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Sebaey A, Taleb AA, Elbashir S, Gomaa R, Elshazli A, Saber W. Flexible ureterorenoscopy (RIRS) vs. Mini- percutaneous nephrolithotomy (MINI-PCNL) for renal stones 20–30 mm a prospective randomized study. AFRICAN JOURNAL OF UROLOGY 2022. [DOI: 10.1186/s12301-022-00278-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
To evaluate the safety and efficacy of mini percutaneous nephrolithotomy (mini PCNL) and retrograde intrarenal surgery (RIRS) in treatment of kidney stones 20–30 mm.
Methods
A prospective randomized study of 70 patients who presented to the urology department with calyceal or renal pelvic stone of 20–30 mm between September 2017 and September 2019. Patients were randomly divided into two groups, Group A (Mini PCNL) consists of 35 patients who were treated with mini PCNL and Group B (RIRS) consists of 35 patients who were Achieving success of the technique was considered when the patient is stone-free or has radiologically insignificant residual fragments < 4 mm.
Results
The demographic data in this study were comparable in both groups. The stone size was 20.43 ± 2.2 mm in group A & 20.5 ± 2.1 in group B, with no statistical significance. Meanwhile, the operative time in group A was 59.71 ± 19.44 min and in group B was 80.43 ± 14.79 min with statistical significance difference (p value < 0.001), while Fluoroscopy time had a mean of 8.11 ± 2.05 min in group A & 5.8 ± 1.98 min in group B with statistically significant diffrence (p value < 0.001). The stone free rate (SFR) was 88.6% in mini PCNL and 82.9% in RIRS with no statistically significant difference (p value: 0.5).
Conclusion
RIRS and mini PCNL can be an effective and alternative option for treatment of renal stones 2–3 cm. Both techniques have relatively similar SFR but RIRS showed more operative time, on contrary Mini-PCNL has more operative and postoperative complications. A multicenter studies with larger numbers of patients will be more effective to confirm these results.
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Akpayak IC, Agbo CA, Nabasu LE. Retrograde ureteroscopy in the management of distal ureteric stones: A retrospective analysis of outcome and complications. Ann Afr Med 2020; 19:258-262. [PMID: 33243949 PMCID: PMC8015960 DOI: 10.4103/aam.aam_65_19] [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: 11/04/2022] Open
Abstract
Background Urinary stones affect 8%-15% of the world population. In Nigeria, contemporary reports have shown that the incidence of urinary stones is rising. The distal ureter has been described as the most common location of ureteric stones. This study seeks to review our experience in the ureteroscopic management of distal ureteric stones with a view to appraising the stone clearance rate and the complications seen in our patients. Patients and Methods This descriptive study reviewed the record of 21 patients, who had semirigid ureteroscopy and pneumatic lithotripsy for distal ureteric stone between October 2015 and September 2018. All patients had computed tomography urography preoperatively to locate the stone. Data on patients' demographics, indication for the surgery, location and size of stone, preoperative double-J (DJ) placement, postoperative DJ stent placement, intraoperative and postoperative complications, and status of stone clearance were retrieved and subjected to statistical analysis. Results The mean age of the patients was 37.95 ± 11.09 (range, 21-67) years. The mean stone size was 8.06 ± 2.87 mm with a range of 4.8 mm-15.0 mm. Out of the 21 patients, 20 (95.2%) had the procedure for recurrent ureteric colic and 1 (48%) was for hematuria. Four (19.0%) patients had DJ stent preoperatively, whereas 17 (81.0%) patients did not have. Fourteen (66.7%) patients had intraoperative ureteric dilatation. Postoperative DJ stent was placed in 17 (81.0%) patients, whereas 4 (19.0%) patients did not have. Three (14.3%) patients had mucosal flap, 6 (14.3%) had mucosal abrasion, 2 (9.5%) had bleeding, 1 (4.8%) patient had transient hematuria postoperatively, and 2 (9.5%) patients had urinary tract infection. Nineteen (90.5%) patients had complete clearance in a single surgery. Two (9.5%) patients had symptomatic residual fragments that required repeat ureteroscopy. Conclusion Our study has shown that ureteroscopy is a useful and safe technique in the removal of stones in distal ureter.
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Affiliation(s)
| | - Christian A Agbo
- Department of Surgery, Division of Urology, Jos University Teaching Hospital, Jos, Nigeria
| | - Lemech E Nabasu
- Department of Surgery, Division of Urology, Jos University Teaching Hospital, Jos, Nigeria
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3
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Linehan J, Schoenberg M, Seltzer E, Thacker K, Smith AB. Complications Associated With Ureteroscopic Management of Upper Tract Urothelial Carcinoma. Urology 2020; 147:87-95. [PMID: 33031842 DOI: 10.1016/j.urology.2020.09.036] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 09/07/2020] [Accepted: 09/17/2020] [Indexed: 10/23/2022]
Abstract
OBJECTIVES To compile and examine safety data from clinical studies of endoscopic management of patients with low-grade upper tract urothelial carcinoma (UTUC) to identify rates and factors associated with reported complications. METHODS Ovid Medline and Ovid Medline Daily (with Embase as secondary search) including citations from 1946-2018 were queried using the following terms: ureteroscopy, ureter, catheter, endoscopy, complication, adverse events, morbidity, ablation, laser, upper tract urothelial carcinoma, ureteral stricture, ureteral stenosis, and ureteral injury. Abstracts were reviewed for relevance; diagnostic studies, case studies, and reviews were excluded. RESULTS Thirty-eight publications (7 prospective, 31 retrospective) representing >1100 patients were identified. Ureteral stricture was the most frequently reported complication (studies; rates) (26/38; 0-27%), with incidence associated with number of procedures and treatment method. Bleeding, infection, and fever were most common with adjuvant treatment (BCG or mitomycin). Serious and fatal complications were rare. CONCLUSIONS Ureteral stricture is the most frequent complication of endoscopic UTUC management but can be managed successfully in most cases. Most complications were minor. Although additional prospective studies are needed, these results support the safety of ureteroscopic management of UTUC in appropriately selected patients.
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Affiliation(s)
- Jennifer Linehan
- Department of Urology, John Wayne Cancer Institute, Providence St. John's Health Center, Santa Monica, CA
| | - Mark Schoenberg
- Department of Urology, The Montefiore Medical Center & The Albert Einstein College of Medicine, Bronx, NY; UroGen Pharma, New York, NY
| | | | | | - Angela B Smith
- Department of Urology, Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC.
