, 210029, China
| | - Peng Han
- Department of Urology, The First Affiliated Hospital with Nanjing Medical University, Nanjing, 210029, China
| | - Zijie Wang
- Department of Urology, The First Affiliated Hospital with Nanjing Medical University, Nanjing, 210029, China
| | - Junyan Pu
- Department of Urology, The First Affiliated Hospital with Nanjing Medical University, Nanjing, 210029, China
| | - Min Gu
- Department of Urology, The First Affiliated Hospital with Nanjing Medical University, Nanjing, 210029, China.
| | - Pei Lu
- Department of Urology, The First Affiliated Hospital with Nanjing Medical University, Nanjing, 210029, China.
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Kaile Z, Jiafu L, Wenyao L, Xi Y, Ding L, Rong C, Qiang F. Three-dimensional printing the navigation template for precise percutaneous renal puncture to treat pyonephrosis on a porcine model and a patient :a case report. Heliyon 2024; 10:e32394. [PMID: 38947481 PMCID: PMC11214351 DOI: 10.1016/j.heliyon.2024.e32394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 05/31/2024] [Accepted: 06/03/2024] [Indexed: 07/02/2024] Open
Abstract
Objective Percutaneous nephrolithotomy (PCNL) is the main method for pyonephrosis or lithotripsy in urology. However, it often comes with high risk, as the inaccurate puncture inevitably causes bleeding, intra- and post-operative complications. So, a new inter-disciplinary approach is needed to perform the puncture more accurately. Methods 3 signs made of lead were marked onto the skin of the posterior side of the waist of a domestic pig or a patient, which was scanned by computed tomography (CT). Based on the CT images, the computer design and the 3D printing, a navigation template made of the transparent resin material is constructed. They were attached onto the surgical area on pig or patient according to the signs. During the PCNL, with this template, the puncture position, angle and depth were optimized in order to precisely enter the targeted renal pelvis or calices. Results With the 3D navigation templates, 18G puncture needles were used to enter the renal pelvis upon performing the PCNL on a porcine model and a patient. On the porcine model, the urine outflow was observed with minimal complication. Post-operative CT scans revealed that the needle was located in the renal pelvis. For the patient case, the puncture point was designed to target the calix with stone. No obvious bleeding and complication was found in renal puncture with template. Conclusions The navigation template was made with the combination of 3D printing, CT images and computer design. This template allows for accurate puncture of the renal pelvis or calix. Surgical improvement in kidney stones and pyonephrosis was observed in porcine model and patient case. In the future, prospective, trandomized, controlled clinical trials are needed to further confirm its advantage.
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Affiliation(s)
- Zhang Kaile
- The Department of Urology, Affiliated Sixth People's Hospital, Shanghai Jiao tong University school of medicine, Shanghai, 200233, China
| | - Liu Jiafu
- School of Material Engineering, Shanghai University of Engineering Science, Shanghai, 201620, China
| | - Li Wenyao
- School of Material Engineering, Shanghai University of Engineering Science, Shanghai, 201620, China
| | - Yang Xi
- Suzhou Novaprint regenerative medicine limited company, 111 Rd., Suzhou, China
| | - Li Ding
- Shanghai Guanghua Hospital of Integrative Medicine, Shanghai, 200052, China
| | - Chen Rong
- The Department of Urology, Affiliated Sixth People's Hospital, Shanghai Jiao tong University school of medicine, Shanghai, 200233, China
| | - Fu Qiang
- The Department of Urology, Affiliated Sixth People's Hospital, Shanghai Jiao tong University school of medicine, Shanghai, 200233, China
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Tsaturyan A, Keller EX, Peteinaris A, Gabriel FC, Pietropaolo A, Ballesta Martinez B, Tatanis V, Ventimiglia E, Esperto F, Sener TE, De Coninck V, Emiliani E, Hameed BMZ, Talso M, Mykoniatis I, Tzelves L, Kallidonis P. Fluid dynamics within renal cavities during endoscopic stone surgery: does the position of the flexible ureteroscope and ureteral access sheath affect the outflow rate? World J Urol 2024; 42:240. [PMID: 38630158 DOI: 10.1007/s00345-024-04926-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Accepted: 03/06/2024] [Indexed: 04/19/2024] Open
Abstract
PURPOSE To evaluate the impact of ureteroscope position within renal cavities as well as different locations of the tip of the ureteral access sheath (UAS) on fluid dynamics during retrograde intrarenal surgery (RIRS). MATERIALS AND METHODS A prospective observational clinical study was performed. Measurements with a flexible ureteroscope placed in the upper, middle and lower calyces were obtained with the tip of the UAS placed either 2 cm below the pyelo-ureteric junction (PUJ), or at the level of the iliac crest. RESULTS 74 patients were included. The outflow rates from the middle and upper calyxes were statistically significantly higher compared to the lower calyx, both with the UAS close to the pyelo-ureteric junction and at the iliac crest. When the UAS was withdrawn and positioned at the level of the iliac crest, a significant decrease in outflow rates from the upper (40.1 ± 4.3 ml/min vs 35.8 ± 4.1 ml/min) and middle calyces (40.6 ± 4.0 ml/min vs 36.8 ± 4.6 ml/min) and an increase in the outflow from the lower calyx (28.5 ± 3.3 ml/min vs 33.7 ± 5.7 ml/min) were noted. CONCLUSIONS Our study showed that higher fluid outflow rates are observed from upper and middle calyces compared to lower calyx. This was true when the UAS was positioned 2 cm below the PUJ and at the iliac crest. Significant worsening of fluid dynamics from upper and middle calyces was observed when the UAS was placed distally at the level of the iliac crest. While the difference was statistically significant, the absolute change was not significant. In contrast, for lower calyces, a statistically significant improvement was documented.
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Affiliation(s)
- Arman Tsaturyan
- Department of Urology, Erebouni Medical Center, 0087, Yerevan, Armenia.
- EAU Young Academic Urologists (YAU) Urolithiasis and Endourology Working Group Arnhem, NL-6803, Arnhem, The Netherlands.
| | - Etienne X Keller
- EAU Young Academic Urologists (YAU) Urolithiasis and Endourology Working Group Arnhem, NL-6803, Arnhem, The Netherlands
- Department of Urology, University Hospital Zurich, University of Zurich, 8006, Zurich, Switzerland
| | | | - Faria-Costa Gabriel
- Department of Urology, Unidade Local de Saúde de Matosinhos, Matosinhos, Portugal
- Department of Surgery and Physiology, Faculty of Medicine of the University of Porto, Porto, Portugal
| | - Amelia Pietropaolo
- EAU Young Academic Urologists (YAU) Urolithiasis and Endourology Working Group Arnhem, NL-6803, Arnhem, The Netherlands
- Department of Urology, University Hospital Southampton NHS Foundation Trust, Southampton, SO16 6YD, UK
| | | | | | - Eugenio Ventimiglia
- EAU Young Academic Urologists (YAU) Urolithiasis and Endourology Working Group Arnhem, NL-6803, Arnhem, The Netherlands
- Division of Experimental Oncology, Unit of Urology, URI, IRCCS Ospedale San Raffaele, Via Olgettina 60, 20132, Milan, Italy
- School of Medicine, Vita-Salute San Raffaele University, 20132, Milan, Italy
| | - Francesco Esperto
- EAU Young Academic Urologists (YAU) Urolithiasis and Endourology Working Group Arnhem, NL-6803, Arnhem, The Netherlands
- Department of Urology, Campus Biomedico University of Rome, 00128, Rome, Italy
| | - Tarik Emre Sener
- EAU Young Academic Urologists (YAU) Urolithiasis and Endourology Working Group Arnhem, NL-6803, Arnhem, The Netherlands
- Department of Urology, Marmara University School of Medicine, 34854, Istanbul, Turkey
| | - Vincent De Coninck
- EAU Young Academic Urologists (YAU) Urolithiasis and Endourology Working Group Arnhem, NL-6803, Arnhem, The Netherlands
- Department of Urology, AZ Klina, 2930, Brasschaat, Belgium
| | - Esteban Emiliani
- EAU Young Academic Urologists (YAU) Urolithiasis and Endourology Working Group Arnhem, NL-6803, Arnhem, The Netherlands
- Department of Urology, Fundacio Puigvert, Autonomous University of Barcelona, 08193, Barcelona, Spain
| | - B M Zeeshan Hameed
- EAU Young Academic Urologists (YAU) Urolithiasis and Endourology Working Group Arnhem, NL-6803, Arnhem, The Netherlands
- Department of Urology, Father Muller Medical College, Mangalore, Karnataka, 575002, India
| | - Michele Talso
- EAU Young Academic Urologists (YAU) Urolithiasis and Endourology Working Group Arnhem, NL-6803, Arnhem, The Netherlands
- Department of Urology, ASST Fatebenefratelli Sacco, Luigi Sacco University Hospital, Via Giovanni Battista Grassi, 74, 20157, Milan, Italy
| | - Ioannis Mykoniatis
- EAU Young Academic Urologists (YAU) Urolithiasis and Endourology Working Group Arnhem, NL-6803, Arnhem, The Netherlands
- Department of Urology, Aristotle University of Thessaloniki, 541 24, Thessaloniki, Greece
| | - Lazaros Tzelves
- EAU Young Academic Urologists (YAU) Urolithiasis and Endourology Working Group Arnhem, NL-6803, Arnhem, The Netherlands
- Institute of Urology, University College Hospital London, London, NW1 2BU, UK
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Maxwell AD, Kim GW, Furrow E, Lulich JP, Torre M, MacConaghy B, Lynch E, Leotta DF, Wang YN, Borofsky MS, Bailey MR. Development of a burst wave lithotripsy system for noninvasive fragmentation of ureteroliths in pet cats. BMC Vet Res 2023; 19:141. [PMID: 37660015 PMCID: PMC10474658 DOI: 10.1186/s12917-023-03705-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Accepted: 08/24/2023] [Indexed: 09/04/2023] Open
Abstract
BACKGROUND Upper urinary tract stones are increasingly prevalent in pet cats and are difficult to manage. Surgical procedures to address obstructing ureteroliths have short- and long-term complications, and medical therapies (e.g., fluid diuresis and smooth muscle relaxants) are infrequently effective. Burst wave lithotripsy is a non-invasive, ultrasound-guided, handheld focused ultrasound technology to disintegrate urinary stones, which is now undergoing human clinical trials in awake unanesthetized subjects. RESULTS In this study, we designed and performed in vitro testing of a modified burst wave lithotripsy system to noninvasively fragment stones in cats. The design accounted for differences in anatomic scale, acoustic window, skin-to-stone depth, and stone size. Prototypes were fabricated and tested in a benchtop model using 35 natural calcium oxalate monohydrate stones from cats. In an initial experiment, burst wave lithotripsy was performed using peak ultrasound pressures of 7.3 (n = 10), 8.0 (n = 5), or 8.9 MPa (n = 10) for up to 30 min. Fourteen of 25 stones fragmented to < 1 mm within the 30 min. In a second experiment, burst wave lithotripsy was performed using a second transducer and peak ultrasound pressure of 8.0 MPa (n = 10) for up to 50 min. In the second experiment, 9 of 10 stones fragmented to < 1 mm within the 50 min. Across both experiments, an average of 73-97% of stone mass could be reduced to fragments < 1 mm. A third experiment found negligible injury with in vivo exposure of kidneys and ureters in a porcine animal model. CONCLUSIONS These data support further evaluation of burst wave lithotripsy as a noninvasive intervention for obstructing ureteroliths in cats.
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Affiliation(s)
- Adam D Maxwell
- Department of Urology, University of Washington School of Medicine, Seattle, WA, USA
- Center for Industrial and Medical Ultrasound, Applied Physics Laboratory, University of Washington, Seattle, WA, USA
| | - Ga Won Kim
- Center for Industrial and Medical Ultrasound, Applied Physics Laboratory, University of Washington, Seattle, WA, USA
| | - Eva Furrow
- Department of Veterinary Clinical Sciences, University of Minnesota, St. Paul, MN, USA
| | - Jody P Lulich
- Department of Veterinary Clinical Sciences, University of Minnesota, St. Paul, MN, USA
| | - Marissa Torre
- Department of Veterinary Clinical Sciences, University of Minnesota, St. Paul, MN, USA
| | - Brian MacConaghy
- Center for Industrial and Medical Ultrasound, Applied Physics Laboratory, University of Washington, Seattle, WA, USA
| | - Elizabeth Lynch
- Center for Industrial and Medical Ultrasound, Applied Physics Laboratory, University of Washington, Seattle, WA, USA
| | - Daniel F Leotta
- Center for Industrial and Medical Ultrasound, Applied Physics Laboratory, University of Washington, Seattle, WA, USA
| | - Yak-Nam Wang
- Center for Industrial and Medical Ultrasound, Applied Physics Laboratory, University of Washington, Seattle, WA, USA
| | | | - Michael R Bailey
- Department of Urology, University of Washington School of Medicine, Seattle, WA, USA.
