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Gul T, Laymon M, Alrayashi M, Abdelkareem M, Salah M. Successful treatment of staghorn stones with flexible ureteroscopy and thulium fiber laser (TFL) lithotripsy: initial experience with 32 cases. Urolithiasis 2024; 52:102. [PMID: 38937284 PMCID: PMC11211131 DOI: 10.1007/s00240-024-01598-9] [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: 12/30/2023] [Accepted: 06/12/2024] [Indexed: 06/29/2024]
Abstract
Purpose To investigate the efficacy and safety of flexible ureteroscopy with thulium fiber laser lithotripsy for management of renal staghorn stones. Materials and Methods Thirty-two patients with staghorn stones were recruited. Stone characteristics including: width, length, volume and density were analyzed. Ablation speed, laser efficacy and laser activity were recorded. The primary outcome was to assess stone free rate after the procedure using spiral CT scan. Results The median stone volume was 7339 (3183–53838) mm3. Median operative and lasing time were 135 (70–200) and 117 (50–180) minutes, respectively. The mean total energy delivered was 63.9 ± 30 KJ with a median ablation speed of 1.3 (0.5–4.9) mm3/sec. Mean laser efficacy was 7.5 ± 3.6 Joules/mm3. A total of 12 complications occurred in 8 patients (25%). The median hospital stay was 7 (3.5–48) hours and 30 patients (93.7%) were discharged on the same day of surgery. After the first session, seventeen patients (53%) were stone free with no residual fragments while six (19%) patients had residuals £ 2 mm. Nine patients (28%) had residuals > 2 mm with median residual size of 4 (3–9) mm. A second intervention was required in 4 cases.The overall stone free rate after completion of treatment was 65.6%. Conclusion Flexible ureteroscopy with thulium fiber laser lithotripsy is a safe and effective treatment option for staghorn stones with stone free rate comparable to standard PCNL with advantages of minimal morbidity, minimal blood loss and shorter hospital stay.
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Affiliation(s)
- Tawiz Gul
- Urology Section, Surgery Department, Hazm Mebaireek general hospital, Hamad medical corporation, Doha, Qatar.
- College of Medicine, Qatar University, Doha, Qatar.
| | - Mahmoud Laymon
- Urology and Nephrology center, Mansoura University, Mansoura, Egypt.
| | - Maged Alrayashi
- Urology Section, Surgery Department, Hazm Mebaireek general hospital, Hamad medical corporation, Doha, Qatar
| | - Mohamed Abdelkareem
- Urology Section, Surgery Department, Hazm Mebaireek general hospital, Hamad medical corporation, Doha, Qatar
| | - Morshed Salah
- Urology Section, Surgery Department, Hazm Mebaireek general hospital, Hamad medical corporation, Doha, Qatar
- College of Medicine, Qatar University, Doha, Qatar
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Hou J, Wen X, Qu G, Chen W, Xu X, Wu G, Ji R, Wei G, Liang T, Huang W, Xiong L. A multicenter study on the application of artificial intelligence radiological characteristics to predict prognosis after percutaneous nephrolithotomy. Front Endocrinol (Lausanne) 2023; 14:1184608. [PMID: 37780621 PMCID: PMC10541026 DOI: 10.3389/fendo.2023.1184608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/12/2023] [Accepted: 08/30/2023] [Indexed: 10/03/2023] Open
Abstract
Background A model to predict preoperative outcomes after percutaneous nephrolithotomy (PCNL) with renal staghorn stones is developed to be an essential preoperative consultation tool. Objective In this study, we constructed a predictive model for one-time stone clearance after PCNL for renal staghorn calculi, so as to predict the stone clearance rate of patients in one operation, and provide a reference direction for patients and clinicians. Methods According to the 175 patients with renal staghorn stones undergoing PCNL at two centers, preoperative/postoperative variables were collected. After identifying characteristic variables using PCA analysis to avoid overfitting. A predictive model was developed for preoperative outcomes after PCNL in patients with renal staghorn stones. In addition, we repeatedly cross-validated their model's predictive efficacy and clinical application using data from two different centers. Results The study included 175 patients from two centers treated with PCNL. We used a training set and an external validation set. Radionics characteristics, deep migration learning, clinical characteristics, and DTL+Rad-signature were successfully constructed using machine learning based on patients' pre/postoperative imaging characteristics and clinical variables using minimum absolute shrinkage and selection operator algorithms. In this study, DTL-Rad signal was found to be the outstanding predictor of stone clearance in patients with renal deer antler-like stones treated by PCNL. The DTL+Rad signature showed good discriminatory ability in both the training and external validation groups with AUC values of 0.871 (95% CI, 0.800-0.942) and 0.744 (95% CI, 0.617-0.871). The decision curve demonstrated the radiographic model's clinical utility and illustrated specificities of 0.935 and 0.806, respectively. Conclusion We found a prediction model combining imaging characteristics, neural networks, and clinical characteristics can be used as an effective preoperative prediction method.
