Stone Burden Measurement by 3D Reconstruction on Noncontrast Computed Tomography Is Not a More Accurate Predictor of Stone-Free Rate After Percutaneous Nephrolithotomy Than 2D Stone Burden Measurements

2020 ◽  
Vol 34 (5) ◽  
pp. 550-557
Author(s):  
Thomas Tailly ◽  
Brandon R. Nadeau ◽  
Philippe D. Violette ◽  
Yige Bao ◽  
Justin Amann ◽  
...  
Keyword(s):  
Computed Tomography ◽  
3D Reconstruction ◽  
Percutaneous Nephrolithotomy ◽  
Accurate Predictor ◽  
Stone Burden ◽  
Stone Free Rate ◽  
Noncontrast Computed Tomography ◽  
Free Rate

scholarly journals Factors Affecting Transfusion During Percutaneous Nephrolithotomy: A Retrospective Study of 665 Cases

2021 ◽  
Author(s):  
Hong Zhao ◽  
Jun-Sheng Li ◽  
Li Li ◽  
Hang Wang ◽  
Yi Miao ◽  
...  
Keyword(s):  
Blood Transfusion ◽  
Percutaneous Nephrolithotomy ◽  
Open Surgery ◽  
Transfusion Rate ◽  
Preoperative Hemoglobin ◽  
Stone Burden ◽  
Stone Free Rate ◽  
History Of ◽  
Stone Type ◽  
Free Rate

Abstract Purpose: To evaluate the aspects affecting transfusion following percutaneous nephrolithotomy (PCNL).Background: From 2016 to 2019, 665 patients underwent PCNL for removal of renal calculi in our center. Complications, including hemorrhages, have been reported. Twenty-three patients (3.5%) have received a blood transfusion and twelve (1.9%) were treated by hyper-selective embolization. We focus on the influencing factors related to postoperative blood transfusion. The factors analyzed were (age, sex, hypertension, diabetes, serum creatinine level, preoperative hemoglobin, and use of anticoagulants or antiplatelet medications); renal and stone factors (previous surgery, abnormal anatomy, stone side, stone burden, stone type); and surgical features: (access number, the calyx of puncture and stone-free rate). These data were analyzed for the presence of bleeding.Results: Among individual factors, preoperative hemoglobin level (P<0.001), and urinary infection (P<0.001) were significantly correlated with blood transfusion. Among renal and stone factors, only previous history of open surgery was significantly correlated with blood transfusion (P<0.05). Stone type or stone burden does not correlate with transfusion. There was also no statistically significant correlation between surgical features and bleeding, and a lower stone-free rate reported for transfusion group.Conclusion: The obtained results demonstrated that PCNL is a safer surgery in a high volume center, but anemic conditions, infections and history of open surgery will significantly increase transfusion rate following PCNL.

scholarly journals Factors affecting stone free rate of primary percutaneous nephrolithotomy on staghorn calculi: a single center experience of 15 years

F1000Research ◽  
2016 ◽  
Vol 5 ◽  
pp. 2106 ◽  
Author(s):  
Widi Atmoko ◽  
Ponco Birowo ◽  
Nur Rasyid
Keyword(s):  
Percutaneous Nephrolithotomy ◽  
Renal Stone ◽  
Univariate Analysis ◽  
Staghorn Calculi ◽  
Stone Burden ◽  
Stone Free Rate ◽  
History Of ◽  
Renal Stone Surgery ◽  
The Mean ◽  
Free Rate