- Center for Industrial and Medical Ultrasound, Applied Physics Laboratory, University of Washington, Seattle, WA, USA.
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Ventimiglia E, Quadrini F, Pauchard F, Villa L, Candela L, Proietti S, Giusti G, Pietropaolo A, Somani BK, Goumas IK, Salonia A, Doizi S, Traxer O. Pattern of key opinion leaders talks at major international urological meetings reflects the main differences in flexible ureteroscopy and PCNL diffusion. World J Urol 2023; 41:229-233. [PMID: 36445371 DOI: 10.1007/s00345-022-04209-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Accepted: 11/01/2022] [Indexed: 12/03/2022] Open
Abstract
OBJECTIVE To analyze the pattern of speaker activity related to both flexible ureteroscopy (fURS) and percutaneous nephrolithotomy (PCNL) during plenary sessions at the main (endo)urological international meetings over the last 10 years. METHODS We reviewed the meeting programs of the main endourological international meetings (EAU, AUA, WCE, and SIU) during 2011-2019. We detected all invited speakers at plenary sessions regarding fURS or PCNL. The proportion of fURS and PCNL talks was evaluated yearly during the study period. In order to analyze plenary session speaker composition, we estimated and compared the mean number of talks per speaker according to surgical technique. We also analyzed possible differences in age distribution according to the topic of the talk as well as the presence of young (i.e., < 45 years) speakers. Data were analyzed using descriptive statistics. RESULTS During the last 10 years, a total of 498 plenary talks were found. Of those, 260 (52.2%), 211 (42.4%), and 27 (5.4%) discussed PCNL, fURS, or both, respectively. PCNL was more frequently discussed at the beginning and the end of the study period. Mean [SD] number of talks per speaker was higher for PCNL (2.9 [3.4] vs 1.6 [1.4], p < 0.001), meaning that a wider variety of speakers was invited to give fURS talks. Speakers discussing fURS were younger (median [interquartile range, IQR] age 48 [44-56] vs 52 [47-60] years, p < 0.001), and a higher proportion of young speakers was observed in the fURS group (26% vs 15% p < 0.001). PCNL speakers were more commonly discussing fURS than fURS speakers discussing PCNL (23% vs 17%, p = 0.43). CONCLUSIONS We found a wider variety of speakers at fURS plenary sessions as compared to PCNL ones. It is easier and quicker to become an internationally recognized expert in the field of fURS rather than PCNL. PCNL speakers were able to master fURS more frequently than the other way around.
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Affiliation(s)
- Eugenio Ventimiglia
- Groupe de Recherche Clinique sur la Lithiase Urinaire, Hôpital Tenon, Sorbonne Université, GRC n°20, 75020, Paris, France
- Service d'Urologie, Assistance-Publique Hôpitaux de Paris, Hôpital Tenon, Sorbonne Université, 4 rue de la Chine, 75020, Paris, France
- Division of Experimental Oncology/Unit of Urology, URI-Urological Research Institute, IRCCS Ospedale San Raffaele, 20132, Milan, Italy
| | - Francesca Quadrini
- Department of Urology, Ausl Bologna-Ospedale Maggiore Carlo Alberto Pizzardi, Bologna, Italy
| | - Felipe Pauchard
- Department of Urology, Hospital Carlos Van Buren, Valparaiso, Chile
| | - Luca Villa
- Division of Experimental Oncology/Unit of Urology, URI-Urological Research Institute, IRCCS Ospedale San Raffaele, 20132, Milan, Italy
| | - Luigi Candela
- Service d'Urologie, Assistance-Publique Hôpitaux de Paris, Hôpital Tenon, Sorbonne Université, 4 rue de la Chine, 75020, Paris, France
- Division of Experimental Oncology/Unit of Urology, URI-Urological Research Institute, IRCCS Ospedale San Raffaele, 20132, Milan, Italy
- Vita-Salute San Raffaele University, 20132, Milan, Italy
| | - Silvia Proietti
- Department of Urology, European Training Center in Endourology, IRCCS San Raffaele Hospital, Milan, Italy
| | - Guido Giusti
- Department of Urology, European Training Center in Endourology, IRCCS San Raffaele Hospital, Milan, Italy
| | - Amelia Pietropaolo
- Department of Urology, University Hospital Southampton NHS Trust, Southampton, UK
| | - Bhaskar K Somani
- Department of Urology, University Hospital Southampton NHS Trust, Southampton, UK
| | | | - Andrea Salonia
- Division of Experimental Oncology/Unit of Urology, URI-Urological Research Institute, IRCCS Ospedale San Raffaele, 20132, Milan, Italy
- Vita-Salute San Raffaele University, 20132, Milan, Italy
| | - Steeve Doizi
- Groupe de Recherche Clinique sur la Lithiase Urinaire, Hôpital Tenon, Sorbonne Université, GRC n°20, 75020, Paris, France
- Service d'Urologie, Assistance-Publique Hôpitaux de Paris, Hôpital Tenon, Sorbonne Université, 4 rue de la Chine, 75020, Paris, France
| | - Olivier Traxer
- Groupe de Recherche Clinique sur la Lithiase Urinaire, Hôpital Tenon, Sorbonne Université, GRC n°20, 75020, Paris, France.
- Service d'Urologie, Assistance-Publique Hôpitaux de Paris, Hôpital Tenon, Sorbonne Université, 4 rue de la Chine, 75020, Paris, France.
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Tsaturyan A, Liatsikos E, Faitatziadis S, Kallidonis P. Electromagnetic-guided puncture: a tool or a tale? Curr Opin Urol 2022; 32:393-396. [PMID: 35749785 DOI: 10.1097/mou.0000000000001005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
PURPOSE OF REVIEW The puncture technique and site of the puncture can impact the clinical outcome and the development of postoperative adverse events following percutaneous nephrolithotomy (PCNL). The aim of the current review was to discuss the available puncture guidance approaches and outline the potential role of the recently introduced electromagnetic-guided method. RECENT FINDINGS The puncture and PCNL tract establishment is usually performed using fluoroscopic or ultrasound guidance or a combination of two approaches. Electromagnetic-guided puncture is one of the most recent advancements of technology. The puncture navigation to the renal collecting system is available after placing a special wire with an electromagnetic tracking sensor into the desired calyx through the flexible ureterorenoscope. The available experimental and clinical studies have shown a high first puncture rate, decreased median time for obtaining a puncture, and shorter learning curves for beginners. SUMMARY Fluoroscopic and ultrasound guidance are the main approaches used by urologists. However, these modalities require a steep learning curve, approximately 60 cases for reaching competency. The initial data on electromagnetic navigation have shown the feasibility and potential promising outcomes of this novel approach. New studies are required to investigate its potential implementation opportunities in the daily practice of urologists.
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Affiliation(s)
| | - Evangelos Liatsikos
- Department of Urology, University of Patras, Patras, Greece
- Department of Urology, Medical University of Vienna, Vienna, Austria
- Institute for Urology and Reproductive Health, Sechenov University, Moscow, Russia
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7
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Worldwide practice patterns of percutaneous nephrolithotomy. World J Urol 2022; 40:2091-2098. [PMID: 35776174 DOI: 10.1007/s00345-022-04067-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2022] [Accepted: 06/01/2022] [Indexed: 10/17/2022] Open
Abstract
PURPOSE To evaluate the current practice of percutaneous nephrolithotomy (PCNL), conducting a worldwide survey among urologists with a special interest in endo-urology. METHODS A 22-question survey was specifically developed by the European Association of Urology (EAU) young academic urologists (YAU) and uro-technology (ESUT) groups and globally distributed via SurveyMonkey to almost 2000 members of Endourology Society. The questionnaire included questions dedicated to the demographics and general practice of the participating urologists. RESULTS In total, 441 responses (male/female ratio - 418/23) were received. A comparatively higher percentage of specialists (56.2%) practiced in academic institutions and had specific endo-urological fellowship training (56.7%). The classical prone PCNL remained the most practiced approach among the surveyed specialists, 47.7% stated to always do prone PCNLs, while 51.8% of respondents used multiple positioning options as required. The PCNL tract was mostly performed by urologists (84.3%) and fluoroscopic guidance was still predominantly used by 74.5% of respondents. The most practiced tract dilation method was balloon dilator used by 42% of respondents. Most of the surveyed urologists had ultrasonic, pneumatic or laser lithotripsy devices in their armamentarium. The use of some form of post-procedural drainage was reported in 85.1% of respondents, whereas tubeless PCNL remained a fairly uncommon practice. CONCLUSION The majority of urologists still use prone positioning, get their own access under fluoroscopy guidance and use a balloon for tract dilation. However, we also identified that when necessary, urologists will deviate from routine practice and change strategy, adopting other approaches for PCNL.
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8
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Do MT, Ly TH, Choi MJ, Cho SY. Clinical application of the therapeutic ultrasound in urologic disease: Part II of the therapeutic ultrasound in urology. Investig Clin Urol 2022; 63:394-406. [PMID: 35670002 PMCID: PMC9262482 DOI: 10.4111/icu.20220060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Revised: 03/14/2022] [Accepted: 03/17/2022] [Indexed: 11/18/2022] Open
Abstract
This article aimed to review the clinical application and evidence of the therapeutic ultrasound in detail for urological diseases such as prostate cancer, kidney tumor, erectile dysfunction, and urolithiasis. We searched for articles about high-intensity focused ultrasound (HIFU), extracorporeal shock wave therapy, ultrasound lithotripsy, and extracorporeal shockwave lithotripsy (ESWL) in the MEDLINE and Embase. HIFU may be indicated as a primary treatment for low- or intermediate-risk prostate cancer, and salvage therapy for local recurrence as a promising way to address the limitations of current standard therapies. The application of HIFU in treating kidney tumors has scarcely been reported with unsatisfactory results. Evidence indicates that low-intensity shockwave therapy improves subjective and objective erectile function in patients with erectile dysfunction. Regarding the application of ultrasound in stone management, the novel combination of ultrasound lithotripsy and other energy sources in a single probe promises to be a game-changer in efficiently disintegrating large kidney stones in percutaneous nephrolithotomy. ESWL is losing its role in managing upper urinary tract calculi worldwide. The burst-wave lithotripsy and ultrasound propulsion could be the new hope to regain its position in the lithotripsy field. According to our investigations and reviews, cavitation bubbles of the therapeutic ultrasound are actively being used in the field of urology. Although clinical evidence has been accumulated in urological diseases such as prostate cancer, kidney tumor, erectile dysfunction, and lithotripsy, further development is needed to be a game-changer in treating these diseases.
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Affiliation(s)
- Minh-Tung Do
- Department of Surgery, Hai Phong University of Medicine and Pharmacy, Hai Phong, Viet Nam
- Department of Urology, Seoul National University College of Medicine, Seoul, Korea
| | - Tam Hoai Ly
- Department of Urology, Cho Ray Hospital, Ho Chi Minh City, Viet Nam
| | - Min Joo Choi
- Department of Medicine, Jeju National University College of Medicine, Jeju, Korea
| | - Sung Yong Cho
- Department of Urology, Seoul National University College of Medicine, Seoul, Korea
- Department of Urology, Seoul National University Hospital, Seoul, Korea
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9
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Lazarus J, Asselin M, Kaestner L. Optically tracked needle for ultrasound guided percutaneous nephrolithotomy (PCNL) puncture: A preliminary report. J Endourol 2021; 35:1733-1737. [PMID: 34114486 DOI: 10.1089/end.2021.0136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Introduction Precise needle puncture of the renal collecting system is an essential step for successful percutaneous nephrolithotomy (PCNL). The use of ultrasound for puncture is receiving increased attention. Ultrasound has recognised limitations related to poor visualisation of the needle tip. We aimed to assess if an affordable open source computerized needle navigation training system, using optically tracked ultrasonography, could improve performance of simulated PCNL puncture by urological trainees, compared to conventional free hand manual sonographic puncture. Methods This study describes a PCNL navigation system which can be recreated with any standard ultrasound machine using relatively inexpensive components. The system allows the needle tip to be precisely appreciated in the ultrasound image, its trajectory planned, and the appreciation of needle tip to target calyx proximity aided by sound. Eight urology trainees participated in assessment of the PCNL training model. Alternating freehand (control) and tracked needle (experimental) punctures were performed on a phantom kidney. Total procedure and the number of reinsertions required were recorded. Results The mean time for freehand puncture was 89 seconds (range 13 - 173), while that of the optically tracked needle was 36 seconds (range 12 - 72). Thus, puncture time was significantly reduced by an average of 53 seconds (p=0.045) in the experimental arm. The mean number of needle reinsertions was 3,3 with freehand compared to 1,3 in the optically tracked puncture (p = 0.005). The mean square root error (MSRE) of the system was 1,8 mm. Conclusion This study demonstrates that affordable hardware and open source software can be used to construct an optically tracked ultrasound navigation system for PCNL training. Statistically significant reduced puncture time and number of passes required for successful puncture was demonstrated. We feel that computerised needle tracking during PCNL puncture deserves further evaluation in a training, and potentially, a clinical setting.