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4
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Dong H, Peng Y, Li L, Gao X. Prevention strategies for ureteral stricture following ureteroscopic lithotripsy. Asian J Urol 2017; 5:94-100. [PMID: 29736371 PMCID: PMC5934507 DOI: 10.1016/j.ajur.2017.09.002] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Revised: 03/14/2017] [Accepted: 06/19/2017] [Indexed: 11/15/2022] Open
Abstract
Ureteral stricture formation after ureteroscopic lithotripsy is a late complication that can lead to hydronephrosis and a subsequent risk of renal deterioration. The specific incidence is unknown, and the mechanism of stricture formation has not been completely explained. In this review, we summarize the current evidence regarding the incidence of this condition and discuss its pathogenesis. We then list preventive strategies to reduce the morbidity of ureteral strictures.
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Affiliation(s)
- Hao Dong
- Department of Urology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Yonghan Peng
- Department of Urology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Ling Li
- Department of Urology, Changhai Hospital, Second Military Medical University, Shanghai, China
| | - Xiaofeng Gao
- Department of Urology, Changhai Hospital, Second Military Medical University, Shanghai, China
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5
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Nevo A, Mano R, Baniel J, Lifshitz DA. Ureteric stent dwelling time: a risk factor for post-ureteroscopy sepsis. BJU Int 2017; 120:117-122. [DOI: 10.1111/bju.13796] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Amihay Nevo
- Department of Urology; Rabin Medical Centre; Petach Tikva Israel
- Sackler Faculty of Medicine; Tel Aviv University; Tel Aviv Israel
| | - Roy Mano
- Department of Urology; Rabin Medical Centre; Petach Tikva Israel
- Sackler Faculty of Medicine; Tel Aviv University; Tel Aviv Israel
| | - Jack Baniel
- Department of Urology; Rabin Medical Centre; Petach Tikva Israel
- Sackler Faculty of Medicine; Tel Aviv University; Tel Aviv Israel
| | - David A. Lifshitz
- Department of Urology; Rabin Medical Centre; Petach Tikva Israel
- Sackler Faculty of Medicine; Tel Aviv University; Tel Aviv Israel
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6
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Demirbas A, Resorlu B, Sunay MM, Karakan T, Karagöz MA, Doluoglu OG. Which Should be Preferred for Moderate-Size Kidney Stones? Ultramini Percutaneous Nephrolithotomy or Retrograde Intrarenal Surgery? J Endourol 2016; 30:1285-1289. [DOI: 10.1089/end.2016.0370] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Arif Demirbas
- Department of Urology, Ankara Training and Research Hospital, Ankara, Turkey
| | - Berkan Resorlu
- Department of Urology, Ankara Training and Research Hospital, Ankara, Turkey
| | - Mehmet Melih Sunay
- Department of Urology, Ankara Training and Research Hospital, Ankara, Turkey
| | - Tolga Karakan
- Department of Urology, Ankara Training and Research Hospital, Ankara, Turkey
| | - Mehmet Ali Karagöz
- Department of Urology, Ankara Training and Research Hospital, Ankara, Turkey
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7
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Abstract
PURPOSE OF REVIEW Ureteral access sheath (UAS) became increasingly popular worldwide. However, the safety of its routine use remains controversial. The aim of the current revision is to provide a systematic review on the benefits and disadvantages of the UAS. RECENT FINDINGS A systematic review was performed following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses criteria. Two reviewers independently searched the literature, finally identifying 20 articles valuable for this review. The use of UAS demonstrated several advantages to facilitate retrograde intrarenal access, lower intrarenal pressure, protect the ureter, protect the scope, and expedite stone extraction. Despite this, there is also some evidence that UAS use may be associated with acute ureteral injury and long-term complications, apparently related to maneuvers for UAS insertion and mucosal or deeper layers of injury and ischemia. Furthermore, there are still pending questions on the possible increase in stone-free rates, and decrease in operative time and costs. SUMMARY Although the use of UAS is associated with some risk and limiting factors, it appears from this systematic review that its use is common and safe for the retrograde intrarenal access. Therefore, UAS is highly recommended for the treatment of upper tract disease by means of retrograde intrarenal surgery.
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Cho SY. Current status of flexible ureteroscopy in urology. Korean J Urol 2015; 56:680-8. [PMID: 26495068 PMCID: PMC4610894 DOI: 10.4111/kju.2015.56.10.680] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Accepted: 08/21/2015] [Indexed: 12/23/2022] Open
Abstract
Retrograde intrarenal surgery (RIRS) is being performed for the surgical management of upper urinary tract pathology. With the development of surgical instruments with improved deflection mechanisms, visuality, and durability, the role of RIRS has expanded to the treatment of urinary calculi located in the upper urinary tract, which compensates for the shortcomings of shock wave lithotripsy and percutaneous nephrolithotomy. RIRS can be considered a conservative treatment of upper urinary tract urothelial cancer (UTUC) or for postoperative surveillance after radical treatment of UTUC under an intensive surveillance program. RIRS has a steep learning curve and various surgical techniques can be used. The choice of instruments during RIRS should be based on increased surgical efficiency, decreased complications, and improved cost-benefit ratio.
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Affiliation(s)
- Sung Yong Cho
- Department of Urology, Seoul Metropolitan Government-Seoul National University Boramae Medical Center, Seoul, Korea
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9
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Retrograde intrarenal surgery versus percutaneous lithotripsy to treat renal stones 2-3 cm in diameter. BIOMED RESEARCH INTERNATIONAL 2015; 2015:914231. [PMID: 25821828 PMCID: PMC4363980 DOI: 10.1155/2015/914231] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Revised: 02/18/2015] [Accepted: 02/23/2015] [Indexed: 12/18/2022]
Abstract
Objective. Retrograde intrarenal surgery (RIRS) performed using a flexible ureterorenoscope marked the beginning of a new era in urology. Today, even staghorn stones are successfully treated via RIRS. The recommended treatment for larger stones is percutaneous nephrolithotomy (PNL). However, the question of whether PNL or RIRS should be the first-line treatment option for larger stones remains controversial. In this study, we contribute to the debate by comparing the success and complication rates of PNL and RIRS that were used to treat renal pelvis stones 2-3 cm in diameter.
Materials and Methods. The medical records of 154 patients (74 PNL, 80 RIRS) were retrospectively evaluated. PNL patients were placed in Group 1 and RIRS patients in Group 2. Results. The complete stone-free rates were 95.5% in the PNL group and 80.6% in the RIRS group 1 month postoperatively (P = 0.061). The respective complication rates (evaluated using the Clavien system) were 13.5% and 8.8% (P = 0.520). Conclusions. RIRS affords a comparable success rate, causes fewer complications than PNL, and seems to be a promising alternative to PNL when larger stones are to be treated. Prospective randomized controlled trials are needed to confirm these findings.