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Affiliation(s)
- Jian Hou
- Division of Urology, Department of Surgery, The University of Hongkong-Shenzhen Hosipital, ShenZhen, China
| | - Xiangyang Wen
- Division of Urology, Department of Surgery, The University of Hongkong-Shenzhen Hosipital, ShenZhen, China
| | - Genyi Qu
- Department of Urology, Zhuzhou Central Hospital, Zhuzhou, China
| | - Wenwen Chen
- Department of Radiology, Zixing First People's Hospital, Chenzhou, China
| | - Xiang Xu
- Division of Urology, Department of Surgery, The University of Hongkong-Shenzhen Hosipital, ShenZhen, China
| | - Guoqing Wu
- Division of Urology, Department of Surgery, The University of Hongkong-Shenzhen Hosipital, ShenZhen, China
| | - Ruidong Ji
- Division of Urology, Department of Surgery, The University of Hongkong-Shenzhen Hosipital, ShenZhen, China
| | - Genggeng Wei
- Division of Urology, Department of Surgery, The University of Hongkong-Shenzhen Hosipital, ShenZhen, China
| | - Tuo Liang
- Division of Urology, Department of Surgery, The University of Hongkong-Shenzhen Hosipital, ShenZhen, China
| | - Wenyan Huang
- Division of Urology, Department of Surgery, The University of Hongkong-Shenzhen Hosipital, ShenZhen, China
| | - Lin Xiong
- Division of Urology, Department of Surgery, The University of Hongkong-Shenzhen Hosipital, ShenZhen, China
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3
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Kamal WK, Alhazmy A, Alharthi M, Al Solumany A. Trends of percutaneous nephrolithotomy in Saudi Arabia. Urol Ann 2021; 12:352-359. [PMID: 33776332 PMCID: PMC7992526 DOI: 10.4103/ua.ua_100_19] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2019] [Accepted: 11/07/2019] [Indexed: 11/16/2022] Open
Abstract
Objective: The objective of the study was to present the current practice patterns on percutaneous nephrolithotomy (PCNL) in Saudi Arabia and to compare it with the international patterns and to observe the adherence to the guidelines. Materials and Methods: A survey consisting of 28 questions was sent to urologists working in Saudi Arabia using a Google Forms questionnaire. The questioner covered most aspects of performing PCNL starting from preparing the patient till discharging him. Results: One hundred and thirty-two replied to the survey. Almost 70.2% performed PCNL and 59.1% of them learned PCNL during residency. The access was obtained by the urologists in 80.3% from the participants, 68.2% of them uses fluoroscopic guidance for the puncture. The majority (80.3%) perform PCNL in the prone position. Nearly 69.7% use the balloon dilators and 16.7% use the Amplatz dilators. For kidney drainage, 60.6% place a nephrostomy tube and a double-J stent (DJ stent) together and 4.5% perform tubeless PCNL (DJ stent only). About 45.5% stated that the introduction of flexible ureteroscopy decreased the rate of doing PCNL for >20%. Conclusions: Data obtained from a group of urologists in Saudi Arabia showed that the majority of urologists practicing in Saudi Arabia perform PCNL. They usually learn PCNL during residency. We observe that the majority of urologists attach to the original patterns in PCNL, i.e., they predominantly prefer the prone position and use fluoroscopy to gain the PCNL access. Furthermore, the data showed that new trends in PCNL did not gain a lot of momentum as few practices miniaturized PCNL and tubeless PCNL. The majority use balloon dilators and combined ultrasonic/pneumatic lithotripters. The complication rate encountered by the participants is concomitance with the published international figures. The introduction of flexible ureteroscopy highly decreased the rate of doing PCNL for most urologists.