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Affiliation(s)
- John Lazarus
- University of Cape Town, Division of Urology, Groote Schuur Hospital, University of Cape Town, Cape Town, South Africa, 8001;
| | - Mark Asselin
- Queen's University Faculty of Health Sciences, 12363, Laboratory for Percutaneous Surgery, Goodwin Hall Room 557, 25 Union St, Kingston, Ontario, Canada, K7L 2N8;
| | - Lisa Kaestner
- University of Cape Town (UCT), Urology, Cape Town, South Africa;
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10
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Berrettini A, Sampogna G, Zanetti SP, Gallioli A, Gnech M, De Marco EA, Minoli DG, Longo F, Manzoni G, Montanari E. Semi-closed-circuit vacuum-assisted MiniPCNL system in pediatric patients. J Pediatr Urol 2021; 17:275-276. [PMID: 33640274 DOI: 10.1016/j.jpurol.2021.02.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Accepted: 02/03/2021] [Indexed: 10/22/2022]
Abstract
Surgical treatment of kidney stones has changed over the years. The use of Mini Percutaneous Nephrolithotomy (MiniPCNL) instrumentation is associated with a reduction of major complications but it lengthens the operative time (OT). This limit may be overcome by a semi-closed-circuit vacuum-assisted MiniPCNL system, characterized by a continuous inflow and a suction-controlled outflow. We present our initial experience in pediatric patients who underwent PCNL using a 12 Fr nephroscope and a 16-Fr-large nephrostomy sheath, equipped with a lateral arm connected to suction. We used Holmium laser lithotripsy and performed lapaxy by drawing back slowly the nephroscope inside the sheath until the opening of the lateral aspiration arm, without using other devices. The stone-free rate (SFR) was assessed at 4 weeks. We included 12 procedures in 8 patients with a median age of 119 months and a median weight of 27 Kg. The median OT was 108 min and the SFR was 80%. No intra-operative complications occurred, while minor post-operative complications occurred after 4/12 procedures. These preliminary data in pediatric population showed the employed system is a safe and effective approach to treat complex kidney stones with a satisfactory SFR and a low OT.
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Affiliation(s)
- Alfredo Berrettini
- Pediatric Urology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.
| | - Gianluca Sampogna
- Urology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, University of Milan, Milan, Italy
| | - Stefano Paolo Zanetti
- Urology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, University of Milan, Milan, Italy
| | - Andrea Gallioli
- Urology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, University of Milan, Milan, Italy
| | - Michele Gnech
- Pediatric Urology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy; Department of Medicine, Surgery and Health Science, PhD School of Science of Reproduction and Development, University of Trieste, Trieste, Italy
| | - Erika Adalgisa De Marco
- Pediatric Urology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Dario Guido Minoli
- Pediatric Urology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Fabrizio Longo
- Urology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, University of Milan, Milan, Italy
| | - Gianantonio Manzoni
- Pediatric Urology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Emanuele Montanari
- Urology Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, University of Milan, Milan, Italy
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11
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Minimally invasive percutaneous nephrolithotomy with SuperPulsed Thulium-fiber laser. Urolithiasis 2021; 49:485-491. [PMID: 33655346 DOI: 10.1007/s00240-021-01258-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Accepted: 02/18/2021] [Indexed: 12/19/2022]
Abstract
We aimed to assess the efficacy and safety of minimally invasive percutaneous nephrolithotomy (PCNL) with SuperPulsed Thulium-fiber laser (SP TFL) using different frequency settings. 125 patients with solitary kidney calculi of up to 55 mm in the maximum diameter underwent mini-PCNL with the SP TFL. Stone-free rate, laser-on time, ablation efficacy, energy consumption, ablation speed and complications were all analyzed. Negative low-dose computed tomography scan or asymptomatic patients with stone fragments < 2 mm were the criteria for assessing the stone-free status. In 36 patients (28.8%) low frequency regimens were used (LF: 3-19 Hz-0.5-6 J), in 75 patients (60%) high frequency regimens were chosen (HF: 20-49 Hz-0.2-2 J) and in 14 (11.2%) patients higher frequency (HRF: 50-200 Hz-0.1-0.5 J) regimens were preferred. The mean age was 52 ± 1.8 years. Median stone diameter and median stone volume were larger at low frequency regimens compared to high frequency regimens. Ablation efficacy (J/mm3) was lower at low rather than at high frequency regimens. Ablation speed (mm3/sec) was higher at low compared to high frequency regimens. Surgeons reported minimal and absent retropulsion at higher frequency regimens. The best visibility was observed at high frequency regimens. The overall stone free rate (SFR) at 3 months was 85%. The majority of the postoperative complications were classified between Clavien grades I-II. SP TFL is an effective and safe tool for performing mini-PCNL regardless of the laser settings.
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12
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DiBianco JM, Ghani KR. Precision Stone Surgery: Current Status of Miniaturized Percutaneous Nephrolithotomy. Curr Urol Rep 2021; 22:24. [PMID: 33576896 DOI: 10.1007/s11934-021-01042-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/18/2021] [Indexed: 12/12/2022]
Abstract
PURPOSE OF REVIEW Innovations in lasers and surgical technology have led to a renewed interest in the miniaturization of percutaneous nephrolithotomy (PCNL). We review the different approaches and evidence on the efficacy of mini-PCNL. RECENT FINDINGS Mini-PCNL encompasses a range of techniques using tract sizes from 4.8 to 22 F to treat renal stones. The most common device uses irrigation to passively extract stones out of the sheath. Super-mini-PCNL incorporates active suction. Ultra- and micro-techniques reduce the tract to smaller diameters. Laser fragmentation is the main lithotripsy modality. Studies demonstrate an association with reduced complications, hospital stay, and increased tubeless rate. Drawbacks include longer operative times while stone-free rates for larger stones may be sub-optimal. Mini-PCNL has advantages of less trauma and the avoidance of nephrostomy tubes. Ambulatory surgery is feasible in select patients. Advances in laser lithotripsy and active suction have the potential to improve stone clearance and treat larger stones.
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Affiliation(s)
- John M DiBianco
- Department of Urology, University of Michigan, Ann Arbor, MI, USA.
| | - Khurshid R Ghani
- Department of Urology, University of Michigan, Ann Arbor, MI, USA
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13
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[Innovative laser technologies in the treatment of urolithiasis : A change to more gentle methods with increased patient safety]. Urologe A 2020; 60:19-26. [PMID: 33315134 DOI: 10.1007/s00120-020-01409-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/18/2020] [Indexed: 10/22/2022]
Abstract
Management of urolithiasis has undergone fundamental changes with the introduction of extracorporeal shock wave lithotripsy (ESWL) and percutaneous and ureterorenoscopic techniques in the 1980s. Since then, these minimally invasive techniques have been continuously optimized and specific laser techniques for stone disintegration have emerged. Besides the established holmium laser, other types of lasers are also emerging. Especially the thulium fiber laser is the subject of promising research due to its variable adjustment options. In terms of patient safety, both holmium and thulium techniques seem to be similar . While serious direct physical lesions are rare, there is increasing evidence of clinically relevant secondary thermal injury due to increased temperatures in the upper urinary tract during treatment. Our research group has recently demonstrated in both in vitro and in vivo (porcine animal model) experiments that monitoring the fluorescence spectra of calculi allows precise target differentiation between stone, tissue, and endoscope components. Consequently, pulse emissions were only emitted when stone material was detected. We believe that target monitoring will minimize the risk of laser-induced urothelial damage and decrease energy release into the upper urinary tract allowing adequate temperature management.
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14
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Gallioli A, Berrettini A, Sampogna G, Llorens E, Quiróz Y, Gnech M, DE Lorenzis E, Albo G, Palou J, Manzoni G, Bujons A, Montanari E. Semi-closed-circuit vacuum-assisted mini percutaneous nephrolithotomy in the pediatric population: the initial experience of two tertiary referral centers. Minerva Urol Nephrol 2020; 74:93-101. [PMID: 33016029 DOI: 10.23736/s2724-6051.20.03951-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND Percutaneous nephrolithotomy (PCNL) is the gold-standard for complex renal stones treatment in the pediatric population. While the miniaturization of PCNL reduces the risk of bleeding, it can hinder surgical and functional outcomes. The aim of the study was to assess the safety and feasibility of semi-closed-circuit vacuum-assisted Mini-PCNL (vmPCNL) in pediatric patients. METHODS From January 2017 to December 2018, we prospectively collected data on consecutive vmPCNLs from two European tertiary referral centers. The procedure was performed with the ClearPetra® (Well Lead Medical Co., Ltd., Guangzhou, China) access sheath equipped with a lateral arm connected to the aspiration system (pressure setting ~120-150 cmH<inf>2</inf>O) by a 200 Ml plastic stone collector. Pre-, intra- and postoperative data and costs were analyzed. The stone-free rate (SFR) was defined as absence of residual fragments >4 mm with either ultrasound or kidney, ureter, and bladder X-ray. RESULTS Eighteen vmPCNLs were performed in 16 renal units of 13 children. The median age was 119 months (IQR: 97-160) and the weight was 29 Kg (IQR: 25-40). The median cumulative stone size was 32 mm (22-46) with 8 (44.4%) cases of staghorn stones. The OT was 128 min (IQR: 99-167). The basketing was unnecessary in 6/18 (33%) cases. Neither intra-operative complications nor blood transfusions occurred. Postoperative fever was observed in 5/18 (27.8%) cases; in one case a double J ureteral stent was placed for concomitant hydronephrosis. The SFR was 81.3% (13/16), rising to 93.8% (15/16) after ancillary procedures. The materials costs of a vmPCNL (734.8 €) were comparable to mini-PCNL using a reusable set (710.7 €). CONCLUSIONS The vmPCNL seems to be sustainable, safe and feasible for kidney stones treatment in the pediatric population.
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Affiliation(s)
- Andrea Gallioli
- Unit of Urology, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy -
| | - Alfredo Berrettini
- Unit of Pediatric Urology, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Gianluca Sampogna
- Unit of Urology, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.,Unit of Pediatric Urology, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Erika Llorens
- Division of Pediatric Urology, Fundaciò Puigvert, Barcelona, Spain
| | - Yesica Quiróz
- Division of Pediatric Urology, Fundaciò Puigvert, Barcelona, Spain
| | - Michele Gnech
- Unit of Pediatric Urology, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Elisa DE Lorenzis
- Unit of Urology, Department of Clinical Sciences and Community Health, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Giancarlo Albo
- Unit of Urology, Department of Clinical Sciences and Community Health, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Joan Palou
- Department of Urology, Fundació Puigvert, Barcelona, Spain
| | - Gianantonio Manzoni
- Unit of Pediatric Urology, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Anna Bujons
- Division of Pediatric Urology, Fundaciò Puigvert, Barcelona, Spain
| | - Emanuele Montanari
- Unit of Urology, Department of Clinical Sciences and Community Health, Foundation IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
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15
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Haberal HB, Dogan HS, Citamak B, Hazir B, Altan M, Bilen CY, Tekgul S. Outcomes of Percutaneous Nephrolithotomy in Preschool Age Group: A Single-Center Study. J Endourol 2020; 34:1001-1007. [DOI: 10.1089/end.2020.0087] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
| | - Hasan Serkan Dogan
- Division of Pediatric Urology, Department of Urology, Hacettepe University School of Medicine, Ankara, Turkey
| | - Burak Citamak
- Department of Urology, Hacettepe University School of Medicine, Ankara, Turkey
| | - Berk Hazir
- Department of Urology, Hacettepe University School of Medicine, Ankara, Turkey
| | - Mesut Altan
- Department of Urology, Hacettepe University School of Medicine, Ankara, Turkey
| | - Cenk Yucel Bilen
- Department of Urology, Hacettepe University School of Medicine, Ankara, Turkey
| | - Serdar Tekgul
- Division of Pediatric Urology, Department of Urology, Hacettepe University School of Medicine, Ankara, Turkey
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Abstract
PURPOSE OF REVIEW To update laser lithotripsy advances in regard to new laser types and technologies as well as review contemporary laser safety concerns. RECENT FINDINGS The high prevalence of urolithiasis and the continuing miniaturization of scopes has encouraged the growth of laser lithotripsy technology. The holmium:yttrium-aluminum-garnet (Ho:YAG) laser has been used for over 20 years in endourology and has been extensively studied. Holmium laser power output is affected by a number of factors, including pulse energy, pulse frequency, and pulse width. Several recent experimental studies suggest that the new dual-phase Moses 'pulse modulation' technology, introduced in high-power laser machines, carries a potential to increase stone ablation efficiency and decrease stone retropulsion. A newly introduced thulium fiber laser (TFL) has been adapted to a very small laser fiber size and is able to generate very low pulse energy and very high pulse frequency. Both of these technologies promise to play a larger role in laser lithotripsy in the near future. However, more experimental and clinical studies are needed to expand on these early experimental findings. Even though laser lithotripsy is considered safe, precautions should be taken to avoid harmful or even catastrophic adverse events to the patient or the operating room staff. SUMMARY The Ho:YAG laser remains the clinical gold standard for laser lithotripsy for over the last two decades. High-power Ho:YAG laser machines with Moses technology have the potential to decrease stone retropulsion and enhance efficiency of laser ablation. The new TFL has a potential to compete with and perhaps even replace the Ho:YAG laser for laser lithotripsy. Safety precautions should be taken into consideration during laser lithotripsy.