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10
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Alexander B, Fishman AI, Grasso M. Ureteroscopy and laser lithotripsy: technologic advancements. World J Urol 2014; 33:247-56. [PMID: 25266163 DOI: 10.1007/s00345-014-1402-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2014] [Accepted: 08/31/2014] [Indexed: 11/26/2022] Open
Abstract
Ureteroscopic lithotripsy has evolved since the first reported cases employing rigid rod-lens endoscopes and stiff ultrasonic lithotrites. Fiber optics facilitated rigid endoscope miniaturization and the development of a steerable, deflectable flexible ureteroscopes. Over 30 years of technical innovations culminating in digital imagers and powerful, precise laser lithotrites, complimented by progressive endoscopic techniques have produced efficient endoscopic therapies with minimal morbidity and commonly performed in an outpatient setting.
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Affiliation(s)
- B Alexander
- Department of Urology, New York Medical College, Valhalla, NY, 10595, USA,
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11
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Abstract
In the last one to two decades, flexible ureteroscopy has rapidly expanded its role in the treatment of urologic stone disease. With the frequent and expanded use of flexible ureteroscopy, other ancillary instruments were developed in order to ease and facilitate this technique, such as ureteral access sheaths (UAS) and a variety of wires and baskets. These developments, along with improved surgeon ureteroscopic competence, have often brought into question the need to implement the “traditional technique” of flexible ureteroscopy. In this review, we discuss a brief history of flexible ureteroscopy, its expanded indications, and the controversy surrounding the use of UAS, wires, and baskets.
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Affiliation(s)
- Emad R Rizkala
- Department of Urology, Glickman Urological and Kidney Institute, Cleveland Clinic Foundation, Cleveland, OH 44195, USA
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12
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Mursi K, Elsheemy MS, Morsi HA, Ali Ghaleb AK, Abdel-Razzak OM. Semi-rigid ureteroscopy for ureteric and renal pelvic calculi: Predictive factors for complications and success. Arab J Urol 2013; 11:136-41. [PMID: 26558071 PMCID: PMC4443018 DOI: 10.1016/j.aju.2013.04.008] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2013] [Revised: 04/19/2013] [Accepted: 04/23/2013] [Indexed: 11/03/2022] Open
Abstract
OBJECTIVE To analyse and compare the effect of stone site and size, method of lithotripsy, and level of experience on the results and complications of semi-rigid ureteroscopy for ureteric and renal pelvic stones. PATIENTS AND METHODS Between April 2010 and May 2011, 90 patients underwent 95 ureteroscopies, using 7.5- and 9-F semi-rigid ureteroscopes, with or without pneumatic or laser lithotripsy. The peri-operative findings were analysed and compared. RESULTS The mean (SD) longest diameter of the stones was 11.8 (4.5) mm. Laser lithotripsy was used in 32 cases and pneumatic lithotripsy in 26. There were complications in 35 procedures in the form of colicky pain (2%), haematuria (1%), stone migration (7%), equipment failure (5%), access failure (8%), mucosal injury (7%), fever (2%) and extravasation (3%).The calculi were successfully retrieved in 75 patients (83%). The success rate was 95%, 77%, 85%, and 53% in the lower, middle, upper ureter and renal pelvis, respectively. CONCLUSIONS Upper ureteric stones can be managed safely with the semi-rigid ureteroscope. Renal pelvic stones are associated with a lower success rate, and thus they were not a primary indication for ureteroscopic intervention. The secondary ureteroscopic management of renal pelvic stones improved the results of subsequent alkalinisation or shock-wave lithotripsy if they could not be eradicated completely. The failure rate was significantly small in lower ureteric stones and stones of <10 mm. Less experience, a stone size of >15 mm and patients ⩽2 years old were associated with more complications or a lower success rate. There was no significant difference in the success or complication rate between laser and pneumatic lithotripsy.
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Affiliation(s)
- Khaled Mursi
- Department of Urology, Kasr Al-Ainy Hospitals, Cairo University, Cairo, Egypt
| | - Mohammed S Elsheemy
- Department of Urology, Kasr Al-Ainy Hospitals, Cairo University, Cairo, Egypt
| | - Hany A Morsi
- Department of Urology, Kasr Al-Ainy Hospitals, Cairo University, Cairo, Egypt
| | | | - Omar M Abdel-Razzak
- Department of Urology, Kasr Al-Ainy Hospitals, Cairo University, Cairo, Egypt
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13
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Gershman B, Eisner BH, Sheth S, Sacco DE. Ureteral Stenting and Retrograde Pyelography in the Office: Clinical Outcomes, Cost Effectiveness, and Time Savings. J Endourol 2013; 27:662-6. [DOI: 10.1089/end.2012.0644] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Boris Gershman
- Department of Urology, Harvard Medical School, Massachusetts General Hospital, Boston, Massachusetts
| | - Brian H. Eisner
- Department of Urology, Harvard Medical School, Massachusetts General Hospital, Boston, Massachusetts
| | - Sonali Sheth
- Department of Urology, Harvard Medical School, Massachusetts General Hospital, Boston, Massachusetts
| | - Dianne E. Sacco
- Department of Urology, Harvard Medical School, Massachusetts General Hospital, Boston, Massachusetts
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14
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Categorization of intraoperative ureteroscopy complications using modified Satava classification system. World J Urol 2013; 32:131-6. [PMID: 23504074 DOI: 10.1007/s00345-013-1054-y] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2012] [Accepted: 03/06/2013] [Indexed: 10/27/2022] Open
Abstract
OBJECTIVES To review our experience with ureteroscopy (URS) in the treatment of ureteral calculi and stratify intraoperative complications of URS according to the modified Satava classification system. PATIENTS AND METHODS We performed a retrospective analysis of 1,208 patients (672 males and 536 females), with a mean age of 43.1 years (range 1-78), who underwent ureteroscopic procedures for removal of ureteral stones. Intraoperative complications were recorded according to modified Satava classification system. Grade 1 complications included incidents without consequences for the patient; grade 2 complications, which are treated intraoperatively with endoscopic surgery (grade 2a) or required endoscopic re-treatment (grade 2b); and grade 3 complications included incidents requiring open or laparoscopic surgery. RESULTS The stones were completely removed in 1,067 (88.3%) patients after primary procedure by either simple extraction or after fragmentation. The overall incidence of intraoperative complications was 12.6%. The most common complications were proximal stone migration (3.9%), mucosal injury (2.8%), bleeding (1.9%), inability to reach stone (1.8%), malfunctioning or breakage of instruments (0.8%), ureteral perforation (0.8%) and ureteral avulsion (0.16%). According to modified Satava classification system, there were 4.5% grade 1; 4.4% grade 2a; 3.2% grade 2b; and 0.57% grade 3 complications. CONCLUSION We think that modified Satava classification is a quick and simple system for describing the severity of intraoperative URS complications and this grading system will facilitate a better comparison for the surgical outcomes obtained from different centers.
