Is Micropercutaneous Nephrolithotomy Technique Really Efficacicous for the Treatment of Moderate Size Renal Calculi? Yes

2015 ◽  
Vol 95 (1) ◽  
pp. 9-14 ◽  
Author(s):  
Tuna Karatag ◽  
Ibrahim Buldu ◽  
Ramazan Inan ◽  
Mustafa Okan Istanbulluoglu
Keyword(s):  
Percutaneous Nephrolithotomy ◽  
Renal Stones ◽  
Renal Calculi ◽  
Stent Insertion ◽  
Clinical Experiences ◽  
Micropercutaneous Nephrolithotomy ◽  
Stone Free Rate ◽  
The Mean ◽  
Clinically Significant ◽  
Duration Of Operation

Objective: To present our clinical experiences with micropercutaneous nephrolithotomy in the treatment of moderate-sized renal calculi from a single center. Methods: We retrospectively evaluated the patients with moderate-sized renal calculi who underwent micro-percutaneous nephrolithotomy between December 2012 and Septermber 2013. Results: A total of 68 patients and 70 renal units underwent microperc procedure. Mean age of patients was 41.4 ± 18.8. The mean stone size was 122 ± 83 mm2. The operations were performed under spinal anesthesia in 89.7% of the patients. Stone-free rate was 95.7 % (67/70). Clinically significant residual fragments were observed in three patients. The average duration of operation and mean fluoroscopy time was 40 ± 23 min and 108 ± 72 s, respectively. The mean postoperative drop in hemoglobin was 0.95 ± 0.7 while no patient required blood transfusion. Patients were discharged after an average hospitalization time of 27.5 ± 12.4 h. A total of 4 complications (5.7%), including urinary tract infection (Clavien I) in one patient and renal colics requiring stent insertion (Clavien IIIa) in three patients, were observed postoperatively. Conclusion: Microperc technique is safe, feasible, and efficacious. We suggest that micro-percutaneous nephrolithotomy should be considered for the treatment of moderate-sized renal stones as an alternative to SWL and RIRS failures and also may be considered even primarily.

scholarly journals Mini percutaneous nephrolithotomy versus retrograde flexible ureterorenoscopy in the treatment of renal calculi in anomalous kidneys

2021 ◽  
Vol 93 (2) ◽  
pp. 167-172
Author(s):  
Hussein M. Abdeldaeim ◽  
Omar El Gebaly ◽  
Mostafa Said ◽  
Abdel Rahman Zahran ◽  
Tamer Abouyoussif
Keyword(s):  
Percutaneous Nephrolithotomy ◽  
Hemoglobin Concentration ◽  
Renal Stones ◽  
Renal Calculi ◽  
Flexible Ureterorenoscopy ◽  
Single Center Experience ◽  
Stone Free Rate ◽  
The Mean ◽  
Free Rate

Objectives: To report our single center experience in comparing mini-percutaneous nephrolithotomy versus flexible ureterorenoscopy for management of renal stones up to 2 cm in anomalous kidneys. Materials and methods: Records of the last 30 patients with stones less than 2 cm in anomalous kidney treated by mini-percutaneous nephrolithotomy were reviewed and compared to last 30 patients treated by flexible ureterorenoscopy. Results: Mean stone size was significantly higher in the minipercutaneous nephrolithotomy group (17.90 mm) than in flexible ureterorenoscopy group (14.97mm) (p < 0.001). Mean operative time (80.33 min vs 56.43 min) and fluoroscopy exposure time (4.49 min vs 0.84 min) were significantly higher in the mini-percutaneous nephrolithotomy group than in the flexible ureterorenoscopy group (p < 0.001). The mean post-operative drop in hemoglobin concentration was significantly higher in the mini-percutaneous nephrolithotomy group (0.47 gm versus 0.2 gm) (p < 0.001). Stone free rate after 12 weeks follow up was not statistically significant between the 2 groups (90% in minipercutaneous nephrolithotomy vs 80% in flexible ureterorenoscopy) (FEp = 0.472).Conclusions: Both modalities were found to be safe and effective for treatment of stones less than 2 cm in anomalous kidneys.