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17
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Zhu L, Jiang R, Pei L, Li X, Kong X, Wang X. Risk factors for the fever after percutaneous nephrolithotomy: a retrospective analysis. Transl Androl Urol 2020; 9:1262-1269. [PMID: 32676409 PMCID: PMC7354332 DOI: 10.21037/tau.2020.03.37] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
Background It’s very common to see the onset of fever after percutaneous nephrolithotomy (PCNL), it’s necessary to analyze the risk factors for the fever following PCNL, and to provide evidence for infection prevention after PCNL. Methods A total of 546 adult PCNL patients were included as study subjects and retrospective studies were performed. We collected clinical data of patients using a prospectively designed database. Univariate and multivariate logistic regression analyses were performed to identify the potential risk factors for the fever after PCNL. Results Of the included 546 PCNL patients, there were 82 fever patients and 464 no-fever patients following PCNL. Escherichia coli and Proteus mirabilis are the two most common infectious bacteria. Preoperative urinary tract infection (OR =4.38, 95% CI: 1.15–9.53), multiple access (OR =5.31, 95% CI: 1.23–10.75), diabetes (OR =4.97, 95% CI: 1.37–9.86), length of operation ≥60 min (OR =5.67, 95% CI: 2.24–13.42), estimated blood loss in PCNL ≥500 mL (OR=2.78, 95% CI: 2.32–3.61) were the independent risk factors associated with postoperative infection. Conclusions Effective control of urinary tract infection, reduction of access number, strict control of blood glucose, length of operation control, reduction of intraoperative bleeding should be considered as measures to prevent postoperative fever for patients with PCNL.
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Affiliation(s)
- Likun Zhu
- Department of Urology Surgery, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, China.,Nephropathy Clinical Medical Research Center of Sichuan Province, Luzhou 646000, China
| | - Rui Jiang
- Department of Urology Surgery, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, China.,Nephropathy Clinical Medical Research Center of Sichuan Province, Luzhou 646000, China
| | - Lijun Pei
- Department of Urology Surgery, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, China.,Nephropathy Clinical Medical Research Center of Sichuan Province, Luzhou 646000, China
| | - Xu Li
- Department of Urology Surgery, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, China.,Nephropathy Clinical Medical Research Center of Sichuan Province, Luzhou 646000, China
| | - Xiangjun Kong
- Department of Urology Surgery, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, China.,Nephropathy Clinical Medical Research Center of Sichuan Province, Luzhou 646000, China
| | - Xinwei Wang
- Department of Urology Surgery, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, China.,Nephropathy Clinical Medical Research Center of Sichuan Province, Luzhou 646000, China
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Noureldin YA, Farsari E, Ntasiotis P, Adamou C, Vagionis A, Vrettos T, Liatsikos EN, Kallidonis P. Effects of irrigation parameters and access sheath size on the intra-renal temperature during flexible ureteroscopy with a high-power laser. World J Urol 2020; 39:1257-1262. [PMID: 32556675 DOI: 10.1007/s00345-020-03287-9] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Accepted: 05/28/2020] [Indexed: 01/03/2023] Open
Abstract
OBJECTIVES To investigate the effect of different laser power settings on intra-renal temperature (IRT) under different irrigation conditions during flexible ureteroscopy (FURS) in a live-anesthetized porcine model. METHODS Following ethics approval, 2 female pigs weighing ~ 28 kg were used. Under general anesthesia, a percutaneous access was obtained to fix a K-type thermocouple inside the pelvi-calyceal system for real-time recording of IRT during FURS without UAS, UAS-10/12, UAS-12/14, and UAS-14/16F. A high-power holmium laser was used and the IRT was recorded during laser activation for up to 60 s at a laser power of 20 W, 40 W, and 60 W under gravity irrigation and manual pump irrigation. RESULTS Under gravity irrigation, FURS without UAS was associated with hazardous IRT at a laser power as low as 20 W for as short as 20 s of laser activation. The IRT was rendered borderline when UAS was used. This UAS buffering effect disappeared with the use of higher laser-power settings (40 W and 60 W) with the maximal IRT exceeding 60 °C. Moreover, laser activation at 60 W was associated with very rapid increase in IRT within few seconds. Under pump irrigation, laser activation at the highest power setting (60 W) for 60 s was associated with a safe IRT, even without the use of UAS. The maximal IRT was below 45 °C. CONCLUSION The use of high-power Ho:YAG laser carries potentially harmful thermal effect when used under gravity irrigation, even when large-diameter UAS is used. High-power settings (> 40 W) require high irrigation flow. The use of UAS is advisable to reduce the IRT and balance any intra-renal pressure increase.
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Affiliation(s)
- Yasser A Noureldin
- Department of Urology, University of Patras, Patras, Greece.,Department of Urology, Benha Faculty of Medicine, Benha University, Benha, Egypt
| | - Ergina Farsari
- Department of Chemical Engineering, University of Patras, Patras, Greece
| | | | | | | | - Theofanis Vrettos
- Department of Anesthesiology and ICU, University of Patras, Patras, Greece
| | - Evangelos N Liatsikos
- Department of Urology, University of Patras, Patras, Greece. .,Department of Urology, Medical University of Vienna, Vienna, Austria.
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Yang SY, Jung HD, Kwon SH, Lee EK, Lee JY, Lee SH. Does Early Retrograde Intrarenal Surgery Improve the Cost-Effectiveness of Renal Stone Management? Yonsei Med J 2020; 61:515-523. [PMID: 32469175 PMCID: PMC7256000 DOI: 10.3349/ymj.2020.61.6.515] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 03/20/2020] [Accepted: 04/16/2020] [Indexed: 12/23/2022] Open
Abstract
PURPOSE This study aimed to evaluate the cost-effectiveness of treatment with retrograde intrarenal surgery (RIRS) versus repeated shock wave lithotripsy (SWL) in patients with renal calculi. MATERIALS AND METHODS The non-retreatment rates (NRRs) and their respective real-world costs for RIRS and SWL were derived through retrospective analysis of health insurance claims data from 2015 to 2017. Decision tree modeling was performed to demonstrate the cost-effectiveness of RIRS. Furthermore, sensitivity analysis was performed to examine the robustness of the results. RESULTS Analysis of the obtained data showed that NRRs of single SWL ranged from 46% to 56%, whereas NRRs of single RIRS ranged from 75% to 93%. Introducing RIRS early in the treatment sequence was observed to be favorable for the reduction of overall failure (overall NRR, 0.997) compared to the results of repeated SWL (overall NRR, 0.928). The implementation of decision tree modeling revealed that the cost per retreatment-avoided increased with the introduction of RIRS at an earlier time (first line, second line, third line, fourth line: 18640 USD, 10376 USD, 4294 USD, 3377 USD, respectively). Probabilistic modeling also indicated that the introduction of RIRS as the first line of treatment was least likely to be cost-effective, when compared to other options of introducing RIRS as the second, third, or fourth line of treatment. CONCLUSION Performing RIRS as early as possible can be recommended for eligible patients to reduce the overall failure, even if it is not as cost-effective as performing RIRS later.
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Affiliation(s)
- So Young Yang
- School of Pharmacy, Sungkyunkwan University, Suwon, Korea
| | - Hae Do Jung
- Department of Urology, Wonkwang University Sanbon Hospital, Wonkwang University College of Medicine, Gunpo, Korea
| | - Sun Hong Kwon
- School of Pharmacy, Sungkyunkwan University, Suwon, Korea
| | - Eui Kyung Lee
- School of Pharmacy, Sungkyunkwan University, Suwon, Korea
| | - Joo Yong Lee
- Department of Urology, Severance Hospital, Urological Science Institute, Yonsei University College of Medicine, Seoul, Korea
| | - Seon Heui Lee
- Department of Nursing Science, College of Nursing, Gachon University, Incheon, Korea.
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20
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Klein I, Gutiérrez-Aceves J. Preoperative imaging in staghorn calculi, planning and decision making in management of staghorn calculi. Asian J Urol 2020; 7:87-93. [PMID: 32257800 PMCID: PMC7096669 DOI: 10.1016/j.ajur.2019.07.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Revised: 04/25/2019] [Accepted: 05/20/2019] [Indexed: 11/19/2022] Open
Abstract
Objective Staghorn calculi present a particular and challenging entity of stone morphology. Treatment is associated with lower stone-free rates and higher complication rates compared to non-staghorn stones. In this review we looked for the most relevant data on preoperative imaging and access planning to help decision making for percutaneous surgery with this complex condition. Methods We conducted a PubMed search of publications in the past 2 decades that include relevant information on the planning for management of staghorn stones. Non-contrast computerized tomography (NCCT) is indeed the standard imaging tool for percutaneous nephrolithotomy (PCNL); additional tools such as three-dimensional computed tomography (CT) reconstruction of the staghorn calculus may help plan access in complex cases. Ultrasound guided percutaneous access may be considered for staghorn stones when planning upper pole access in kidney malposition or complex intrarenal anatomy or with complex body habitus. Wideband doppler ultrasound and real-time virtual sonography can assist. New technologies to improve kidney access such as Uro Dyna-CT or electromagnetic sensor have been reported, but have not shown utilization in staghorn cases. Staghorn morphometry-based prediction algorithms may predict the number of tract(s) and stage(s) for PCNL monotherapy. Lower pole access can be equally effective as upper pole when planning for staghorn and complex stones, with significantly less complications rate; Stone-Tract length-Obstruction-Number of involved calyces-Essence of stone density (STONE) nephrolithometry seems to be the best system to predict outcomes of PCNL in staghorn cases. There is a growing trend of endoscopic combined intrarenal surgery (ECIRS) in concordance with PCNL to treat larger stones. Conservative management of staghorn calculi is an undesired option, but can be an alternative for a carefully selected group of high-risk patients. Conclusion Staghorn stones may lead to deterioration of renal function and life-threatening urosepsis. This entity should be managed aggressively with planning ahead for surgery using the different tools available as the cornerstone for a successful outcome.
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Abstract
PURPOSE OF REVIEW To provide a summary of surgical outcomes in percutaneous nephrolithotomy (PCNL) according to various techniques and tract sizes. RECENT FINDINGS Recent literature in this field concluded that standard PCNL (sPCNL) remains the optimal treatment for stones between 1 and 2.5 cm and can be managed with tracts 14-20 F, whereas small stones less than 1.5 cm can be treated with tracts under 14 F. According to new datasets, smaller tracts can be equally effective in the treatment and might offer the possibility to reduce bleeding, length of hospital stay, postoperative pain as well as overall complication rates when compared with sPCNL. On the other hand, longer operative time as well as lower stone-free rates, which have been the main drawbacks of the miniaturized approach, have recently shown to be comparable with sPCNL. SUMMARY At present, tract size is a highly debatable topic in percutaneous stone therapy. New systems for miniaturized PCNL have been developed to achieve comparable stone-free rates while reducing the incidence of common complications. The adoption of these techniques demands skilled surgeons and institutional investment for the acquisition of new equipment.