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15
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Warmerdam GJJ, De Laet K, Wijn RPWF, Wijn PFF. Treatment options for active removal of renal stones. J Med Eng Technol 2012; 36:147-55. [DOI: 10.3109/03091902.2012.660797] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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Rajamahanty S, Grasso M. Flexible ureteroscopy update: indications, instrumentation and technical advances. Indian J Urol 2011; 24:532-7. [PMID: 19468513 PMCID: PMC2684394 DOI: 10.4103/0970-1591.44263] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Retrograde ureteroscopy has recently gained a broadened indication for use from diagnostic to a variety of complex minimally invasive therapies. This review aims to look at the recent advances in the instrumentation and accessories, the widened indications of its use, surgical techniques and complications. With minimization of ureteroscopic instruments manufacturers are challenged to develop new, smaller and sturdier instruments that all will also survive the rigors of surgical therapy.
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17
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Abstract
Retrograde exploration of the ureter and kidneys is currently a widely used and well-established procedure to deal with problems of a diagnostic and therapeutic nature with reduced invasiveness. The process of miniaturizing the instruments combined with the steady improvement in video quality has continuously amplified its potential applications, maintaining the procedure safe and rapid. During an operation, however, unexpected events may condition a change to the programme or determine the onset of even more serious complications. Our aim is to analyze such events and complications and recommend potential solutions to prevent and/or deal with such happenings.
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Affiliation(s)
- Alessandro D'Addessi
- Urology Department, Catholic University School of Medicine, Rome, Italy. adaddessi @ rm.unicatt.it
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18
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19
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Semirigid ureteroscopy for ureteral stones: a multivariate analysis of unfavorable results. J Urol 2009; 181:1158-62. [PMID: 19152940 DOI: 10.1016/j.juro.2008.10.167] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2008] [Indexed: 11/23/2022]
Abstract
PURPOSE We determined the factors predicting unfavorable results of semirigid ureteroscopy for ureteral calculi. MATERIALS AND METHODS We reviewed the computerized files of 841 patients who underwent a total of 908 ureteroscopic procedures for ureteral stones from January 2003 through December 2006. A semirigid 6/7.5Fr ureteroscope was used in pediatric patients and an 8/10Fr or 8.5/11.5Fr ureteroscope was used in adults. Patients with favorable results were those who became stone-free after a single ureteroscopic procedure without any complications. They were compared with patients who had unfavorable results using univariate (chi-square and t tests) and multivariate (logistic regression) statistical tests to identify risk factors for unfavorable results. RESULTS The study included 567 males and 274 females with a mean age of 48.5 years (range 2 to 81). The complication rate was 6.7% (61 procedures). The stone-free rate after a single ureteroscopic intervention was 87% (791 procedures). Favorable results were documented in 751 procedures (82.7%). Significant factors for unfavorable results were proximal ureteral stones, ureteroscopy done by surgeons other than experienced endourologists, stone impaction and stone width (relative risk 4, 2.5, 1.8 and 1.2, respectively). CONCLUSIONS Semirigid ureteroscopy is a safe and highly effective treatment modality for ureteral stones.
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Abstract
OBJECTIVE An update on ureteroscopy with focus on current technology and newer instrumentation is presented. METHODS A literature search through Medline-indexed journals as well as personal comments are included in this review. Topics such as new semirigid and flexible ureteroscopes, lasers, ureteral access sheats, wires and stone extraction devices are outlined. RESULTS Thanks to the continuous advances of technology and miniaturization of instruments, ureteroscopy is an ever-expanding field. A clear outline of the available instruments and techniques with reference to published results catches the status of this dynamic field. CONCLUSIONS Urologists are faced with a host of new products related to ureteroscopy every year. This review serves to identify the most useful and proven advances in the field and helps in selecting the equipment needed for a successful minimally invasive approach to upper urinary tract pathologies.
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Affiliation(s)
- Maurizio Buscarini
- Division of Urology and Renal Transplantation, Oregon Health and Science University, Portland, OR, USA.
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21
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Abstract
The ureteral access sheath (UAS) was introduced as a means of passing a flexible ureteroscope. Although the device was initially lauded for its ability to facilitate ureteroscopic access, passage was difficult and risked ureteral injury, and the UAS fell out of favor until the development of a new generation of devices that was easier to insert. The UAS should be advanced under fluoroscopy over a stiff guidewire, and the surgeon should ensure copious hydration of all inner and outer surfaces. Use of the UAS is purported to improve irrigant flow and visibility. The UAS can induce transient ureteral ischemia and promote an acute inflammatory response, but it also prevents potentially harmful elevations in intrarenal pressure. Unequivocal data are not yet available to suggest that UAS use during ureteroscopy protects or harms the upper urinary tract. The UAS also has the potential to improve stone-free rates by allowing passive egress or active retrieval of fragments. A large prospective study is needed to unequivocally determine if UAS use is superior in terms of stone-free rates. Cost studies reported to favor UAS use, although a formal cost-effectiveness analysis has not been performed. Further study is needed before routine use of the UAS can be recommended.
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Affiliation(s)
- Joshua M Stern
- Department of Urology, The University of Texas Southwestern Medical Center, Dallas, Texas, USA
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22
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Knoll T, Alken P. [Ureterorenoscopy: yesterday, today, tomorrow]. Urologe A 2006; 45 Suppl 4:185-6. [PMID: 16927083 DOI: 10.1007/s00120-006-1183-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
- T Knoll
- Urologische Klinik, Klinikum Mannheim gGmbH, Theodor-Kutzer-Ufer 1-3, 68167 Mannheim.
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23
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de la Rosette JJMCH, Skrekas T, Segura JW. Handling and prevention of complications in stone basketing. Eur Urol 2006; 50:991-8; discussion 998-9. [PMID: 16530928 DOI: 10.1016/j.eururo.2006.02.033] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2005] [Accepted: 02/10/2006] [Indexed: 10/25/2022]
Abstract
OBJECTIVE To review the incidence, risk factors, and treatment options of intraoperative and postoperative complications of stone basketing in urology with emphasis on certain principles that must be upheld to prevent those complications. METHODS A literature search was performed using the MEDLINE database on stone basketing between 1970 and 2005. RESULTS Iatrogenic trauma due to retrieval of a stone is well known but the exact incidence is difficult to ascertain. Rarely, stone basketing can cause major trauma to the ureter, such as avulsion or intussusception, requiring open or laparoscopic intervention for ureteral continuity restoration. Mucosal abrasion, ureteral perforation, and stricture formation have also been described as complications of stone basketing. Occasionally, the engaged or broken basket can provoke anxiety even for experienced urologists. Factors that increase the risk of complications, strategies for repair, and techniques for prevention are discussed extensively. CONCLUSION Infrequent, surgical misadventures during stone basketing can occur and must be treated appropriately. Careful attention to instrument selection and surgical techniques and awareness of risk factors and type and site of potential injury are essential to reduce these complications.