Percutaneous nephrolithotomy of staghorn renal stones in pediatric patients using adult-sized instrument

2019 ◽  
Vol 86 (4) ◽  
pp. 211-215
Author(s):  
Akbar Nouralizadeh ◽  
Hamid Pakmanesh ◽  
Abbas Basiri ◽  
Mohammad Hadi Radfar ◽  
Behzad Narouie ◽  
...  
Keyword(s):  
Percutaneous Nephrolithotomy ◽  
Pediatric Patients ◽  
Renal Stones ◽  
Adult Size ◽  
Efficacy And Safety ◽  
Double J Stent ◽  
Stone Free Rate ◽  
The Mean ◽  
Free Rate ◽  
Free Status

Introduction: In this study, we aimed to evaluate the safety and efficacy of the percutaneous nephrolithotomy procedure performed with adult-sized instruments in pediatric cases with staghorn kidney stone. Methods: We retrospectively evaluated the efficacy and safety of 94 percutaneous nephrolithotomy procedures performed during 15 years in a single center for 82 pediatric patients with staghorn calculi using adult-sized instruments (24-Fr nephroscope). Stone free status was defined as complete clearance of the stones or the presence of insignificant residual stones of <3 mm in diameter. Results: The mean age was 108 ± 53 months (range, 14–180 months). There were 39 patients (48%) with complete staghorn stones and 43 cases (52%) with partial staghorn. We fulfilled 91.4% of operations through a single access. The stone free rate was 86.6% after one percutaneous nephrolithotomy session. In total, seven patients referred for shock wave lithotripsy and four cases were scheduled for the second percutaneous nephrolithotomy session. Fever occurred in 18 patients (21%) and bleeding requiring transfusion in four children (5%). Prolonged leakage from nephrostomy site requiring anesthesia for double J stent placement occurred in one patient. No grade IV or V Clavien complication occurred. Conclusion: The success rate and complications of percutaneous nephrolithotomy with adult-size instruments in pediatric patients are acceptable.

scholarly journals Prediction of Surgical Outcome after Percutaneous Nephrolithotomy through Guy’s Score and Nephrolithometric Nomogram

QJM ◽  
2020 ◽  
Vol 113 (Supplement_1) ◽  
Author(s):  
K A Teama ◽  
M I Shabayek ◽  
T I S Aly
Keyword(s):  
Quality Of Life ◽  
Percutaneous Nephrolithotomy ◽  
Scoring Systems ◽  
Renal Stones ◽  
University Hospitals ◽  
Stone Clearance ◽  
Stone Free Rate ◽  
The Mean ◽  
Free Rate

Abstract Background Urolithiasis has a well documented common occurrence in the general population. Percutaneous nephrolithotomy (PCNL), has prevailed over other more morbid procedures, like open surgeries in the management of such stones PNL in complex renal stones is a challenging procedure because it requires considerable experience in gaining percutaneous tracts, performing delicate and judicious intrarenal manipulations, mastering all techniques of intracorporeal stone disintegration, and weighing the benefits of complete stone clearance against the risks of complications. Aim of the Work GSS and Nephrolithometric Nomogram. Scoring system in predicting PCNL outcomes. The ability of the GSS and STONE score to correlate with the post-operative change in the quality of life. Patients and Methods In a non-randomized prospective study we evaluated the two scoring systems Guy’s and S.T.O.N.E. nephrolithometry scoring systems in predicting the success rate of PCNl and the quality of life. This study included 100 patients with renal stones who were scheduled for PCNL at El Demerdash University Hospitals and Nasser institute hospital in the period from April 2017 to October 2018. Results Our study included 100 patients (34 were female, 66 were male) with a mean age of 46.16 (range from 28 to 68). The mean GUY score was 1.57± 0.73 and the mean STONE score was 5.76± 1.19.the overall stone free rate was 89% with a complication rate of 18% with a mean stone burden &lt;400 mm.GUY and STONE score were able to predict SFR and complications after PCNL. Conclusion Both GSS and S.T.O.N.E Nephrolithometry Score can be used to stratify the complexity of renal stone before PCNL to predict the stone clearance and complication. Both can be valuable tools for providing uniformity for comparison of outcome, proper planning of the surgery and preoperative counseling of the patient.

scholarly journals Safety and efficacy of percutaneous nephrolithotomy for the treatment of paediatric urolithiasis