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22
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Extracorporeal shock-wave lithotripsy: is it still valid in the era of robotic endourology? Can it be more efficient? Curr Opin Urol 2020; 30:120-129. [PMID: 31990816 DOI: 10.1097/mou.0000000000000732] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
PURPOSE OF REVIEW The aim of the article is to evaluate the actual role of extracorporeal shock-wave lithotripsy (ESWL) in the management of urolithiasis based on the new developments of flexible ureterorenoscopy (FURS) and percutaneous nephrolithotomy (PCNL). RECENT FINDINGS In Western Europe, there is a significant change of techniques used for treatment of renal stones with an increase of FURS and a decrease of ESWL. The reasons for this include the change of indications, technical improvement of the endourologic armamentarium, including robotic assistance. Mostly relevant is the introduction of digital reusable and single-use flexible ureterorenoscopes, whereas micro-PCNL has been abandoned. Some companies have stopped production of lithotripters and novel ideas to improve the efficacy of shock waves have not been implemented in the actual systems. Promising shock-wave technologies include the use of burst-shock-wave lithotripsy (SWL) or high-frequent ESWL. The main advantage would be the very fast pulverization of the stone as shown in in-vitro models. SUMMARY The role of ESWL in the management of urolithiasis is decreasing, whereas FURS is constantly progressing. Quality and safety of intracorporeal shock-wave lithotripsy using holmium:YAG-laser under endoscopic control clearly outweighs the advantages of noninvasive ESWL. To regain ground, new technologies like burst-SWL or high-frequent ESWL have to be implemented in new systems.
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Zhou M, He X, Zhang Y, Yu W. Optical puncture combined with balloon dilation PCNL vs. conventional puncture dilation PCNL for kidney stones without hydronephrosis: a retrospective study. BMC Urol 2019; 19:122. [PMID: 31775711 PMCID: PMC6882241 DOI: 10.1186/s12894-019-0558-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Accepted: 11/13/2019] [Indexed: 11/29/2022] Open
Abstract
Background Accurate puncture and dilation of the target kidney calices for percutaneous nephrolithotomy (PCNL) can be difficult. This study aimed to investigate the advantages of PCNL using optical puncture (i.e. the puncture is visualized on a screen as seen through the needle) combined with balloon dilation vs. conventional puncture methods. Methods This was a retrospective study of 58 consecutive patients with kidney stones without hydronephrosis and treated at the Minimally Invasive Urology Center of Zhejiang Provincial People’s Hospital between 10/2016 and 12/2017. Twenty-one patients underwent optical puncture combined with balloon dilation PCNL. Thirty-seven patients underwent conventional puncture instrument dilation PCNL (controls). Success rate, tubeless rate, blood loss, pain, and complications were compared between the two groups. Results The one-time puncture success rate (95.2% [20/21] vs. 67.6% [25/37], P = 0.02) and the postoperative tubeless rate (81.0% [17/21] vs. 54.1% [20/37], P = 0.04) were higher in the optical puncture group compared with controls. The average postoperative hemoglobin reduction was smaller (1.13 ± 0.63 vs. 1.56 ± 0.59 g/dL, P = 0.01), the postoperative VAS score was lower (1.6 ± 0.9 vs. 2.5 ± 1.2, P = 0.004), the rate of postoperative analgesic use was lower (14.3% [3/21] vs. 40.5% [15/37], P = 0.04), and the postoperative mean hospitalization days was shorter (3.7 ± 0.9 vs. 4.4 ± 0.8, P = 0.005) in the optical puncture group vs. controls. There was no case of urinary sepsis, blood transfusion, perirenal hematoma, pleural injury, and visceral organ damage. Conclusions Optical puncture combined with balloon dilation PCNL could be associated with good therapeutic effect and low frequency of complications for the treatment of kidney stones without hydronephrosis.
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Affiliation(s)
- Mi Zhou
- Department of Urology, Zhejiang Provincial People's Hospital/People's Hospital of Hangzhou Medical College, Hangzhou, China
| | - Xiang He
- Department of Urology, Zhejiang Provincial People's Hospital/People's Hospital of Hangzhou Medical College, Hangzhou, China
| | - Yuelong Zhang
- Department of Urology, Zhejiang Provincial People's Hospital/People's Hospital of Hangzhou Medical College, Hangzhou, China
| | - Weiwen Yu
- Department of Urology, Zhejiang Provincial People's Hospital/People's Hospital of Hangzhou Medical College, Hangzhou, China.
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Abstract
Infection stones are complex aggregates of crystals amalgamated in an organic matrix that are strictly associated with urinary tract infections. The management of patients who form infection stones is challenging owing to the complexity of the calculi and high recurrence rates. The formation of infection stones is a multifactorial process that can be driven by urine chemistry, the urine microenvironment, the presence of modulator substances in urine, associations with bacteria, and the development of biofilms. Despite decades of investigation, the mechanisms of infection stone formation are still poorly understood. A mechanistic understanding of the formation and growth of infection stones - including the role of organics in the stone matrix, microorganisms, and biofilms in stone formation and their effect on stone characteristics - and the medical implications of these insights might be crucial for the development of improved treatments. Tools and approaches used in various disciplines (for example, engineering, chemistry, mineralogy, and microbiology) can be applied to further understand the microorganism-mineral interactions that lead to infection stone formation. Thus, the use of integrated multidisciplinary approaches is imperative to improve the diagnosis, prevention, and treatment of infection stones.
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Jin L, Yang B, Zhou Z, Li N. Comparative Efficacy on Flexible Ureteroscopy Lithotripsy and Miniaturized Percutaneous Nephrolithotomy for the Treatment of Medium-Sized Lower-Pole Renal Calculi. J Endourol 2019; 33:914-919. [PMID: 31596612 DOI: 10.1089/end.2019.0504] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Affiliation(s)
- Lianchao Jin
- Department of Urology, Peking University Shougang Hospital, Beijing, China
| | - Bing Yang
- Department of Urology, Peking University Shougang Hospital, Beijing, China
| | - Zhe Zhou
- Department of Urology, Peking University Shougang Hospital, Beijing, China
| | - Ningchen Li
- Department of Urology, Peking University Shougang Hospital, Beijing, China
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26
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[Role of pressure and temperature in ureterorenoscopy and percutaneous nephrolitholapaxy : Pressure and temperature changes during stone treatment]. Urologe A 2019; 58:1289-1297. [PMID: 31501985 DOI: 10.1007/s00120-019-01034-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Ureterorenoscopy and percutaneous nephrolitholapaxy are minimally invasive procedures and are the standard procedures for the treatment of kidney stones and ureteral calculi. To achieve an adequate view, in both methods an optimal and sufficient irrigation flow is necessary. The intrarenal pressure is influenced by the irrigation pressure and irrigation volume and has to be controlled. Pathologically elevated intrarenal pressure can lead to irreversible damage of the kidneys. Lasers are frequently used for stone fragmentation. It has been shown in studies that the laser energy can lead to an increase in the temperature and that thermal effects can also damage the kidneys. This article provides the surgeon with an overview about the effects of temperature and pressure changes during ureterorenoscopy and percutaneous nephrolitholapaxy and how damages can be avoided.
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27
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Serrano A, Bravo-Balado A, Díaz AM, Barco-Castillo C, Trujillo CG. How can I get a renal access if I do not have an ultrasound and cannot opacify the collecting system? Another use of the hydrophilic guide wire. Ther Adv Urol 2019; 11:1756287219868603. [PMID: 31452687 PMCID: PMC6698991 DOI: 10.1177/1756287219868603] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Accepted: 07/15/2019] [Indexed: 11/18/2022] Open
Abstract
It is well-known that fluoroscopic guidance is the most commonly used imaging
technique for percutaneous access to the kidney. However, we might encounter
difficulties when attempting to establish the limits of the collecting system
for a percutaneous puncture, especially in places where the use of ultrasound
guidance in the operating room is limited. We aim to describe the use of a
hydrophilic guide wire to delimit the collecting system when this becomes
difficult with conventional techniques.
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Affiliation(s)
- Adolfo Serrano
- Department of Urology, Hospital Universitario Fundación Santa Fe de Bogotá and Universidad de los Andes School of Medicine, Carrera 7 No. 118-09, Unidad Renal, Piso 3, Bogotá D.C., Colombia Clínicas Urológicas de la Fundación Santa Fe de Bogotá, Bogotá D.C., 110111, Colombia
| | - Alejandra Bravo-Balado
- Department de Urology, Hospital Universitario Fundación Santa Fe de Bogotá and Universidad de los Andes School of Medicine, Bogotá D.C., Colombia
| | - Ana María Díaz
- Department of Urology, Hospital Universitario Fundación Santa Fe de Bogotá, Bogotá D.C., Colombia
| | - Catalina Barco-Castillo
- Department de Urology, Hospital Universitario Fundación Santa Fe de Bogotá and Universidad de los Andes School of Medicine, Bogotá D.C., Colombia
| | - Carlos Gustavo Trujillo
- Department de Urology, Hospital Universitario Fundación Santa Fe de Bogotá and Universidad de los Andes School of Medicine, Bogotá D.C., Colombia
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28
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Wang X, Ye Q, Liu X, Chen J, Wang Z, Xu W, Zhao P, Tao B. Comparison of the clinical efficacy of sonography-guided percutaneous nephrolithotomy (PCNL) under local and general anesthesia. J Int Med Res 2019; 47:4143-4150. [PMID: 31291811 PMCID: PMC6753540 DOI: 10.1177/0300060519859767] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Objective This study aimed to compare the effect of percutaneous nephrolithotomy (PCNL)
under local infiltration anesthesia (PCNL-LIA) and general anesthesia
(PCNL-GA) to treat upper urinary tract calculi on clinical application
values. Methods Patients were randomly divided into the PCNL-LIA (16 patients) and PCNL-GA
(20 patients) groups. Data on safety, cost, complications, rate of residual
calculi, and prognosis were compared. Results The mean operation time in the PCNL-LIA group was less than that in PCNL-GA
group (100±7.7 versus 120±9.0 minutes). The mean length of hospital stay in
the PCNL-LIA group was shorter than that in the PCNL-GA group (6.9±0.5
versus 10.5±1.2 days). The rate of patients who required blood transfusion
because of blood loss during or after surgery was less in the PCNL-LIN group
than in the PCNL-GA group (13% versus 40%). The intervention rate in the
PCNL-GA group was higher than that in the PCNL-LIA group. Visual analogue
pain scale assessment showed that the PCNL-LIA group showed slightly more
pain than the PCNL-GA group. Conclusion PCNL-LIA is safer, faster, and more convenient, and it also provides the
benefits of a lower rate of blood loss and complications, lower cost, faster
recovery, and shorter hospital stay compared with PCNL-GA.
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Affiliation(s)
- Xunbao Wang
- Department of Urology, Renmin Hospital, Susong, Anhui Province, China
| | - Qiongxiang Ye
- Department of Urology, Renmin Hospital, Susong, Anhui Province, China
| | - Xinguo Liu
- Department of Urology, Renmin Hospital, Susong, Anhui Province, China
| | - Jinjun Chen
- Department of Urology, Renmin Hospital, Susong, Anhui Province, China
| | - Zhiyong Wang
- Department of Urology, Renmin Hospital, Susong, Anhui Province, China
| | - Wanfeng Xu
- Department of Urology, Renmin Hospital, Susong, Anhui Province, China
| | - Pengfei Zhao
- Department of Urology, Renmin Hospital, Susong, Anhui Province, China
| | - Baozhou Tao
- Department of Urology, Renmin Hospital, Susong, Anhui Province, China
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Sultan S, Aba Umer S, Ahmed B, Naqvi SAA, Rizvi SAH. Update on Surgical Management of Pediatric Urolithiasis. Front Pediatr 2019; 7:252. [PMID: 31334207 PMCID: PMC6616131 DOI: 10.3389/fped.2019.00252] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Accepted: 06/03/2019] [Indexed: 12/15/2022] Open
Abstract
Urolithiasis has always been a fascinating disease, even more so in children. There are many intriguing facets to this pathology. This article is a nonsystematic review to provide an update on the surgical management of pediatric urolithiasis. It highlights the pros and cons of various minimally invasive surgical options such as extracorporeal shockwave lithotripsy (ESWL), retrograde intrarenal surgery (RIRS), percutaneous nephrolithotomy (PCNL), laparoscopy, and robotics. This article also describes the various intracorporeal disintegration technologies available to fragment the stone, including the newer advancements in laser technology. It also emphasizes the cost considerations especially with reference to the emerging economies. Thus, this manuscript guides how to select the least-invasive option for an individual patient, considering age and gender; stone size, location, and composition; and facilities and expertise available.