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Abstract
INTRODUCTION There has been a steady increase in the number of ureteroscopic laser lithotripsy. In addition to its soft tissue applications Holmium:YAG laser has also been found an excellent intracorporeal lithotripter for all kinds of stones. We here present the results of patients treated with Holmium:YAG laser lithotripsy in our clinic. METHODS Between June 1997 and December 2002, 205 patients with a diagnosis of ureteric calculi were treated with ureteroscopy using Holmium:YAG laser as an intracorporeal lithotriptor. The stones were localized in the distal ureter in 158 patients (77), middle and proximal ureter in 47 patients (23). Stones ranged in size from 5 x 5 mm to 20 x 10 mm and the operation time was about 35 minutes (ranged 25-65 minutes). Follow-up evaluations have done at first and third months. RESULTS The ureteral stone could not be reached in 10 patients (4.8). Stone fragmentation or removal was accomplished in all other patients. Four patients (1.9) had proximal migration of the fragments and later treated with extra corporeal shock wave lithotripsy, and three patients (1.5) had ureteral perforation. They were managed by double J stent placement. Two of the patients had ureteral obstruction on the third month of procedure. One of the patients was treated with open surgery. For the other one, ureteroscopic balloon dilatation was performed and catheterized by double J stent and there wasn't any complication after the removal of stent. CONCLUSIONS Ureteroscopic Holmium:YAG laser lithotripsy is a safe, technically feasible and efficacious treatment for ureteral stones.
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Affiliation(s)
- Y Ilker
- Department of Urology, Medical Faculty, Marmara University School of Medicine, Turkey
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Abstract
Ureteroscopy has undergone a dramatic evolution over the last two decades. Although ureteroscopic injury is the most common cause of ureteral trauma because of the large number of ureteroscopic procedures performed, improvements in instrumentation and technique have resulted in a reduced incidence of serious complications. Despite significant technologic advances, however, surgical misadventures still occur, some of which have lasting consequences. Careful attention to instrument selection and surgical technique are critical to reduce untoward events related to ureteroscopy. As such, adverse sequelae associated with ureteroscopy should be related to the underlying pathology itself rather than to the treatment.
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Affiliation(s)
- D Brooke Johnson
- Division of Urology, University of Utah Health Sciences Center, 50 North Medical Drive, Salt Lake City, UT 84132, USA
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Abstract
Ureterorenoscopy (URS) is a vital procedure in the armamentarium of the modern-day urologist for the management of ureteral and renal pathology. With advances in ureteroscopic design and the introduction of short-acting anesthetics, URS can now be performed efficiently with high patient satisfaction and minimal posteroperative recovery time. Recently, URS under local anesthesia, with or without sedation, has become a viable option for a high percentage of correctly selected patients. For those patients who then require deeper sedation or general anesthesia, anesthesia can be induced quickly with the new agents such as remifentanil, propofol, and desflurane, without a prolonged postoperative recovery period.
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Affiliation(s)
- Peter A Cybulski
- Division of Urology, St. Michael's Hospital, University of Toronto, 61 Queen Street East, Toronto, Ontario M5C 2T2, Canada
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27
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Bagley DH, Kuo RL, Zeltser IS. An update on ureteroscopic instrumentation for the treatment of urolithiasis. Curr Opin Urol 2004; 14:99-106. [PMID: 15075838 DOI: 10.1097/00042307-200403000-00009] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE OF REVIEW Ureteroscopic instruments, both endoscopic and working devices, continue to evolve. Changes in instrumentation have necessitated concurrent modifications in ureteroscopic techniques over the years. The safety and efficacy of the ureteroscopic approach for the treatment of renal and ureteral calculi, however, have continued to improve. RECENT FINDINGS This review emphasizes the recent advances in the major groups of instruments employed for ureteroscopy. Among the endoscopic instruments, the flexible ureteroscopes have undergone the most notable advances, benefiting from greatly improved deflection and durability. Progress has been made in adjunctive instruments as well. Current stone retrieval devices composed of nitinol-based wire technology are able to easily secure fragments from the most peripheral calices. The holmium laser is a versatile device with proven safety and effectiveness as an endoscopic lithotrite. SUMMARY The availability and coordinated use of the latest ureteroscopic instruments have resulted in better treatment outcomes, thus expanding the use of ureteroscopy as a first-line option for the treatment of calculi in appropriate cases. Urologists should be familiar with currently available instrumentation in order to optimize their equipment.
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Affiliation(s)
- Demetrius H Bagley
- Department of Urology, Jefferson Medical College, Thomas Jefferson University, 1025 Walnut Street, Room 1108, Philadelphia, PA 19107, USA.
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Bilgasem S, Pace KT, Dyer S, Honey RJD. Removal of asymptomatic ipsilateral renal stones following rigid ureteroscopy for ureteral stones. J Endourol 2003; 17:397-400. [PMID: 12965066 DOI: 10.1089/089277903767923182] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
PURPOSE To evaluate the feasibility and outcome of flexible ureteroscopic removal of small (<1-cm) asymptomatic renal stone(s) following rigid ureteroscopy for ureteral stones. PATIENTS AND METHODS Ten female and nineteen male patients underwent rigid ureteroscopy and holmium lasertripsy for removal of ureteral stone(s). All had asymptomatic renal stone(s) on the same side, which were then removed using flexible ureteroscopy. The renal stones were either removed intact with a tipless Nitinol basket or fragmented with the laser to small pieces (<2 mm), with basket removal of larger fragments. The number and size of stones, total operative time, added time needed for flexible ureteroscopy, and intraoperative and postoperative complications were recorded. Follow-up at 1 month included a plain abdominal film and renal ultrasonography or noncontrast CT scan. RESULTS Fifty-six renal stones with a mean size of 5.7 mm were treated. Fourteen patients had stones on the right side, and 15 had stones on the left. The mean total operative time was 56.5 minutes, with a mean added time of 16.7 minutes for flexible ureteroscopy. Stones were removed intact in 18 patients and fragmented in 8 patients, resulting in an immediate success rate of 90%. There were three failures. One-month follow-up confirmed all patients were either stone-free or had residual fragments <2 mm in diameter, with no new-onset hydronephrosis. CONCLUSIONS Removal of small asymptomatic renal stones at the time of ureteroscopy for ureteral stones appears safe and effective and requires little additional operative time.