2012 ◽  
Vol 94 (8) ◽  
pp. 588-592 ◽  
Author(s):  
R Veeratterapillay ◽  
MBK Shaw ◽  
R Williams ◽  
P Haslam ◽  
A Lall ◽  
...  
Keyword(s):  
Percutaneous Nephrolithotomy ◽  
Renal Calculi ◽  
Clearance Rates ◽  
Stone Clearance ◽  
Extracorporeal Shock Wave ◽  
Stone Free Rate ◽  
Surgeon Experience ◽  
The Mean ◽  
Free Rate

INTRODUCTION Paediatric percutaneous nephrolithotomy (PCNL) has revolutionised the treatment of paediatric nephrolithiasis. Paediatric PCNL has been performed using both adult and paediatric instruments. Stone clearance rates and complications vary according to the technique used and surgeon experience. We present our experience with PCNL using adult instruments and a 28Fr access tract for large renal calculi in children under 18 years. METHODS All patients undergoing PCNL at our institution between 2000 and 2009 were reviewed. Demographics, surgical details and post-operative follow-up information were obtained to identify stone clearance rates and complications. RESULTS PCNL was performed in 32 renal units in 31 patients (mean age: 10.8 years). The mean stone diameter was 19mm (range: 5–40mm). Twenty-six cases required single puncture and six required multiple tracts. Overall, 11 staghorn stones, 10 multiple calyceal stones and 11 single stones were treated. Twenty-seven patients (84%) were completely stone free following initial PCNL. Two cases had extracorporeal shock wave lithotripsy for residual fragments, giving an overall stone free rate of 91% following treatment. There was no significant bleeding or sepsis encountered either during the operation or in the post-operative setting. No patient required or received a blood transfusion. CONCLUSIONS Paediatric PCNL can be performed safely with minimal morbidity using adult instruments for large stone burden, enabling rapid and complete stone clearance.

scholarly journals Mini-percutaneous nephrolithotomy in surgery of nephrolithiasis

2021 ◽  
pp. 44-52
Author(s):  
Аndriy Sahalevych ◽  
Roman Sergiychuk ◽  
Vladislav Ozhohin ◽  
Olexandr Vozianov ◽  
Andriy Khrapchuk ◽  
...  
Keyword(s):  
Hospital Stay ◽  
Percutaneous Nephrolithotomy ◽  
Renal Stones ◽  
Renal Calculi ◽  
Stone Free Rate ◽  
Duration Of Surgery ◽  
Lower Complication ◽  
Lower Complication Rate ◽  
Tract Infections ◽  
Free Rate

Abstract. The present study aimed to assess the effectiveness and safety of mini-percutaneous nephrolithotomy (mPNL) in comparison with standard percutaneous nephrolithotomy (sPNL) for the treatment of complex nephrolithiasis. Methods. During the period from 2012 to 2020, 1021 patients with solitary (10.0-30.0 mm), staghorn and multiple renal calculi were retrospectively divided into two groups: sPNL (500 patients) and mPNL (521 patients). The groups were compared by the stone-free rate (%, SFR), the duration of the surgery, complications and hospital stay. Results. SPNL and mPNL were highly effective procedures for the treatment of nephrolithiasis. The mPNL group had longer operative times (81.0±15.5 vs 69.1±13.9 min, p<0.001) and higher frequency tubeless/totally tubeless procedures (41.1 vs 6.8%, p<0.001). mPNL showed a higher SFR (96.4 vs 91.8%, р=0.002 in patients with complete staghorn (90.1 vs 77.3%, p<0.05) and multiple kidney stones (89.5 vs 70.8%, p=0.03). Postoperative decrease in hemoglobin was lower in mPNL group 1.1±0.34 vs 2.1±0.26 g/dl (p<0.001). The incidence rate of urinary tract infections and postoperative hospital stay was lower in the mPNL group: 7.3 vs 13.2%, p=0.03 and 1.9±0.6 vs 4.3±2.4 days, р<0.001. Conclusions. MPNL is a safe and effective treatment for patients with complex renal stones with an improved stone-free rate and lower complication rate and shorter hospital stay. Smaller diameter tract in mPNL procedures was associated with a longer duration of surgery.