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Affiliation(s)
- Sajid Sultan
- Philip G. Ransley Department of Paediatric Urology, Sindh Institute of Urology and Transplantation, Karachi, Pakistan
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30
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Sharbaugh A, Morgan Nikonow T, Kunkel G, Semins MJ. Contemporary best practice in the management of staghorn calculi. Ther Adv Urol 2019; 11:1756287219847099. [PMID: 35173810 PMCID: PMC8842174 DOI: 10.1177/1756287219847099] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2018] [Accepted: 04/09/2019] [Indexed: 12/19/2022] Open
Abstract
Staghorn calculi are complex renal stones that occupy the majority of the renal collecting system. These stones are associated with high morbidity and can lead to recurrent urinary tract infections, urosepsis, renal deterioration, and death if left untreated. Managing patients with staghorn calculi can be challenging. Fortunately, advances in technology and endourology techniques have enabled urologists to effectively treat these stones with minimal morbidity to the patient. This article describes the contemporary best practices in the initial evaluation, management, and follow up of patients with staghorn calculi to help the practicing urologist navigate this complex condition.
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Affiliation(s)
- Adam Sharbaugh
- Department of Urology, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Tara Morgan Nikonow
- Department of Urology, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Gregory Kunkel
- Drexel University College of Medicine, Pittsburgh, Pennsylvania, USA
| | - Michelle Jo Semins
- Department of Urology, University of Pittsburgh Medical Center, 1350 Locust Street, Suite G100A Building C, Pittsburgh, PA 15219, USA
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31
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Nguyen DD, Luo JW, Tailly T, Bhojani N. Percutaneous Nephrolithotomy Access: A Systematic Review of Intraoperative Assistive Technologies. J Endourol 2019; 33:358-368. [DOI: 10.1089/end.2019.0085] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Affiliation(s)
| | - Jack W. Luo
- Faculty of Medicine, McGill University, Montreal, Canada
| | - Thomas Tailly
- Urology Department, University Hospital Ghent, Ghent, Belgium
| | - Naeem Bhojani
- Division of Urology, University of Montreal Health Center (CHUM), Montreal, Canada
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32
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Abelson B, Majerus S, Sun D, Gill BC, Versi E, Damaser MS. Ambulatory urodynamic monitoring: state of the art and future directions. Nat Rev Urol 2019; 16:291-301. [PMID: 30936468 PMCID: PMC6946055 DOI: 10.1038/s41585-019-0175-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Urodynamic studies are a key component of the clinical evaluation of lower urinary tract dysfunction and include filling cystometry, pressure-flow studies, uroflowmetry, urethral function tests and electromyography. However, pitfalls of traditional urodynamics include physical and emotional discomfort, artificial test conditions with catheters and rapid retrograde filling of the bladder, which result in variable diagnostic accuracy. Ambulatory urodynamic monitoring (AUM) uses physiological anterograde filling and, therefore, offers a longer and more physiologically relevant evaluation. However, AUM methods rely on traditional catheters and pressure transducers and do not measure volume continuously, which is required to provide context for pressure changes. Novel telemetric AUM (TAUM) methods that use wireless, catheter-free, battery-powered devices to monitor bladder pressure and volume while patients carry out their daily activities are currently being investigated. TAUM devices under current development are innovating in the areas of remote monitoring, rechargeable energy sources, device deployment and retrieval and materials engineering to provide increased diagnostic accuracy and improved comfort for patients with incontinence or voiding dysfunction. These devices hold promise for improving the diagnosis and management of patients with lower urinary tract disorders.
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Affiliation(s)
- Benjamin Abelson
- Cleveland Clinic, Glickman Urological & Kidney Institute, Cleveland, OH, USA
| | - Steve Majerus
- Advanced Platform Technology Center, Louis Stokes Cleveland VA Medical Center, Cleveland, OH, USA
- Cleveland Clinic, Lerner Research Institute, Department of Biomedical Engineering, Cleveland, OH, USA
| | - Daniel Sun
- Cleveland Clinic, Glickman Urological & Kidney Institute, Cleveland, OH, USA
| | - Bradley C Gill
- Cleveland Clinic, Glickman Urological & Kidney Institute, Cleveland, OH, USA
| | - Eboo Versi
- Department of Obstetrics, Gynecology and Reproductive Sciences, Robert Wood Johnson Medical School, Rutgers University, New Brunswick, NJ, USA
| | - Margot S Damaser
- Cleveland Clinic, Glickman Urological & Kidney Institute, Cleveland, OH, USA.
- Advanced Platform Technology Center, Louis Stokes Cleveland VA Medical Center, Cleveland, OH, USA.
- Cleveland Clinic, Lerner Research Institute, Department of Biomedical Engineering, Cleveland, OH, USA.
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33
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May PC, Hsi RS, Tran H, Stoller ML, Chew BH, Chi T, Usawachintachit M, Duty BD, Gore JL, Harper JD. The Morbidity of Ureteral Strictures in Patients with Prior Ureteroscopic Stone Surgery: Multi-Institutional Outcomes. J Endourol 2019; 32:309-314. [PMID: 29325445 DOI: 10.1089/end.2017.0657] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
PURPOSE Nephrolithiasis is an increasingly common ailment in the United States. Ureteroscopic management has supplanted shockwave lithotripsy as the most common treatment of upper tract stone disease. Ureteral stricture is a rare but serious complication of stone disease and its management. The impact of new technologies and more widespread ureteroscopic management on stricture rates is unknown. We describe our experience in managing strictures incurred following ureteroscopy for upper tract stone disease. MATERIALS AND METHODS Records for patients managed at four tertiary care centers between December 2006 and October 2015 with the diagnosis of ureteral stricture following ureteroscopy for upper tract stone disease were retrospectively reviewed. Study outcomes included number and type (endoscopic, reconstructive, or nephrectomy) of procedures required to manage stricture. RESULTS Thirty-eight patients with 40 ureteral strictures following URS for upper tract stone disease were identified. Thirty-five percent of patients had hydronephrosis or known stone impaction at the time of initial URS, and 20% of cases had known ureteral perforation at the time of initial URS. After stricture diagnosis, the mean number of procedures requiring sedation or general anesthesia performed for stricture management was 3.3 ± 1.8 (range 1-10). Eleven strictures (27.5%) were successfully managed with endoscopic techniques alone, 37.5% underwent reconstruction, 10% had a chronic stent/nephrostomy, and 10 (25%) required nephrectomy. CONCLUSIONS The surgical morbidity of ureteral strictures incurred following ureteroscopy for stone disease can be severe, with a low success rate of endoscopic management and a high procedural burden that may lead to nephrectomy. Further studies that assess specific technical risk factors for ureteral stricture following URS are needed.
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Affiliation(s)
- Philip C May
- 1 Department of Urology, University of Washington , Seattle, Washington
| | - Ryan S Hsi
- 1 Department of Urology, University of Washington , Seattle, Washington.,2 Department of Urology, University of California , San Francisco, San Francisco, California.,5 Department of Urologic Surgery, Vanderbilt University Medical Center , Nashville, Tennessee
| | - Henry Tran
- 3 Department of Urologic Sciences, University of British Columbia , Vancouver, Canada
| | - Marshall L Stoller
- 2 Department of Urology, University of California , San Francisco, San Francisco, California
| | - Ben H Chew
- 3 Department of Urologic Sciences, University of British Columbia , Vancouver, Canada
| | - Thomas Chi
- 2 Department of Urology, University of California , San Francisco, San Francisco, California
| | - Manint Usawachintachit
- 2 Department of Urology, University of California , San Francisco, San Francisco, California
| | - Brian D Duty
- 4 Department of Urology, Oregon Health and Science University , Portland, Oregon
| | - John L Gore
- 1 Department of Urology, University of Washington , Seattle, Washington
| | - Jonathan D Harper
- 1 Department of Urology, University of Washington , Seattle, Washington
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35
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Li JK, Teoh JY, Ng CF. Updates in endourological management of urolithiasis. Int J Urol 2018; 26:172-183. [PMID: 30575154 DOI: 10.1111/iju.13885] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Accepted: 11/21/2018] [Indexed: 12/23/2022]
Abstract
Urinary stone disease, or urolithiasis, is a very common disease with increasing prevalence and incidence. With the advancement of endoscopic techniques, the treatment outcomes of ureteroscopy (or transureteral lithotripsy) and percutaneous nephrolithotomy are continuously improving. In recent years, there have been many new developments in the field, including new endoscopy design, more effective auxiliary tools, improvement in treatment protocols, introduction of robotic technology, combining both ureteroscopy and percutaneous nephrolithotomy (endoscopic combined intrarenal surgery or transureteral lithotripsy-assisted percutaneous nephrolithotomy), improvement in laser technology, and so on. All these new inputs will further improve the treatment efficacy and safety of the procedures, thus benefiting our patients. In the present review, we briefly go through the main steps of ureteroscopy and percutaneous nephrolithotomy, with a concise description and application of these new advances.
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Affiliation(s)
- Joseph Km Li
- S. H. Ho Urology Center, Department of Surgery, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - Jeremy Yc Teoh
- S. H. Ho Urology Center, Department of Surgery, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - Chi-Fai Ng
- S. H. Ho Urology Center, Department of Surgery, The Chinese University of Hong Kong, Shatin, Hong Kong
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36
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Carrion DM, Cansino JR, Quintana LM, Gómez Rivas J, Mainez Rodriguez JA, Pérez-Carral JR, Martínez-Piñeiro L. Prone percutaneous nephrolithotomy: its advantages and our technique for puncture. Transl Androl Urol 2018; 7:950-959. [PMID: 30505733 PMCID: PMC6256044 DOI: 10.21037/tau.2018.10.04] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Percutaneous nephrolithotomy (PCNL) is considered the treatment of choice for large urinary calculi and staghorn lithiasis. The approach for this surgery may be either supine or prone, and different access techniques are described in the literature with the use of ultrasound, fluoroscopy, or both combined. We believe that prone PCNL offers to the urologist key advantages, such as the possibility of puncturing anatomically abnormal urinary tracts, to perform multiple percutaneous tracts in the same kidney, experiencing the vacuum cleaner effect, ease of exploring the upper calyx through the inferior calyx, possibility to perform endoscopic combined intrarenal surgery (ECIRS) and bilateral simultaneous surgery, and to performed over local anesthesia. An adequate training for the endourologist should include both the prone and supine techniques for PCNL and to know which patient can benefit the most from each one.
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Affiliation(s)
- Diego M Carrion
- Department of Urology, La Paz University Hospital, Madrid, Spain
| | - José Ramón Cansino
- Department of Urology, La Paz University Hospital, Madrid, Spain.,La Paz University Hospital Institute for Health Research (IdiPAZ), Madrid, Spain
| | - Luis M Quintana
- Department of Urology, La Paz University Hospital, Madrid, Spain
| | - Juan Gómez Rivas
- Department of Urology, La Paz University Hospital, Madrid, Spain.,La Paz University Hospital Institute for Health Research (IdiPAZ), Madrid, Spain
| | | | | | - Luis Martínez-Piñeiro
- Department of Urology, La Paz University Hospital, Madrid, Spain.,La Paz University Hospital Institute for Health Research (IdiPAZ), Madrid, Spain
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37
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Yang YH, Wen YC, Chen KC, Chen C. Ultrasound-guided versus fluoroscopy-guided percutaneous nephrolithotomy: a systematic review and meta-analysis. World J Urol 2018; 37:777-788. [PMID: 30244337 DOI: 10.1007/s00345-018-2443-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Accepted: 08/09/2018] [Indexed: 12/31/2022] Open
Abstract
PURPOSE To evaluate the efficacy and safety of ultrasound-guided (UG) versus fluoroscopy-guided (FG) percutaneous nephrolithotomy (PCNL). METHODS A systematic search of PubMed (MEDLINE), Embase, and the Cochrane Library was conducted to identify randomized controlled trials that compared UG-PCNL with FG-PCNL, and a meta-analysis of those studies was completed. The primary outcomes assessed were stone-free rate (SFR) and complication rate. Secondary outcomes assessed were the successful access-creation rate, time necessary for entrance into the target calyx, auxiliary procedure rate, transfusion rate, hemoglobin decrease after surgery, surgery duration, and hospital stay. RESULTS Eight studies comprising 966 patients were included in the meta-analysis. Compared with FG-PCNL, UG-PCNL had comparable stone-free rates [odds ratio (OR) 0.95; 95% confidence interval (CI) 0.67-1.35; p = 0.79] irrespective of the patient's position, and a favorable safety profile resulting in a lower complication rate (OR 0.56; 95% CI 0.36-0.86; p = 0.009). No statistical difference was found between UG and FG groups in secondary outcomes. CONCLUSIONS UG-PCNL is as effective as FG-PCNL and has the advantage of lower complication rates. In addition, UG-PCNL could be performed with patients in the supine position without compromising its efficacy.