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Affiliation(s)
- Solieman Bilgasem
- Division of Urology, St. Michael's Hospital, University of Toronto, Toronto, Ontario, Canada
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Delvecchio FC, Auge BK, Brizuela RM, Weizer AZ, Silverstein AD, Lallas CD, Pietrow PK, Albala DM, Preminger GM. Assessment of stricture formation with the ureteral access sheath. Urology 2003; 61:518-22; discussion 522. [PMID: 12639636 DOI: 10.1016/s0090-4295(02)02433-0] [Citation(s) in RCA: 100] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
OBJECTIVES To analyze the long-term incidence of ureteral stricture formation in a series of patients in whom a new-generation ureteral access sheath was used. A new generation of ureteral access sheaths has been developed to facilitate ureteroscopic procedures. However, some have questioned their safety and whether the device might cause significant ureteral trauma. METHODS Between September 1999 and July 2001, 150 consecutive ureteroscopic procedures with adjunctive use of an access sheath were performed. A retrospective chart review to April 2002 was done. Of the 150 patients, 130 underwent ureteroscopy for ureteral stones. Patients who underwent endoureterotomy or treatment of transitional cell carcinoma were excluded from this analysis. Sixty-two patients had follow-up greater than 3 months and were included in the analysis. Overall, 71 ureteroscopic procedures were performed, with 9 patients undergoing multiple procedures. Ninety-two percent of the patients had pathologic findings above the iliac vessels. The average patient age was 45.3 years (range 17 to 76), and 70% and 30% of the patients were male and female, respectively. The mean clinical follow-up was 332 days (range 95 to 821), and follow-up imaging was performed within 3 months after ureteroscopy in all patients. RESULTS The 10/12F access sheath was used in 8 ureteroscopic procedures (11.2%), the 12/14F access sheath in 56 (78.9%), and the 14/16F access sheath in 7 (9.8%). One stricture was identified on follow-up imaging of 71 procedures performed, for an incidence of 1.4%. The patient developed the stricture at the ureteropelvic junction after multiple ureteroscopic procedures to manage recurrent struvite calculi. The access sheath did not appear to be a contributing factor. CONCLUSIONS The results of our series indicate that the ureteral access sheath is safe and beneficial for routine use to facilitate flexible ureteroscopy. However, awareness of the potential ischemic effects with the use of unnecessarily large sheaths for long periods in patients at risk of ischemic injury should be considered. We advocate the routine use of the device for most flexible ureteroscopic procedures proximal to the iliac vessels.
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Affiliation(s)
- Fernando C Delvecchio
- Comprehensive Kidney Stone Center, Division of Urology, Department of Surgery, Duke University Medical Center, Durham, North Carolina 27710, USA
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Abstract
Endoscopic lithotripsy is an essential part of the armamentarium at any complete stone treatment center. It is first-line therapy for complicated upper urinary tract calculi and for patients who fail primary extracorporeal shock wave lithotripsy. In the presented series, ureteroscopy is defined as a safe and particularly effective treatment for upper urinary tract calculi. Endoscope miniaturization, the Holmium laser, and refined surgical technique have positive results. Complications are less frequent today, even with in the most complex large stone burdens being addressed in a retrograde ureteroscopic way.
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Affiliation(s)
- M Grasso
- Department of Urology, New York University School of Medicine, New York, USA.
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31
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Abstract
The indications for ureteroscopic lithotripsy have increased with endoscope miniaturization and powerful, precise endoscopic lithotrites like the holmium: yttrium-aluminum-garnet laser. Successful ureteropyeloscopic treatment with the currently available instrumentation and techniques is independent of the size, composition, and location of stones in the upper urinary tract. Extracorporeal shockwave lithotripsy maintains a major role in treating uncomplicated, moderately sized upper urinary tract calculi. Complex upper urinary tract calculi, however, are best treated endoscopically. In addition, the endoscopic treatment of ureteral calculi is efficacious and definitive, albeit more invasive than extracorporeal shock wave lithotripsy.
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Affiliation(s)
- M Grasso
- Department of Urology, New York University School of Medicine, New York, USA.
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32
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Abstract
OBJECTIVES To evaluate our experience in treating 155 patients with upper urinary tract calculi ureteroscopically. The treatment of urinary calculi has remained the most frequent application of ureteroscopy. Miniaturization of semirigid and flexible ureteroscopes has permitted easier access to calculi throughout the urinary tract. METHODS Ureteroscopic stone treatment was attempted in 155 patients with upper urinary tract calculi between November 1995 and March 1997. Fifty-nine (38.1%) patients had renal calculi, 82 (52.9%) ureteral, and 14 (9%) had both renal and ureteral calculi. Both semirigid and flexible ureteroscopes were used for treatment (rigid alone in 21 [13.5%], flexible in 64 [41.3%], and both rigid and flexible in 70 [45.2%] patients). Lithotripsy was required in 122 (79%) of the patients. The holmium:yttrium-aluminum-garnet laser was used in 113 (92.6%) of these patients. RESULTS All patients with ureteral calculi (29 proximal, 19 mid, and 34 distal) were successfully cleared after one endoscopic procedure except for 1 patient with a proximal ureteral calculus who had a 4-mm residual fragment in the kidney. Of the 59 patients with renal calculi, 47 (79.7%) were totally clear of stones 1 month after treatment. The remaining 12 (20.3%) patients had evidence of residual calculi 3 to 4 mm or less in diameter. In patients with combined renal and ureteral calculi, 1 1 of 14 (78.6%) were rendered stone free. The remaining 3 (21.4%) patients had evidence of residual calculi 4 mm in diameter. Overall, 95% of the patients were treated in an outpatient setting. Morbidity was low, with no evidence of stricture. CONCLUSIONS Ureteroscopy and laser lithotripsy in experienced hands are a safe and reliable method for the treatment of ureteral and even intrarenal calculi.
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Affiliation(s)
- E R Tawfiek
- Department of Urology, Jefferson Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania 19107, USA
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Beaghler M, Poon M, Ruckle H, Stewart S, Weil D. Complications employing the holmium:YAG laser. J Endourol 1998; 12:533-5. [PMID: 9895258 DOI: 10.1089/end.1998.12.533] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
We report the operative and early postoperative complications and limitations in 133 patients treated with the holmium laser. Complications included urinary tract infection (N = 3), postoperative bradycardia (1), inverted T-waves (1), intractable flank pain (1), urinary retention (1), inability to access a lower-pole calix with a 365-microm fiber (9), stone migration (5), and termination of procedure because of poor visibility (2). No ureteral perforations or strictures occurred, and no complications were directly attributable to the laser. The holmium laser was capable of fragmenting all urinary calculi in this study. In our initial experience, the holmium laser is safe and effective in the treatment of urinary pathology. Use of laser fibers larger than 200 microm occasionally limits deflection of the endoscope into a lower-pole or dependent calix.