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Affiliation(s)
| | - Ali Alhazmy
- Department of Urology, King Fahd Hospital, Jeddah, Saudi Arabia
| | - Majed Alharthi
- Department of Urology, King Fahd Hospital, Jeddah, Saudi Arabia
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4
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Chung JW, Ha H, Park DJ, Ha YS, Lee JN, Chun SY, Kwon TG, Kim BS. Efficacy and safety of modified tract dilation technique using simultaneous pulling of proximal and distal ends of a guidewire for percutaneous nephrolithotomy in modified supine position. Investig Clin Urol 2021; 62:186-194. [PMID: 33660446 PMCID: PMC7940847 DOI: 10.4111/icu.20200276] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 09/17/2020] [Accepted: 10/19/2020] [Indexed: 11/18/2022] Open
Abstract
Purpose Recently, the needs for supine percutaneous nephrolithotomy (PCNL) have become more increased because of an easy approach for endoscopic combined intrarenal surgery. However, making a nephrostomy tract during supine PCNL is more difficult than prone position due to movable kidney. To overcome this limitation, we used a modified nephrostomy tract dilation (MTD) technique using guidewire traction. Materials and Methods From January 2014 to June 2019, a total of 259 patients underwent PCNL in the modified supine position. Among them, the MTD technique was performed in 171 patients. For the MTD technique, two hydrophilic guidewires were passed from the nephrostomy tract and brought out through the urethra, then both proximal and distal ends were contralaterally pulled with tension for the easy placement of a fascia-cutting needle and a balloon catheter. We analyzed the efficacy of this technique in comparison with the conventional method. Results Intraoperative radiation exposure time (RET) (68.87 vs. 212.11 s) and hospital stay (5.90 vs. 6.74 days) were significantly shorter, while the success rate (77.2% vs. 63.6%) was significantly higher in the MTD group. Multivariate analysis showed that only the maximal stone diameter (odds ratio [OR], 1.928; 95% confidence interval [CI], 1.314–2.828; p=0.001) and MTD technique (OR, 0.017; 95% CI, 0.007–0.040; p<0.001) were independent factors for predicting short RET (<120 s). Conclusions This study demonstrated that MTD technique can be effectively and safely performed in modified supine position PCNL, and it can be helpful in reducing RET and enhancing success rates.
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Affiliation(s)
- Jae Wook Chung
- Department of Urology, Kyungpook National University Chilgok Hospital, Daegu, Korea
| | - Heon Ha
- Department of Urology, Pohang Semyeong Christianity Hospital, Pohang, Korea
| | - Dong Jin Park
- Department of Urology, Dongguk University Gyeongju Hospital, Dongguk University College of Medicine, Gyeongju, Korea
| | - Yun Sok Ha
- Department of Urology, Kyungpook National University Chilgok Hospital, Daegu, Korea.,Department of Urology, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Jun Nyung Lee
- Department of Urology, Kyungpook National University Chilgok Hospital, Daegu, Korea.,Department of Urology, School of Medicine, Kyungpook National University, Daegu, Korea
| | - So Young Chun
- BioMedical Research Institute, Joint Institute for Regenerative Medicine, Kyungpook National University Hospital, Daegu, Korea
| | - Tae Gyun Kwon
- Department of Urology, Kyungpook National University Chilgok Hospital, Daegu, Korea.,Department of Urology, School of Medicine, Kyungpook National University, Daegu, Korea.,BioMedical Research Institute, Joint Institute for Regenerative Medicine, Kyungpook National University Hospital, Daegu, Korea
| | - Bum Soo Kim
- Department of Urology, School of Medicine, Kyungpook National University, Daegu, Korea.,BioMedical Research Institute, Joint Institute for Regenerative Medicine, Kyungpook National University Hospital, Daegu, Korea.,Department of Urology, Kyungpook National University Hospital, Daegu, Korea.