Objectives: Percutaneous nephrolithotomy on staghorn calculi is challenging for urologists because it is difficult to remove all of the stones. The purpose of this study was to evaluate the associated factors of stone-free rate after primary percutaneous nephrolithotomy on staghorn calculi in a large series of patients at a single, tertiary referral, endourologic stone center. Methods: We collected data from medical record between January 2000 and December 2015. A total of 345 primary percutaneous nephrolithotomy procedures were performed for patients with staghorn calculi. This study included both and made no distinction between partial and complete staghorn calculi. Stone-free is defined as the absence of residual stones after undergoing percutaneous nephrolithotomy for the first time. Significant factors from univariate analysis that correlated with stone-free rate after primary percutaneous nephrolithotomy of staghorn stone were further analyzed using multivariate regression analysis. Results: The mean patient age was 52.23±10.38 years. The stone-free rate of percutaneous nephrolithotomy monotherapy was 62.6%. The mean operating time was 79.55±34.46 minutes. The mean length of stay in hospital was 4.29±3.00 days. Using the chi-square test, history of ipsilateral open renal stone surgery (p = 0.01), stone burden (p = < 0.001), and type of anesthesia (p = 0.04) had a significant impact on the stone-free. From multivariate analysis, the history of ipsilateral open renal stone surgery [OR 0.48; 95% CI 0.28-0.81; p 0.01] and the stone burden [OR 0.28; 95% CI 0.18-0.45; p 0.00] were significant independent risk factors for stone-free.

scholarly journals PERCUTANEOUS NEPHROLITOTOMY ON THE MANAGEMENT OF CALYX INFERIOR STONES

2014 ◽  
Vol 21 (2) ◽  
Author(s):  
Pande Made Wisnu Tirtayasa ◽  
Ponco Birowo ◽  
Nur Rasyid
Keyword(s):  
Percutaneous Nephrolithotomy ◽  
Medical Records ◽  
Renal Ultrasonography ◽  
Abdominal Radiography ◽  
Stone Burden ◽  
Stone Free Rate ◽  
Plain Abdominal Radiography ◽  
Free Rate ◽  
Free Status ◽  
Residual Fragments

Objectives: To compare the stone free rates of inferior calyceal stones with stone burden < 20 mm, 21-30 mm, and > 30 mm on post-percutaneous nephrolithotomy (PCNL) patients in Cipto Mangunkusumo Hospital. Material & method: The data was collected retrospectively from PCNL medical records in Cipto Mangunkusumo Hospital between January 2000 until May 2012. Patients were followed-up with plain abdominal radiography (BNO) or renal ultrasonography (USG). Stone free status was defined as no residual fragments on radiography or USG. Results: As many as 88 patients with inferior calyceal stones who underwent PCNL were included. Forty-three cases had stone burden < 20 mm, 34 cases with stone burden 21-30 mm, and 11 cases with stone burden > 30 mm. Overall, 81 (92%) cases were defined as stone free. On group < 20 mm, 21-30 mm, and > 30 mm; 41 (95%), 32 (94%), and 8 (73%) cases defined as stone free respectively (p = 0.485). Conclusion: PCNL is the primary modalityon the management of calyx inferior stones with high stone free rate. The stone free rate of these three groups showed no statistically significant difference.Keywords: Percutaneous nephrolithotomy, inferior calyx stone, stone free rate.

scholarly journals Factors affecting stone free rate of primary percutaneous nephrolithotomy on staghorn calculi: a single center experience of 15 years

F1000Research ◽  
2016 ◽  
Vol 5 ◽  
pp. 2106 ◽  
Author(s):  
Widi Atmoko ◽  
Ponco Birowo ◽  
Nur Rasyid
Keyword(s):  
Percutaneous Nephrolithotomy ◽  
Renal Stone ◽  
Univariate Analysis ◽  
Staghorn Calculi ◽  
Stone Burden ◽  
Stone Free Rate ◽  
History Of ◽  
Renal Stone Surgery ◽  
The Mean ◽  
Free Rate