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Affiliation(s)
- M Beaghler
- Division of Urology, Loma Linda University School of Medicine, California 92354, USA
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34
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35
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Affiliation(s)
- MICHAEL GRASSO
- From the Department of Urology, New York University, New York, New York, and Thomas Jefferson University, Philadelphia, Pennsylvania
| | - DEMETRIUS BAGLEY
- From the Department of Urology, New York University, New York, New York, and Thomas Jefferson University, Philadelphia, Pennsylvania
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36
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Affiliation(s)
- MICHAEL D. FABRIZIO
- Department of Urology, Jefferson Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania
| | - ASHISH BEHARI
- Department of Urology, Jefferson Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania
| | - DEMETRIUS H. BAGLEY
- Department of Urology, Jefferson Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania
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Elashry OM, Elbahnasy AM, Rao GS, Nakada SY, Clayman RV. Flexible ureteroscopy: Washington University experience with the 9.3F and 7.5F flexible ureteroscopes. J Urol 1997; 157:2074-80. [PMID: 9146583 DOI: 10.1016/s0022-5347(01)64677-9] [Citation(s) in RCA: 51] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
PURPOSE Recent advances in the design of flexible ureteroscopes have resulted in smaller caliber instruments. We review our experience with the smaller flexible ureteroscopes, and compare the efficacy and efficiency of the newer 7.5F to the standard 9.3F flexible instruments. MATERIALS AND METHODS Between January 1991 and 1995, 69 male and 41 female patients (mean age 57 years, range 16 to 91) underwent 116 retrograde flexible ureteroscopic procedures for a variety of diagnostic and therapeutic indications. A 9.3F ureteroscope (group 1) was used in 71 patients and a 7.5F instrument (group 2) was used in 39. RESULTS Patients in group 2 received sedation analgesia significantly more often than those in group 1 (56 versus 35%, p = 0.04). Active dilation of the ureteral orifice was required less often in group 2 (22.5%) than in group 1 (58%, p < or = 0.05). The total success rate for stone management, and diagnosis and/or treatment of an upper urinary tract lesion was 98.3 and 100%, respectively, in group 1, and 90 and 100%, respectively, in group 2 (p = 0.17). Of the 71 patients in group 1, 17 (24%) were treated on an outpatient basis, compared to 14 of 39 (49%) in group 2 (p = 0.16). No intraoperative or postoperative major complications were encountered in either group. Group 2 required less postoperative analgesia (p = 0.05). No ureteral stricture occurred in either group at an average followup of 9.5 months postoperatively (range 2 to 35). CONCLUSIONS For ureteral and renal pathological conditions the 7.5F ureteroscope is as effective as the 9.3F instrument diagnostically and therapeutically. The 7.5F ureteroscope usually can be used with sedation analgesia. Also, the smaller 7.5F ureteroscope is associated with less need for active ureteral dilation, minimal postoperative discomfort and a brief hospital stay.
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Affiliation(s)
- O M Elashry
- Department of Surgery (Division of Urologic Surgery), Washington University School of Medicine, St. Louis, Missouri 63110, USA
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39
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Abstract
Advances in ureteroscope and working instrument designs now allow the treatment of a variety of upper urinary tract disorders in a minimally invasive fashion. This field has benefited from the close cooperation between endourologists, engineers, and manufactures. Continued cooperation should result in even further improvements in ureteroscopic instrumentation. This article also presents the development of flexible and rigid ureteroscopes and working instruments. Knowledge of these features can assist the urologist in choosing the most appropriate tool for different ureteroscopic tasks.
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Affiliation(s)
- M J Conlin
- Division of Urology, Oregon Health Sciences University School of Medicine, Portland, USA
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40
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Abstract
Management of calyceal calculi has changed dramatically during the past 20 years. Minimally invasive techniques virtually have replaced open surgical stone removal. Even large and complex calyceal calculi may be treated effectively with these minimally invasive techniques. Although open surgical stone removal is performed infrequently, a clear understanding of the subtle renal anatomy aids the urologist in more effectively treating patients with calyceal calculi and in limiting surgical complications.
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Affiliation(s)
- T D Cohen
- Comprehensive Kidney Stone Center, Duke University Medical Center, Durham, North Carolina, USA
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Harmon WJ, Sershon PD, Blute ML, Patterson DE, Segura JW. Ureteroscopy: current practice and long-term complications. J Urol 1997; 157:28-32. [PMID: 8976208 DOI: 10.1016/s0022-5347(01)65272-8] [Citation(s) in RCA: 287] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
PURPOSE We compared a current cohort of patients who underwent ureteroscopy to a cohort from the early 1980s to determine changes in success, indications and long-term complications of the procedure. MATERIALS AND METHODS A chart review was performed of 194 patients who underwent 209 ureteroscopic procedures at our institution during 1992. This group was then statistically compared to 317 patients who underwent 346 ureteroscopies between 1982 and 1985. RESULTS The current indications for ureteroscopy were calculus extraction (67% of the cases), diagnosis (28%) and stent manipulation (5%). These indications differed from those of the early series, in which 84% of all ureteroscopies were performed for calculus extraction and 16% for diagnosis. Overall ureteroscopic success rate increased from 86 to 96% (p < 0.001). Success of stone extraction improved from 89 to 95% (p = 0.08, distal success rate 95 to 97% and proximal success rate 72 to 77%). Success of diagnostic inspections increased from 73 to 98% (p < 0.001). In the early series failure was usually due to inability to traverse the ureter (54% of the cases), while currently failure is due almost exclusively to impassable ureteral strictures (63%). The overall complication rate decreased from 20 to 12% (p = 0.01) and the rate of significant complications decreased from 6.6 to 1.5% (p < 0.05). Clinical followup (mean 36 months) for all patients and radiological followup (mean 9.8 months) for 67% of eligible patients detected only 1 ureteral stricture. The remaining patients were asymptomatic after the ureteroscopic procedure. CONCLUSIONS Improvements in ureteroscope design, accessories and technique have led to a significant increase in the success of diagnostic and therapeutic ureteroscopy while decreasing morbidity. Outpatient ureteroscopic stone extraction, particularly for distal ureteral calculi, is almost uniformly successful with low morbidity. The long-term complication rate of ureteroscopy is 0.5%.
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Affiliation(s)
- W J Harmon
- Department of Urology, Mayo Clinic, Rochester, Minnesota, USA
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Grasso M, Beaghler M, Loisides P. The case for primary endoscopic management of upper urinary tract calculi: II. Cost and outcome assessment of 112 primary ureteral calculi. Urology 1995; 45:372-6. [PMID: 7879330 DOI: 10.1016/s0090-4295(99)80003-x] [Citation(s) in RCA: 83] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
OBJECTIVES To compare extracorporeal shock-wave lithotripsy (ESWL) with endoscopic lithotripsy to establish the more efficacious and cost-effective treatment for ureteral calculi. METHODS The records of 112 patients with primary ureteral calculi treated at one center with either ESWL or endoscopic lithotripsy were retrospectively reviewed. Follow-up data at 1 and 3 months were obtained in all patients. Success was defined as complete clearance of a stone burden in the endoscopy group. In the ESWL group patients with a residual, asymptomatic 2-mm fragment were also considered successful treatments. The number of auxiliary procedures, retreatments, postoperative office visits, and imaging studies required before a patient was considered stone free was defined. The impact of these variables on global costs was carefully reviewed. RESULTS Patients with ureteral calculi primarily treated with ESWL or ureteroscopic lithotripsy had stone-free rates after a single session of 45% versus 95% at 1-month follow-up, and 62% versus 97% at 3-month follow-up. Retreatment and auxiliary procedure rates were significantly higher in the ESWL group (31% versus 3%). The mean number of postoperative visits and imaging studies until a patient was stone free was also higher in the ESWL group (2.07 versus 1.13). Operative treatment costs were similar for both modalities, but overall costs weighed heavily against ESWL. CONCLUSIONS ESWL remains the treatment of choice for moderately sized, uncomplicated renal calculi. In skilled hands, ureteroscopic lithotripsy is by far the most expeditious and cost-effective means of clearing a ureteral stone burden.