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5
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Gadzhiev N, Malkhasyan V, Akopyan G, Petrov S, Jefferson F, Okhunov Z. Percutaneous nephrolithotomy for staghorn calculi: Troubleshooting and managing complications. Asian J Urol 2020; 7:139-148. [PMID: 32257807 PMCID: PMC7096695 DOI: 10.1016/j.ajur.2019.10.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Revised: 05/06/2019] [Accepted: 07/17/2019] [Indexed: 02/06/2023] Open
Abstract
Staghorn calculi comprise a unique subset of complex kidney stone disease. Percutaneous nephrolithotomy (PCNL) is the gold standard treatment for staghorn stones. Despite continuous refinements to the technique and instrumentation of PCNL, these stones remain a troublesome challenge for endourologists and are associated with a higher rate of perioperative complications than that for non-staghorn stones. Common and notable intraoperative complications include bleeding, renal collecting system injury, injury of visceral organs, pulmonary complications, thromboembolic complications, extrarenal stone migration, and misplacement of the nephrostomy tube. Postoperative complications include infection and urosepsis, bleeding, persistent nephrocutaneous urine leakage, infundibular stenosis, and death. In this review, we report recommendations regarding troubleshooting measures that can be used to identify and characterize these complications. Additionally, we include information regarding management strategies for complications associated with PCNL for staghorn calculi.
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Affiliation(s)
- Nariman Gadzhiev
- Department of Urology, Pavlov First Saint Petersburg State Medical University, Russia
- Corresponding author.
| | - Vigen Malkhasyan
- Institute for Urology and Reproductive Health, Sechenov University, Moscow, Russia
| | - Gagik Akopyan
- Department of Urology, Sechenov First Moscow State Medical University, Russia
| | - Sergei Petrov
- Department of Urology, Pavlov First Saint Petersburg State Medical University, Russia
| | | | - Zhamshid Okhunov
- Department of Urology, University of California, Oakland, CA, USA
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6
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Mulay A, Satav V, Kandari A, Sharma S, Mane D, Sabale V. Evaluation of stone volume and its relationship with surgical outcomes in patients with staghorn calculi. Urol Ann 2019; 11:53-57. [PMID: 30787571 PMCID: PMC6362778 DOI: 10.4103/ua.ua_65_18] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Introduction: Urolithiasis is one of the most common renal diseases with a significant burden on health-care system worldwide. Here, we evaluated the stone volume and its relationship with duration of operation, blood loss, and total stone clearance in patients with staghorn calculi. Materials and Methods: This was a prospective, single-center study conducted from October 2015 to September 2017. Patients of either sex aged more than 18 years of age with a confirmed diagnosis of staghorn calculus were eligible to participate in the study. Eligible patients were divided into three groups based on stone volume (assessed by three-dimensional computed tomography): Group 1 (≤5000 mm3), Group 2 (>5000 to ≤20,000 mm3), and Group 3 (>20,000 mm3). Results: A total of 85 patients were enrolled in the study (Group 1, n = 9; Group 2, n = 66; and Group 3, n = 10). The mean age was 43.68 years, and 62.4% of patients were male. The mean operative time increased significantly from Groups 1–3, (31.67, 60.14, and 92.30 min, respectively). The mean pre- and postoperative hematocrit was highest in Group 3 (2.82%) (P < 0.0001). Overall, the correlation between stone volume and operative time and difference in hematocrit showed a positive relationship. A total of five patients had residual calculus, and only four patients reported complications. Conclusions: The results showed that patients with larger stone volume need more operative time and may have more blood loss.
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Affiliation(s)
- Abhirudra Mulay
- Department of Urology, Dr. D. Y. Patil Medical College, Pune, Maharashtra, India
| | - Vikram Satav
- Department of Urology, Dr. D. Y. Patil Medical College, Pune, Maharashtra, India
| | - Ashwani Kandari
- Department of Urology, Dr. D. Y. Patil Medical College, Pune, Maharashtra, India
| | - Sonu Sharma
- Department of Urology, Dr. D. Y. Patil Medical College, Pune, Maharashtra, India
| | - Deepak Mane
- Department of Urology, Dr. D. Y. Patil Medical College, Pune, Maharashtra, India
| | - Vilas Sabale
- Department of Urology, Dr. D. Y. Patil Medical College, Pune, Maharashtra, India
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Predictability and Practicality of Image-Based Scoring Systems for Patient Assessment and Outcome Stratification During Percutaneous Nephrolithotomy: a Contemporary Update. Curr Urol Rep 2017; 18:95. [PMID: 29046986 DOI: 10.1007/s11934-017-0740-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Preoperative nomograms offer systematic and quantitative methods to assess patient- and stone-related characteristics and their impact on successful treatment and potential risk of complication. Discrepancies in the correlation of perioperative variables to patient outcomes have led to the individual development, validation, and application of four independent scoring systems for the percutaneous nephrolithotomy: Guy's stone score, S.T.O.N.E. nephrolithometry, Clinical Research Office of the Endourology Society nomogram, and Seoul National University Renal Stone Complexity. The optimal nomogram should have high predictive ability, be practically integrated into clinical use, and be widely applicable to urinary stone disease. Herein, we seek to provide a contemporary evaluation of the advantages, disadvantages, and commonalities of each scoring system. While the current data is insufficient to conclude which scoring system is destined to become the gold standard, it is crucial that a nephrolithometric scoring system be incorporated into common practice to improve surgical planning, patient counseling, and outcome assessment.