scholarly journals Safety and efficacy of Chinese minimally invasive percutaneous nephrolithotomy in the management of renal stones ≤ 2 cm: a single-center experience

2019 ◽  
Vol 25 (1) ◽  
Author(s):  
Elsayed M. Salih ◽  
Ibrahim Elsotohi ◽  
Hisham Elhelaly ◽  
Mohamed Elsalhy ◽  
Mourad M. Mourad
Keyword(s):  
Minimally Invasive ◽  
Percutaneous Nephrolithotomy ◽  
Renal Stone ◽  
Renal Stones ◽  
Stone Size ◽  
Intraoperative Complication ◽  
Safety And Efficacy ◽  
Single Center Experience ◽  
Minimally Invasive Percutaneous Nephrolithotomy ◽  
The Mean

Abstract Background The goal for using smaller caliber instruments in PNL was to reduce the access-related complications and to decrease morbidity. The objective of this study was to evaluate the safety and efficacy of Chinese minimally invasive percutaneous nephrolithotomy (MIPNL) in the treatment of renal stones ≤ 20 mm. Results Sixty-seven patients completed the study protocol. The mean age was 41.10 ± 13.99 years (range 18–68 years). There were 43 (64%) male and 24 (36%) females. The mean stone size was ranged from 78.5 to 439.6 mm2 (mean ± SD 172.48 ± 69.54 mm2). The overall SFR was (82%). Twelve (18%) needed post-MIPNL auxiliary procedure, in the form of second MIPNL in 3 (4.5%) cases, SWL in 7 (10%), and RIRS in 2 (3%) cases. The intraoperative complication was present in four patients (5%) include bleeding necessitate blood transfusion in one patient (1.5%) and renal collecting system perforation 3 (4.5%). The postoperative complication was urine leakage 5 (7.5) and fever in 6 (9%) of patients. Conclusion Chinese MIPNL is safe and effective method for treatment of renal stone ≤ 20 mm size with satisfactory SFR and low complication rate when SWL failed or contraindicated. It is considered a feasible treatment alternative to standard PNL, in the absence of flexible URS or miniature nephroscope.

scholarly journals Efficacy and safety of laparoscopic pyelolithotomy versus percutaneous nephrolithotomy for treatment of large renal stones: a meta-analysis

2021 ◽  
Vol 49 (1) ◽  
pp. 030006052098313
Author(s):  
Tie Mao ◽  
Na Wei ◽  
Jing Yu ◽  
Yinghui Lu
Keyword(s):  
Blood Transfusion ◽  
Blood Loss ◽  
Percutaneous Nephrolithotomy ◽  
Meta Analysis ◽  
Renal Stones ◽  
Efficacy And Safety ◽  
Complementary Treatment ◽  
Laparoscopic Pyelolithotomy ◽  
Stone Free Rate ◽  
Free Rate

Background We aimed to compare the efficacy and safety of laparoscopic pyelolithotomy (LPL) versus percutaneous nephrolithotomy (PCNL) for treating renal stones larger than 2 cm. Methods We searched the PubMed, Embase, Web of Science, SinoMed, and Chinese National Knowledge Infrastructure databases for studies that compared the surgical outcomes of LPL and PCNL. We conducted a meta-analysis of the retrieved studies, expressed as weighted mean difference or risk ratios with 95% confidence intervals. Results We included 25 studies (1831 patients). LPL was associated with a significantly higher stone-free rate, lower rates of blood loss, complementary treatment, blood transfusion, and complications, and less reduction in hemoglobin level compared with PCNL. LPL and PCNL were similar in terms of duration of hospital stay, conversion rate, changes in glomerular filtration rate and creatinine level, and mean time of postoperative analgesia. However, LPL was associated with a longer operation time than PCNL. Conclusion LPL appears to be more effective and safer than PCNL in patients with large renal stones, by increasing the stone-free rate and reducing blood loss, complementary treatment, blood transfusion, and complications compared with PCNL. LPL may thus be a useful modality for treating patients with large renal stones.

scholarly journals A Novel Technique of Ultra-Mini-Percutaneous Nephrolithotomy: Introduction and an Initial Experience for Treatment of Upper Urinary Calculi Less Than 2 cm