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Affiliation(s)
- M Grasso
- Loma Linda University Medical Center, California
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46
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Abstract
OBJECTIVES To determine the optimal instruments and techniques for biopsy of upper urinary tract lesions through the small working channel in flexible and small semirigid ureteroscopes. METHODS Urinary tract filling defects and other lesions were accessed with rigid or flexible ureteroscopy and biopsies were done using one or more devices: a 3 F cup biopsy forceps, 2.5 F and 3 F baskets, 2.5 F and 3 F graspers, 3 F snare, brush, and aspiration catheters. All samples, including the cup forceps samples, were sent for cytopathologic study, with those containing grossly visible tissue particles processed as a cell block. Only those specimens reported definitely positive or negative were considered diagnostic, whereas the others were grouped as nondefinitive. Not all sampling techniques could be used in every patient because of the size of the lesion and the technical limitations, including bleeding and instrument position during biopsy. RESULTS There were 55 procedures in 43 patients. The indications included hematuria, filling defect, abnormal cytology, and periodic surveillance. A basket was used in 22 procedures and gave unequivocal results in 15. The other samples were equivocal, nondiagnostic, or unsuitable. The biopsy forceps provided a definitive result in 16 of 21 samples and the grasper was definitive in 5 of 6 samples. We could not obtain a suitable specimen using a snare in 2 cases and the brush gave a definitive result in only 5 of 11 cases. Samples of aspirate and washings were definitive in less than 50% of instances but detected some tumors for which other techniques were equivocal. CONCLUSIONS For the best results, the largest biopsy specimen possible should be obtained. Aspiration or wash alone is often not diagnostic but can give a diagnosis in some patients. Tissue sampling devices, such as the forceps and basket, have an advantage in obtaining a larger sample. Cytopathologic techniques are particularly useful for handling and interpreting the small specimens obtained with ureteroscopic biopsy techniques.
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Affiliation(s)
- O M Abdel-Razzak
- Department of Urology, Thomas Jefferson University, Philadelphia, Pennsylvania
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47
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Preminger GM. Technique versus technology: what is the most appropriate method for the removal of ureteral calculi. J Urol 1994; 152:66-7. [PMID: 8201690 DOI: 10.1016/s0022-5347(17)32817-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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Abstract
Ureteroscopy is used in the diagnosis and treatment of many urological conditions. The technique of ureteroscopy has been simplified by the introduction of smaller ureteroscopes and by an increase in the variety of accessory instruments that can be passed through the ureteroscope. Despite those advances, recent reports indicate that ureteroscopy is still generally considered an inpatient procedure. Since 1987 we have performed most of our ureteroscopic procedures on an outpatient basis. We reviewed the records of 176 patients who underwent ureteroscopy between 1988 and 1990, of whom 84 (47.7%) underwent extracorporeal shock wave lithotripsy with the same anesthesia. We treated 134 patients (76.1% of the total group) as outpatients, while 20 (11.4%) chose to remain in the hospital overnight for personal reasons, 10 (5.7%) required additional surgery after ureteroscopy and 12 (6.8%) required hospitalization for preexisting medical problems or for problems that resulted from ureteroscopy. Of the 134 patients who were discharged from the hospital on the day of ureteroscopy only 4 (3.0%) required rehospitalization. The addition of extracorporeal shock wave lithotripsy to ureteroscopy during the same period of anesthesia did not increase the need for hospitalization. Ureteroscopy should be considered an outpatient procedure. The decision to hospitalize a patient after ureteroscopy should be based on preexisting medical problems or on problems that result from ureteroscopy. Routine hospitalization for observation is unnecessary.
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Affiliation(s)
- T E Wills
- Department of Surgery, University of Alabama at Birmingham 35294
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49
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Grasso M, Bagley D. A 7.5/8.2 F actively deflectable, flexible ureteroscope: a new device for both diagnostic and therapeutic upper urinary tract endoscopy. Urology 1994; 43:435-41. [PMID: 8154064 DOI: 10.1016/0090-4295(94)90226-7] [Citation(s) in RCA: 89] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
OBJECTIVE To develop and employ in a prospective fashion a small-diameter, actively deflectable, flexible ureteroscope that could be easily placed into the upper urinary tract and would increase the overall therapeutic potential for this class of endoscope. METHODS A small-diameter, actively deflectable flexible ureteroscope was recently employed in clinical trials at two university centers. Improvements in fiberoptic engineering allowed endoscope miniaturization (7.5 F tip and 8.2 F shaft) while maintaining a relatively large (3.6 F) centrally located working channel. A variety of design modifications were employed through various prototype stages. Mechanical parameters included maximizing two-way active deflection, adequate secondary deflection allowing access to the lower pole caliceal system, and maintaining a sturdy (nonbuckling) durometer. RESULTS The 7.5 F flexible ureteroscope was employed in sixty-seven procedures (64 patients). Therapeutic rather than purely diagnostic maneuvers made up the majority of procedures. Thirty-one upper ureteral, renal pelvic, or caliceal calculi were treated with a variety of endoscopic lithotriptors placed through the ureteroscope. Six patients underwent both biopsy and endoscopic treatment of superficial papillary transitional cell malignancies. Retrograde endopyelotomy, incision or dilation of ureteral strictures, extraction of renal pelvic foreign bodies, and endoscopic access and treatment of obstructed caliceal diverticula were other applications. Endoscopic access to the upper urinary tract rarely required active intramural ureteral dilation (14%). Excluding patients with prior ureteral stents or those who underwent rigid distal third ureteral endoscopy prior to flexible proximal ureteroscopy, 31 patients (48%) required no intramural ureteral dilation prior to placing the endoscope. CONCLUSIONS The increased therapeutic potential observed with the 7.5 F actively deflectable, flexible ureteroscope opens a variety of upper urinary tract pathologic states to minimally invasive (endoscopic) treatments.
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Affiliation(s)
- M Grasso
- Department of Urology, Loma Linda University Medical Center, California
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