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Affiliation(s)
- Yu-Hsiang Yang
- School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan.,Department of Medical education, Linkou Chang Gung Memorial Hospital, Taoyuan District, Taoyuan, Taiwan
| | - Yu-Ching Wen
- Department of Urology, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan.,Department of Urology, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan
| | - Kuan-Chou Chen
- Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan.,Department of Urology, Shuang-Ho Hospital, Taipei Medical University, New Taipei City, Taiwan
| | - Chiehfeng Chen
- Department of Public Health, School of Medicine, College of Medicine, Taipei Medical University, 250 Wuxing St., Taipei, 11031, Taiwan, ROC. .,Cochrane Taiwan, Taipei Medical University, Taipei, Taiwan. .,Division of Plastic Surgery, Department of Surgery, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan. .,Evidence-Based Medicine Center, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan.
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38
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Pietropaolo A, Jones P, Whitehurst L, Rai BP, Geraghty R, Somani BK. Efficacy and Safety of Ureteroscopy for Stone Disease in a Solitary Kidney: Findings From a Systematic Review. Urology 2018; 119:17-22. [DOI: 10.1016/j.urology.2018.03.043] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Revised: 02/10/2018] [Accepted: 03/24/2018] [Indexed: 12/22/2022]
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39
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Xiao J, Wang X, Li J, Wang M, Han T, Zhang C, Du Y, Hao G, Tian Y. Treatment of upper urinary tract stones with flexible ureteroscopy in children. Can Urol Assoc J 2018; 13:E78-E82. [PMID: 30169147 DOI: 10.5489/cuaj.5283] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
INTRODUCTION This single-centre, retrospective study aimed to assess the efficacy and safety of flexible ureteroscopy (FURS) combined with holmium laser lithotripsy in treating children with upper urinary tract stones. METHODS From June 2014 to October 2015, a total of 100 children (74 boys and 26 girls) with upper urinary tract stones were treated using FURS. A 4.7 Fr double-J stent was placed two weeks before operation. Patients were considered stone-free when the absence of residual fragments was observed on imaging studies. The preoperative, operative, and postoperative data of the patients were retrospectively analyzed. RESULTS A total of 100 pediatric patients with a mean age of 3.51±1.82 years underwent 131 FURS and holmium laser lithotripsy. Mean stone diameter was 1.49±0.92 cm. Average operation time was 30.8 minutes (range 15-60). The laser power was controlled between 18 and 32 W, and the energy maintained between 0.6 and 0.8 J at any time; laser frequency was controlled between 30 and 40 Hz. Complications were observed in 69 (69.0 %) patients and classified according to the Clavien system. Postoperative hematuria (Clavien I) occurred in 64 (64.0 %) patients. Postoperative urinary tract infection with fever (Clavien II) was observed in 8/113 (7.1%) patients. No ureteral perforation and mucosa avulsion occurred. The overall stone-free rate of single operation was 89/100 (89%). Stone diameter and staghorn calculi were significantly associated with stone-free rate. CONCLUSIONS FURS and holmium laser lithotripsy is effective and safe in treating children with upper urinary tract stones.
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Affiliation(s)
- Jing Xiao
- Department of Urology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Xiangyu Wang
- Department of Urology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Jun Li
- Department of Urology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Miaoiao Wang
- Department of Urology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Tiandong Han
- Department of Urology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Caixiang Zhang
- Department of Urology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Yuan Du
- Department of Urology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Gangyue Hao
- Department of Urology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Ye Tian
- Department of Urology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
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Rodríguez-Monsalve Herrero M, Doizi S, Keller EX, De Coninck V, Traxer O. Retrograde intrarenal surgery: An expanding role in treatment of urolithiasis. Asian J Urol 2018; 5:264-273. [PMID: 30364659 PMCID: PMC6197554 DOI: 10.1016/j.ajur.2018.06.005] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Revised: 05/05/2018] [Accepted: 05/10/2018] [Indexed: 12/18/2022] Open
Abstract
During the past 3 decades, the surgical management of kidney stones has undergone many technological advances and one is the development of the flexible ureteroscopy. The development of this instrument as well as ancillary equipment such as baskets, graspers, and others, and improvements in lithotripsy with Holmium: YAG laser have led to expand its indications with diagnostic and therapeutic management of medical issues of the upper urinary tract such as urolithiasis and urothelial tumors. The objective of this review is to describe its indications and results in the different scenarios for the treatment of urinary stones.
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Affiliation(s)
| | - Steeve Doizi
- Department of Urology, Tenon Hospital, Assistance-Publique Hôpitaux de Paris, Paris, France
| | - Etienne Xavier Keller
- Department of Urology, Tenon Hospital, Assistance-Publique Hôpitaux de Paris, Paris, France
| | - Vincent De Coninck
- Department of Urology, Tenon Hospital, Assistance-Publique Hôpitaux de Paris, Paris, France
| | - Olivier Traxer
- Department of Urology, Tenon Hospital, Assistance-Publique Hôpitaux de Paris, Paris, France
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Wollin DA, Tom WR, Jiang R, Simmons WN, Preminger GM, Lipkin ME. An in vitro evaluation of laser settings and location in the efficiency of the popcorn effect. Urolithiasis 2018; 47:377-382. [PMID: 29947996 DOI: 10.1007/s00240-018-1066-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Accepted: 06/08/2018] [Indexed: 11/30/2022]
Abstract
To examine different locations and laser settings' effects on the efficiency of the "popcorn" method of laser lithotripsy, which consists of placing the laser in a group of small stones and firing continuously to break them into smaller particles. Pre-fragmented BegoStones were created between 2 and 4 mm to mimic typical popcorning conditions. A 0.5 g collection of fragments was placed into 3D-printed models (a spherical calyx and ellipsoid pelvis model) and a 200-µm laser fiber was positioned above the stones. The laser was fired for 2 min with irrigation, with 5 trials at each setting: 0.2 J/50 Hz, 0.5 J/20 Hz, 0.5 J/40 Hz, 1 J/20 Hz, 0.2 J/80 Hz, 0.5 J/80 Hz. After drying, fragmentation efficiency was determined by calculating the mass of stones reduced to sub-2 mm particles. Statistical analysis was performed with ANOVA and Student's t test. The trials within the calyx model were significantly more efficient compared to the pelvis (0.19 vs 0.15 g, p = 0.01). When comparing laser settings, there was a difference between groups by one-way ANOVA [F(5,54) = 8.503, p = 5.47 × 10-6]. Post hoc tests showed a power setting of 0.5 J/80 Hz was significantly more efficient than low-power settings 0.2 J/50 Hz and 0.5 J/20 Hz (p < 0.05). Additionally, 0.2 J/50 Hz was significantly less efficient than 0.5 J/40 Hz, 1 J/20 Hz, and 0.2 J/80 Hz. Popcorning is most efficient in smaller spaces; we recommend displacement of stones into a calyx before popcorning. No difference was seen between high-power settings, although 0.5 J/40 Hz and 0.5 J/80 Hz performed best, suggesting that moderate energy popcorning methods with at least 0.5 J per pulse are most efficient.
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Affiliation(s)
- Daniel A Wollin
- Division of Urologic Surgery, Duke University Medical Center, Durham, NC, USA.
| | - Westin R Tom
- Duke University School of Medicine, Durham, NC, USA
| | - Ruiyang Jiang
- Division of Urologic Surgery, Duke University Medical Center, Durham, NC, USA
| | - W Neal Simmons
- Department of Mechanical Engineering and Materials Science, Duke University, Durham, NC, USA
| | - Glenn M Preminger
- Division of Urologic Surgery, Duke University Medical Center, Durham, NC, USA
| | - Michael E Lipkin
- Division of Urologic Surgery, Duke University Medical Center, Durham, NC, USA
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Wei C, Zhang Y, Pokhrel G, Liu X, Gan J, Yu X, Ye Z, Wang S. Research progress of percutaneous nephrolithotomy. Int Urol Nephrol 2018; 50:807-817. [PMID: 29556901 DOI: 10.1007/s11255-018-1847-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Accepted: 03/12/2018] [Indexed: 12/29/2022]
Abstract
Percutaneous nephrolithotomy (PCNL) is generally accepted as the gold standard treatment for the treatment of large kidney stones (> 2 cm). For nearly 40 years, with the continuous progress of technology and the constant updating of ideas, PCNL has made great progress. In this review, we discuss the current research progress, recent advancement and hot spot of the whole process of PCNL including anesthesia, position, puncture, dilation, lithotripsy approaches, perfusate, tube placement, hospitalization time, drug, treatment of residual stones, prognosis judgment and operation evaluation by summarizing the related research in this article.
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Affiliation(s)
- Chao Wei
- Department of Urology, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiafang Avenue, Qiaokou, Wuhan, 430030, Hubei, China
| | - Yucong Zhang
- Department of Urology, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiafang Avenue, Qiaokou, Wuhan, 430030, Hubei, China
| | - Gaurab Pokhrel
- Department of Urology, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiafang Avenue, Qiaokou, Wuhan, 430030, Hubei, China
| | - Xiaming Liu
- Department of Urology, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiafang Avenue, Qiaokou, Wuhan, 430030, Hubei, China
| | - Jiahua Gan
- Department of Urology, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiafang Avenue, Qiaokou, Wuhan, 430030, Hubei, China
| | - Xiao Yu
- Department of Urology, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiafang Avenue, Qiaokou, Wuhan, 430030, Hubei, China
| | - Zhangqun Ye
- Department of Urology, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiafang Avenue, Qiaokou, Wuhan, 430030, Hubei, China
| | - Shaogang Wang
- Department of Urology, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiafang Avenue, Qiaokou, Wuhan, 430030, Hubei, China.
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Kim HS, Yoo S, Cho SY. The Clinical Efficacy of Dual-Lumen Catheter Technique in Retrograde Intrarenal Surgery for the Management of Nephrolithiasis: A Propensity Score Analysis. J Endourol 2018; 32:1093-1099. [PMID: 29316803 DOI: 10.1089/end.2017.0742] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
OBJECTIVE To assess the clinical efficacy of dual-lumen catheter technique in retrograde intrarenal surgery (RIRS) in terms of stone-free rate. METHODS The data of 172 patients who underwent RIRS for renal stones between 2010 and 2017 were retrospectively reviewed. Patients were classified into two groups depending on whether the dual-lumen catheter technique was used (group 1, n = 25) or not (group 2, n = 147) during RIRS. In turn, all patients of group 1 were compared with those of group 2 using propensity score analysis methods. Clinical variables, including post-RIRS residual fragments (RFs) (≥2 mm) and dusts (sandy stones) (≤1 mm), were compared between both groups. Logistic regression analyses were conducted to identify the predictors of postoperative RFs and dusts. RESULTS According to propensity score analysis, no other clinical variables were significantly different between the two groups, except the dust-free rate was significantly higher in group 1 than in group 2 (92% vs 40%, p < 0.001). In multivariate analysis, the performance of dual-lumen catheter technique was an independent predictor of the absence of dusts after RIRS (odds ratio [OR], 0.040; 95% confidence interval [CI], 0.070-0.220). In addition, on performing multivariate analyses in another matched population, it was found that although the technique adversely affected the removal of RFs (OR, 4.711; 95% CI, 1.203-18.447), it showed an excellent effect on the evacuation of dusts (OR, 0.049; 95% CI, 0.007-0.347). CONCLUSION Our analyses suggest that the use of dual-lumen catheter during RIRS can facilitate the evacuation of sandy stones. However, further prospective randomized trials are required to verify the usefulness of this technique in real clinical practice.
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Affiliation(s)
- Hyung Suk Kim
- 1 Department of Urology, Dongguk University Ilsan Medical Center , Goyang, Korea
| | - Sangjun Yoo
- 2 Department of Urology, Seoul National University Boramae Medical Center , Seoul, Korea
| | - Sung Yong Cho
- 2 Department of Urology, Seoul National University Boramae Medical Center , Seoul, Korea
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44
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Doizi S, Traxer O. Flexible ureteroscopy: technique, tips and tricks. Urolithiasis 2017; 46:47-58. [PMID: 29222575 DOI: 10.1007/s00240-017-1030-x] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2017] [Accepted: 11/20/2017] [Indexed: 12/11/2022]
Abstract
During the last decades, the surgical management of kidney stones benefited of many technological advances and one of them is the development of flexible ureteroscopy (fURS). This tool, ancillary equipment such as graspers and baskets, and lithotripsy technique with Holmium:YAG laser underwent many improvements leading to a widening of its indications with diagnostic and therapeutic management of upper urinary tract pathologies such as urolithiasis and urothelial tumors. The objective of this review is to describe the surgical technique for fURS as well as tips and tricks for the treatment of renal stones.