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Janak Desai ◽  
Guohua Zeng ◽  
Zhijian Zhao ◽  
Wen Zhong ◽  
Wenzhong Chen ◽  
...  
Keyword(s):  
Percutaneous Nephrolithotomy ◽  
Urinary Calculi ◽  
Renal Stones ◽  
Laser Lithotripsy ◽  
Complication Rates ◽  
Modified Technique ◽  
Average Operative Time ◽  
Grade Ii ◽  
The Mean ◽  
Metal Sheath

Objectives. To describe our novel modified technique of ultra-mini-percutaneous nephrolithotomy (UMP) using of a novel 6 Fr mininephroscope through an 11–13 Fr metal sheath to perform holmium: YAG laser lithotripsy.Methods. The medical records of 36 patients with moderate-sized (<20 mm) kidney stones treated with UMP from April to July 2012 were retrospectively reviewed. Patients were assessed at the 1st day and 1st month postoperatively by KUB and US to assess stone-free status.Results. The mean stone size was 14.9 ± 4.1 mm (rang: 6–20). The average operative time was 59.8 ± 15.9 (30–90) min. The stone-free rate at postoperative 1st day and 1st month was 88.9% and 97.2%. The mean hospital stay was 3.0 ± 0.9 (2–5) days. Complications were noted in 6 (16.7%) cases according to the Clavien classification, including sepsis in 2 (5.6%) cases (grade II), urinary extravasations in 1 (2.8%) case (grade IIIa), and fever in 3 (8.3%) cases (grade II). No patients needed blood transfusion.Conclusions. UMP is technically feasible, safe, and efficacious for moderate-sized renal stones with an advantage of high stone-free rates and low complication rates. However, due to the limits of its current unexplored indications, UMP is therefore a supplement to, not a substitute for, the standard mini-PCNL technology.

scholarly journals Efficacy of Percutaneous Nephrolithotomy in the Treatment of Renal Calculi of 10 to 20 MM Size: A Comparison With Extracorporeal Shock Wave Lithotripsy

2020 ◽  
Vol 21 (2) ◽  
pp. 98-104
Author(s):  
Muhammad Mahmud Alam ◽  
Mohammad Rezaul Karim ◽  
Mohammad Ohiduzzaman Khan ◽  
Mohammad Mukhlesur Rahman ◽  
Mahfuja Asma ◽  
...  
Keyword(s):  
Shock Wave ◽  
Percutaneous Nephrolithotomy ◽  
Extracorporeal Shock Wave Lithotripsy ◽  
Shock Wave Lithotripsy ◽  
Renal Stones ◽  
Renal Calculi ◽  
Post Procedure ◽  
Extracorporeal Shock Wave ◽  
Significant Difference