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8
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MohamadiSichani M, Tolou Ghamari Z. Investigation of urinary neutrophil gelatinase associated lipocalin (NGAL) for early diagnosis of acute kidney injury after percutaneous nephrolithotomy. AFRICAN JOURNAL OF UROLOGY 2017. [DOI: 10.1016/j.afju.2017.04.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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9
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Sfoungaristos S, Mykoniatis I, Isid A, Lorber A, Gofrit ON, Hidas G, Landau EH, Pode D, Duvdevani M. Interobserver Reliability and Reproducibility of the Clinical Research Office of the Endourological Society Nomogram in Predicting Percutaneous Nephrolithotomy Results. Urology 2016; 97:56-60. [PMID: 27443463 DOI: 10.1016/j.urology.2016.07.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2016] [Revised: 07/12/2016] [Accepted: 07/13/2016] [Indexed: 11/17/2022]
Abstract
OBJECTIVE To assess interobserver reliability and reproducibility of the Clinical Research Office of the Endourological Society (CROES) nephrolithometric nomogram. PATIENTS AND METHODS Preoperative data and postoperative outcomes of 100 consecutive patients who underwent percutaneous nephrolithotomy were obtained. Patients' data were reviewed separately by 4 independent urologists of different academic level: an experienced attending endourologist, a graduated fellow, a young fellow, and a resident. Each rater adjusted a CROES score in all 100 patients. Interobserver reliability was analyzed by assessing intraclass correlation (ICC) and kappa coefficient among and between all different raters. RESULTS Assessment of interobserver reliability showed good or excellent agreement among all raters. Moderate agreement was only found between the raters for the "presence of staghorn" score. ICCs among all raters expressed excellent levels for each independent CROES parameter and reached great statistical significance. The highest correlation was noticed for "stone burden" in contrast to "presence of staghorn" parameter that showed the lowest. ICC for the final CROES score revealed good to excellent agreement among all raters and all pairs of raters. CONCLUSION CROES nephrolithometry is a reproducible nomogram. Reproducible results were obtained within a single institution by multiple reviewers of varying experience within a short period of time after undergoing standardized training.
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Affiliation(s)
- Stavros Sfoungaristos
- Department of Urology, Hadassah and Hebrew University Medical Center, Jerusalem, Israel.
| | - Ioannis Mykoniatis
- 1st Department of Urology, G. Gennimatas Hospital, Aristotle University, Thessaloniki, Greece
| | - Ayman Isid
- Department of Urology, Hadassah and Hebrew University Medical Center, Jerusalem, Israel
| | - Amitay Lorber
- Department of Urology, Hadassah and Hebrew University Medical Center, Jerusalem, Israel
| | - Ofer N Gofrit
- Department of Urology, Hadassah and Hebrew University Medical Center, Jerusalem, Israel
| | - Guy Hidas
- Department of Urology, Hadassah and Hebrew University Medical Center, Jerusalem, Israel
| | - Ezekiel H Landau
- Department of Urology, Hadassah and Hebrew University Medical Center, Jerusalem, Israel
| | - Dov Pode
- Department of Urology, Hadassah and Hebrew University Medical Center, Jerusalem, Israel
| | - Mordechai Duvdevani
- Department of Urology, Hadassah and Hebrew University Medical Center, Jerusalem, Israel
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10
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Vernez SL, Okhunov Z, Motamedinia P, Bird V, Okeke Z, Smith A. Nephrolithometric Scoring Systems to Predict Outcomes of Percutaneous Nephrolithotomy. Rev Urol 2016; 18:15-27. [PMID: 27162508 PMCID: PMC4859924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Currently, there is no single agreement upon an ideal predictive model that characterizes the complexity of renal stones and predicts surgical outcomes following percutaneous nephrolithotomy (PCNL). New predictive tools have recently emerged to systematically and quantitatively assess kidney stone complexity to predict outcomes following PCNL: the Guy's Stone Score, the CROES nomogram, S.T.O.N.E. nephrolithometry, and S-ReSC score. An ideal scoring system should include variables that both influence surgical planning and are predictive of postoperative outcomes. This review discusses the strengths, weaknesses, and commonalities of each of the above scoring systems. Additionally, we propose future directions for the development and analysis of surgical treatment for stone disease, namely, the importance of assessing radiation exposure and patient quality of life when counseling patients on treatment options.