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Affiliation(s)
- Steeve Doizi
- Department of Urology, Tenon Hospital, Assistance-Publique Hôpitaux de Paris, 4 rue de la Chine, 75020, Paris, France.,Pierre et Marie Curie University, Paris, France.,Groupe de Recherche Clinique sur la Lithiase Urinaire, Tenon Hospital, Assistance Publique-Hôpitaux de Paris, Paris, France
| | - Olivier Traxer
- Department of Urology, Tenon Hospital, Assistance-Publique Hôpitaux de Paris, 4 rue de la Chine, 75020, Paris, France. .,Pierre et Marie Curie University, Paris, France. .,Groupe de Recherche Clinique sur la Lithiase Urinaire, Tenon Hospital, Assistance Publique-Hôpitaux de Paris, Paris, France.
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45
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Kang SK, Cho KS, Kang DH, Jung HD, Kwon JK, Lee JY. Systematic review and meta-analysis to compare success rates of retrograde intrarenal surgery versus percutaneous nephrolithotomy for renal stones >2 cm: An update. Medicine (Baltimore) 2017; 96:e9119. [PMID: 29245347 PMCID: PMC5728962 DOI: 10.1097/md.0000000000009119] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND We performed a systematic review and meta-analysis comparing stone-free rates between retrograde intrarenal surgery (RIRS) and percutaneous nephrolithotomy (PCNL), using updated, more reliable evidence. MATERIALS AND METHODS Randomized controlled trials comparing RIRS and PCNL for >2 cm stones were identified from electronic databases. Stone-free rates for the procedures were compared by qualitative and quantitative syntheses (meta-analyses). Outcome variables are shown as risk ratios (RRs) with 95% confidence intervals (CIs). RESULTS Eleven articles were included in this study. Most recently published studies exhibited relatively low quality during quality assessment. For the meta-analysis comparing success (stone-free) rates between PCNL and RIRS, the forest plot using the random-effects model showed an RR of 1.11 (95% CI 1.02-1.21, P < .014) favoring PCNL. After determining the among-study heterogeneity, subgroup analysis was performed of 9 studies with less heterogeneity: the stone-free rate of PCNL was superior to that of RIRS using a fixed-effect model (RR 1.07, 95% CI 1.01-1.14, P < .019) for these studies. CONCLUSIONS RIRS can be a safe and effective procedure for selected patients with large renal stones. However, in this meta-analysis, the postoperative stone-free rate of PCNL was higher than that of RIRS in patients with >2 cm renal stones.
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Affiliation(s)
| | - Kang Su Cho
- Department of Urology, Gangnam Severance Hospital, Urological Science Institute, Yonsei University College of Medicine, Seoul
| | - Dong Hyuk Kang
- Department of Urology, Inha University School of Medicine, Incheon
| | - Hae Do Jung
- Department of Urology, Yongin Severance Hospital, Yonsei University Health System, Yongin
| | - Jong Kyou Kwon
- Department of Urology, Severance Check-Up, Yonsei University Health System, Seoul, Korea
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Rassweiler J, Fiedler M, Charalampogiannis N, Kabakci AS, Saglam R, Klein JT. Robot-assisted flexible ureteroscopy: an update. Urolithiasis 2017; 46:69-77. [PMID: 29170856 DOI: 10.1007/s00240-017-1024-8] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Accepted: 11/11/2017] [Indexed: 12/21/2022]
Abstract
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.
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Affiliation(s)
- Jens Rassweiler
- Department of Urology, SLK-Kliniken Heilbronn, University of Heidelberg, 74078, Heilbronn, Germany.
| | - Marcel Fiedler
- Department of Urology, SLK-Kliniken Heilbronn, University of Heidelberg, 74078, Heilbronn, Germany
| | - Nikos Charalampogiannis
- Department of Urology, SLK-Kliniken Heilbronn, University of Heidelberg, 74078, Heilbronn, Germany
| | | | - Remzi Saglam
- Department of Urology, Medicana International Hospital, Ankara, Turkey
| | - Jan-Thorsten Klein
- Department of Urology, Medical School Ulm, University of Ulm, Ulm, Germany
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47
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Müller PF, Schlager D, Hein S, Bach C, Miernik A, Schoeb DS. Robotic stone surgery - Current state and future prospects: A systematic review. Arab J Urol 2017; 16:357-364. [PMID: 30140470 PMCID: PMC6104666 DOI: 10.1016/j.aju.2017.09.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Revised: 09/19/2017] [Accepted: 09/27/2017] [Indexed: 12/23/2022] Open
Abstract
Objective To provide a comprehensive review of robot-assisted surgery in urolithiasis and to consider the future prospects of robotic approaches in stone surgery. Materials and methods We performed a systematic PubMed© literature search using predefined Medical Subject Headings search terms to identify PubMed-listed clinical research studies on robotic stone surgery. All authors screened the results for eligibility and two independent reviewers performed the data extraction. Results The most common approach in robotic stone surgery is a robot-assisted pyelolithotomy using the da Vinci™ system (Intuitive Surgical Inc., Sunnyvale, CA, USA). Several studies show this technique to be comparable to classic laparoscopic and open surgical interventions. One study that focused on ureteric stones showed a similar result. In recent years, promising data on robotic intrarenal surgery have been reported (Roboflex Avicenna™; Elmed Medical Systems, Ankara, Turkey). Initial studies have shown its feasibility and high stone-free rates and prove that this novel endoscopic approach is safe for the patient and comfortable for the surgeon. Conclusions The benefits of robotic devices in stone surgery in existing endourological, laparoscopic, and open treatment strategies still need elucidation. Although recent data are promising, more prospective randomised controlled studies are necessary to clarify the impact of this technique on patient safety and stone-free rates.
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Affiliation(s)
- Philippe F Müller
- Department of Urology, Faculty of Medicine, University of Freiburg, Medical Centre, Freiburg, Germany
| | - Daniel Schlager
- Department of Urology, Faculty of Medicine, University of Freiburg, Medical Centre, Freiburg, Germany
| | - Simon Hein
- Department of Urology, Faculty of Medicine, University of Freiburg, Medical Centre, Freiburg, Germany
| | - Christian Bach
- Department of Urology, University Hospital Aachen, Aachen, Germany
| | - Arkadiusz Miernik
- Department of Urology, Faculty of Medicine, University of Freiburg, Medical Centre, Freiburg, Germany
| | - Dominik S Schoeb
- Department of Urology, Faculty of Medicine, University of Freiburg, Medical Centre, Freiburg, Germany
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Aldoukhi AH, Roberts WW, Hall TL, Ghani KR. Holmium Laser Lithotripsy in the New Stone Age: Dust or Bust? Front Surg 2017; 4:57. [PMID: 29067287 PMCID: PMC5649137 DOI: 10.3389/fsurg.2017.00057] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2017] [Accepted: 09/11/2017] [Indexed: 11/13/2022] Open
Abstract
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. Contact laser lithotripsy can be performed using fragmentation or dusting settings. Fragmentation employs settings of low Fr and high PE to break stones that are then extracted with retrieval devices. Dusting is the utilization of high Fr and low PE settings to break stones into submillimeter fragments for spontaneous passage without the need for basket retrieval. Use of the long PW mode during lithotripsy can reduce stone retropulsion and is increasingly available in new generation lasers. During non-contact laser lithotripsy, stone fragments are rapidly pulverized in a calyx in laser bursts that result in stones breaking into fine fragments. In this review, we discuss the effect of different holmium laser settings on stone fragmentation, and the clinical implications in a very much evolving field.
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Affiliation(s)
- Ali H Aldoukhi
- Division of Endourology, Department of Urology, University of Michigan, Ann Arbor, MI, United States
| | - William W Roberts
- Division of Endourology, Department of Urology, University of Michigan, Ann Arbor, MI, United States.,Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, United States
| | - Timothy L Hall
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI, United States
| | - Khurshid R Ghani
- Division of Endourology, Department of Urology, University of Michigan, Ann Arbor, MI, United States
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Yang H, Li J, Long G, Wang S. The application of a novel integrated rigid and flexible Nephroscope in percutaneous nephrolithotomy for renal staghorn stones. BMC Urol 2017; 17:67. [PMID: 28836969 PMCID: PMC5571506 DOI: 10.1186/s12894-017-0257-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Accepted: 08/16/2017] [Indexed: 12/23/2022] Open
Abstract
Background Renal staghorn stones are challenging for urologists to ensure maximum stone clearance and minimal morbidity. Percutaneous nephrolithotomy (PCNL) has become the gold standard treatment for renal staghorn stones. To assess the safety and efficacy of a novel integrated rigid and flexible percutaneous nephroscope(Rigi-flex nephroscope) in PCNL for renal staghorn stones.We present our initial experience with this new technique. Methods From March to July 2016, a prospective analysis of 3 patients with staghorn stones treated with Rigi-flex nephroscope in PCNLunder totally ultrasound guidance by paravertebral block (PVB) anesthesia was done. PCNL was performed with the rigid section of a 13-Fr Rigi-flex nephroscope firstly and the stones were disintegrated into fragments by holmium laser.Then the stones were removed by active flushout, followed by a search for residual stones in other inaccessible calyces with the flexible section. Finally, the residual stones were disintegrated into small fractions by holmium laser in situ or repositioned with a set of disposable retrieval baskets to pelvic or other accessible areas. The whole procedure was accomplished via only one nephrostomy tract. The operating time, stone-free rates (SFR), postoperative hemoglobin drop, complications, length of hospitalization, were recorded. Results The operation time were 89, 62 and 45 min, respectively, the postoperative hemoglobin drop was 1, 0.8 and 0.9 mg/dl, respectively.The postoperative Kidney-Ureter-Bladder (KUB) radiograph of the three patients showed no residual fragment >3 mm. No patients needed blood transfusion and suffered significant complications. The length of hospitalization was 9, 6 and 4 days, respectively. No patient needed multiple tracts PCNL or staged auxiliary measures one month after the operation. Conclusions The application of Rigi-flex nephroscope in PCNL under ultrasound guidance for staghorn stones has its unique advantages as monotherapy with increasing procedural stone free rate (SFR) via single nephrostomy tract, hence there is less morbidity as it does not require additional tracts dilation and staged auxiliary procedures combination. However, SFR should also be evaluated at a longer follow-up, particularly for staghorn stone, further large-scale multicenter prospective clinical trial are needed to verify its feasibility.
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Affiliation(s)
- Huan Yang
- Dartment of Urology, Tongji Hospital,Tongji Medical School, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Jianxing Li
- Department of Urology, Beijing Tsinghua changgung Hospital, Beijing, China
| | - Gang Long
- YouCare Technology Co., Ltd, Wuhan, China
| | - Shaogang Wang
- Dartment of Urology, Tongji Hospital,Tongji Medical School, Huazhong University of Science and Technology, Wuhan, 430030, China.
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50
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Cansino R, Portilla A, Rivas JG. Performing easy prone punction. Cent European J Urol 2017; 70:170-174. [PMID: 28721284 PMCID: PMC5510337 DOI: 10.5173/ceju.2017.932] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Revised: 04/09/2017] [Accepted: 04/17/2017] [Indexed: 11/30/2022] Open
Abstract
Introduction Percutaneous renal surgery has been considered one of the most important advances in urology. There are several possibilities to perform a kidney puncture such as using fluoroscopy, ultrasound or both. The aim of this article is to describe our puncture technique. Material and methods Correct puncture is one of the most critical and challenging steps during percutaneous surgery. Bull’s eye technique and other similar techniques supported by fluoroscopy try to make triangulations and provide different views. On the other hand, many urologists prefer the usage of ultrasound to help reach the calyx. The perfect puncture could also be a scanner guided puncture. Results Under general anesthesia, cystoscopy is performed for ureteral catheter placement. The excretory system is opacified by administering contrast to the ureteral catheter. Perpendicular puncture on the selected calyx is done; this is a 90° puncture with a fine spinal needle 20G into the selected calyx under fluoroscopy control to visualize the correct penetration into the calyx. Moving forward to the next step, an 18G needle is used to follow the correct calyx – infundibulum – renal pelvis path. The goal is to put together both tips of the 2 needles (needle Kiss technique). Conclusions After several years of performing percutaneous surgery, we conclude that our technique can facilitate the prone position puncture thanks to the information given from the thin needle while simultaneously minimizing the use of fluoroscopy for triangulation maneuvers and avoiding the use of ultrasound to determine the depth of the target calyx.
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Affiliation(s)
- Ramón Cansino
- Department of Urology, Hospital Universitario La Paz, Madrid, Spain
| | | | - Juan Gómez Rivas
- Department of Urology, Hospital Universitario La Paz, Madrid, Spain
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