Background: Stones in the urinary tract is a common medical problem in the general population. At present, the great expansion in minimally invasive techniques has led to the decrease in open surgery. Extracorporeal shock wave lithotripsy (ESWL) has been introduced as an alternative approach which disintegrates stones in the kidney and upper urinary tract through the use of shock waves. Nevertheless, as there are limitations with the success rate in ESWL, other minimally invasive modalities for kidney stones such as percutaneous nephrolithotomy (PCNL) is also widely applied. There is a trend of using ESWL for treatment of renal stones smaller than 1 cm and PCNL in those with stones greater than 2 cm. Nevertheless, no consensus regarding treatment of renal stones between 1 to 2 cm stones. The objective of this prospective study was to compare the results of ESWL and PCNL for treatment of 1 to 2 cm renal stones. Method : This is a quasi experimental study. This study was conducted to compare the efficacy and safety of percutaneous nephrolithotomy (PCNL) and extracorporeal shock wave lithotripsy (ESWL) in treating 10 to 20 mm sized renal stone among the Bangladeshi population. This prospective study conducted between the periods of September, 2011 to August, 2012 in the department of urology, Bangabandhu Sheikh Mujib medical university (BSMMU) Hospital. All the patients attending the urology outpatient clinic with 10 to 20mm renal calculi were the study population. A total of 70 subjects were enrolled for this study and they were equally divided into two groups so that each group had 35 subjects. The one group received PCNL whereas the other group received ESWL. Statistical analyses of the results were obtained by using window based computer software devised with Statistical Packages for Social Sciences (SPSS-15). Results: There is no statistically significant difference in regarding age, sex, stone side(lt. or rt.), the distribution of stone (upper, middle and lower calyx) and size between the groups (p>0.05). At 3 month follow up among the patients in ESWL group stone cleared and not cleared were 25(71.4%) and 10(28.6%) respectively and at 3 month follow up among the patients in PCNL group stone cleared and not cleared were 33(94.3%) and 2(5.7%)respectively. There is statistically significant difference in stone clearance rate at 3 month follow up between the groups (p<0.05). All patients in ESWL group developed post procedure haematuria 35(100.0%). Other post procedure complications among the ESWL group pain, fever and steinstrasse were 12(34.3%), 07(20.0%) and 03(08.6%) respectively. Common post procedure complications among the patients of PCNL group pain, haematuria and fever were 11(31.4%), 33(94.3%) and 13(37.1%) respectively. Other post procedure complications in PCNL group were vomiting (8.6%), urinary leakage (5.7%), wound infection (11.4%) and urinary cutaneous fistula (5.7%). There was no statistically significant difference post procedure pain, haematuria and fever between the groups (p>0.05), but statistically significant difference observed in steinstrasse and wound infection between the groups (p<0.05). Mean±SD of hospital stay among the patients of ESWL group and PCNL group was 1.37±0.65 and 4.34±1.43 days respectively. There is statistically significant difference in hospital stay between the groups (p<0.05). Conclusion: Though some specific complications which can be treated conservatively are more in PCNL group it may be concluded that the treatment with PCNL is better option than ESWL among the patients having renal calculi 10 to 20 mm. Bangladesh Journal of Urology, Vol. 21, No. 2, July 2018 p.98-104

scholarly journals Predictors of Success after Extracorporeal Shock Wave Lithotripsy (ESWL) for Renal Calculi Between 20—30 mm: A Multivariate Analysis Model

2006 ◽  
Vol 6 ◽  
pp. 2388-2395 ◽  
Author(s):  
Ahmed El-Assmy ◽  
Ahmed R. El-Nahas ◽  
Mohamed E. Abo-Elghar ◽  
Ibrahim Eraky ◽  
Mahmoud R. El-Kenawy ◽  
...  
Keyword(s):  
Surface Area ◽  
Renal Stones ◽  
Renal Calculi ◽  
Analysis Model ◽  
Stone Surface ◽  
Chi Square ◽  
Renal Anomalies ◽  
Extracorporeal Shock Wave ◽  
Stone Free Rate ◽  
Free Rate

The first-line management of renal stones between 20—30 mm remains controversial. The Extracorporeal Shock Wave Lithotripsy (ESWL) stone-free rates for such patient groups vary widely. The purpose of this study was to define factors that have a significant impact on the stone-free rate after ESWL in such controversial groups. Between January 1990 and January 2004, 594 patients with renal stones 20—30 mm in length underwent ESWL monotherapy. Stone surface area was measured for all stones. The results of treatment were evaluated after 3 months of follow-up. The stone-free rate was correlated with stone and patient characteristics using the Chi-square test; factors found to be significant were further analyzed using multivariate analysis.Repeat ESWL was needed in 56.9% of cases. Post-ESWL complications occurred in 5% of cases and post-ESWL secondary procedures were required in 5.9%. At 3-month follow-up, the overall stone-free rate was 77.2%. Using the Chi-square test, stone surface area, location, number, radiological renal picture, and congenital renal anomalies had a significant impact on the stone-free rate. Multivariate analysis excluded radiological renal picture from the logistic regression model while other factors maintained their statistically significant effect on success rate, indicating that they were independent predictors. A regression analysis model was designed to estimate the probability of stone-free status after ESWL. The sensitivity of the model was 97.4%, the specificity 90%, and the overall accuracy 95.6%.Stone surface area, location, number, and congenital renal anomalies are prognostic predictors determining stone clearance after ESWL of renal calculi of 20—30 mm. High probability of stone clearance is obtained with single stone ≤400 mm2 located in renal pelvis with no congenital anomalies. Our regression model can predict the probability of the success of ESWL in such controversial groups and can define patients who would need other treatment modality.

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