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Affiliation(s)
- Simone L Vernez
- Department of Urology, University of California, Irvine, Irvine, CA
| | - Zhamshid Okhunov
- Department of Urology, University of California, Irvine, Irvine, CA
| | | | - Vincent Bird
- Department of Urology, University of Florida, Gainesville, FL
| | - Zeph Okeke
- The Arthur DM Smith Institute for Urology, North Shore-LIJ Health System, New Hyde Park, NY
| | - Arthur Smith
- The Arthur DM Smith Institute for Urology, North Shore-LIJ Health System, New Hyde Park, NY
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11
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Abreu LDADS, Camilo-Silva DG, Fiedler G, Corguinha GB, Paiva MM, Pereira-Correia JA, Muller VJF. Review on renal recovery after anatrophic nephrolithotomy: Are we really healing our patients? World J Nephrol 2015; 4:105-110. [PMID: 25664252 PMCID: PMC4317620 DOI: 10.5527/wjn.v4.i1.105] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Revised: 10/02/2014] [Accepted: 11/19/2014] [Indexed: 02/06/2023] Open
Abstract
The main goals for urinary stone treatment are to preserve renal function, reduce or avoid complications related to calculi, and to render the patient free of calculi as soon as possible. Anatrophic nephrolithotomy (ANL) is a valid and useful alternative for conventional staghorn calculi excision. Although excellent stone free rates can be achieved with ANL there are some drawbacks that may be of concern. Morbidity related to intraoperative and postoperative complications is one of them. Another, great concern is the possibility of reduction on renal function related to the procedure itself. This may be related to nephron injury during nephrotomy and parenchymal closure or to ischemic injury. In this review we assess functional results after anatrophic nephrolithotomy.
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12
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Gadzhiev N, Brovkin S, Grigoryev V, Tagirov N, Korol V, Petrov S. Sculpturing in urology, or how to make percutaneous nephrolithotomy easier. J Endourol 2014; 29:512-7. [PMID: 25321395 DOI: 10.1089/end.2014.0656] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
PURPOSE To investigate the usefulness of Plasticine biomodeling in surgical percutaneous management of complex renal stone. PATIENTS AND METHODS A total of 32 patients with complex renal stones (complete staghorn stones or partial staghorn stone with multiple caliceal stones) were included in this study from 2012 to 2013. Computed tomography (CT) urography with three-dimensional (3D) reconstructions was used as standard preoperative imaging in all patients. Preoperatively, Plasticine replication of the pelvicaliceal system was performed by the operating surgeon, based on the gathered 3D reconstructions. Then the model was taken to the operating room and used as a reference model in a sterile polyethylene bag during the operation. RESULTS Percutaneous renal access was achieved successfully in all cases. Twenty-nine (91%) patients were treated in the prone position and only 3 (9%) in supine position. There were 18 (56%) patients who had a single tract, 9 (28%) patients had two tracts, 3 (9%) patients had three tracts, and one (3%) patient needed four tracts. The mean operative time was 92 (±26) minutes. Second-look percutaneous nephrolithotomy (PCNL) was needed in 9 of 32 (28%) patients. All second-look sessions were performed in 2 to 3 days and/or on a normalized temperature. Six of 11 (54.5%) patients with complete staghorn stones needed a second-look PCNL session. Complete stone clearance was confirmed by low-dose CT, performed at 24 hours after surgery, in 89.4% of the patients treated by a single PCNL session and 82% in those who needed second-look sessions. The overall stone-free rate (SFR) in the study after second looks was 87.3%. CONCLUSIONS The proposed Plasticine 3D model seems to provide better preoperative renal collecting system appreciation and to serve as a reference tool during the operation, which in turn might increase SFRs and lower the complications rate after PCNL.
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Affiliation(s)
- Nariman Gadzhiev
- 1 Department of Urology, VCERM , Saint Petersburg, Russian Federation
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