Objectives: Percutaneous nephrolithotomy on staghorn calculi is challenging for urologists because it is difficult to remove all of the stones. The purpose of this study was to evaluate the associated factors of stone-free rate after primary percutaneous nephrolithotomy on staghorn calculi in a large series of patients at a single, tertiary referral, endourologic stone center. Methods: We collected data from medical record between January 2000 and December 2015. A total of 345 primary percutaneous nephrolithotomy procedures were performed for patients with staghorn calculi. This study included both and made no distinction between partial and complete staghorn calculi. Stone-free is defined as the absence of residual stones after undergoing percutaneous nephrolithotomy for the first time. Significant factors from univariate analysis that correlated with stone-free rate after primary percutaneous nephrolithotomy of staghorn stone were further analyzed using multivariate regression analysis. Results: The mean patient age was 52.23±10.38 years. The stone-free rate of percutaneous nephrolithotomy monotherapy was 62.6%. The mean operating time was 79.55±34.46 minutes. The mean length of stay in hospital was 4.29±3.00 days. Using the chi-square test, history of ipsilateral open renal stone surgery (p = 0.01), stone burden (p = < 0.001), and type of anesthesia (p = 0.04) had a significant impact on the stone-free. From multivariate analysis, the history of ipsilateral open renal stone surgery [OR 0.48; 95% CI 0.28-0.81; p 0.01] and the stone burden [OR 0.28; 95% CI 0.18-0.45; p 0.00] were significant independent risk factors for stone-free.

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 External validation of the R.I.R.S. scoring system to predict stone-free rate after retrograde intrarenal surgery

BMC Urology ◽  
2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Cong Wang ◽  
ShouTong Wang ◽  
Xuemei Wang ◽  
Jun Lu
Keyword(s):  
Scoring System ◽  
Kidney Stone ◽  
Medical Center ◽  
External Validation ◽  
Retrograde Intrarenal Surgery ◽  
Stone Burden ◽  
Stone Free Rate ◽  
Stone Density ◽  
Free Rate ◽  
Free Status

Abstract Background The R.I.R.S. scoring system is defined as a novel and straightforward scoring system that uses the main parameters (kidney stone density, inferior pole stones, stone burden, and renal infundibular length) to identify most appropriate patients for retrograde intrarenal surgery (RIRS). We strived to evaluate the accuracy of the R.I.R.S. scoring system in predicting the stone-free rate (SFR) after RIRS. Methods In our medical center, we retrospectively analyzed charts of patients who had, between September 2018 and December 2019, been treated by RIRS for kidney stones. A total of 147 patients were enrolled in the study. Parameters were measured for each of the four specified variables. Results Stone-free status was achieved in 105 patients (71.43%), and 42 patients had one or more residual fragments (28.57%). Differences in stone characteristics, including renal infundibulopelvic angle, renal infundibular length, lower pole stone, kidney stone density, and stone burden were statistically significant in patients whether RIRS achieved stone-free status or not (P < 0.001, P: 0.005, P < 0.001, P < 0.001, P: 0.003, respectively). R.I.R.S. scores were significantly lower in patients treated successfully with RIRS than patients in which RIRS failed (P < 0.001). Binary logistic regression analyses revealed that R.I.R.S. scores were independent factors affecting RIRS success (P = 0.033). The area under the curve of the R.I.R.S. scoring system was 0.737. Conclusions Our study retrospectively validates that the R.I.R.S. scoring system is associated with SFR after RIRS in the treatment of renal stones, and can predict accurately.

scholarly journals Impact of weight on stone-free rate during percutaneous nephrolithotomy

2020 ◽  
Vol 26 (1) ◽  
Author(s):  
Abdrabuh M. Abdrabuh
Keyword(s):  
Percutaneous Nephrolithotomy ◽  
Operative Procedure ◽  
World Health ◽  
Fluoroscopy Time ◽  
Morbidly Obese ◽  
Obese Patients ◽  
Co Morbidity ◽  
Stone Free Rate ◽  
Morbid Obese ◽  
Free Rate

Abstract Background To assess Impact of weight on stone-free rate during percutaneous nephrolithotomy. Methods Hundred and twenty-three PNL procedures were done between January 2016 and July 2017. The patients were divided into four groups according to the World Health Organization (WHO) classification of body mass index (BMI): < 25 ((group 1, average)), 25–29.9 (group 2, overweight), 30–39.9 (group 3, obese), and ≥ 40 kg/m2 (group 4, morbidly obese). All groups were compared as regarding preoperative variables, intra-operative procedure and postoperative results. Results The non-obese groups were younger in age than obese and morbid obese groups (P = 0.005). The difference in BMI was statistically significant between non-obese and obese groups (P = 0.0001). Most of females gender were obese and morbid obese (P = 0.0001) and most of the obese patients had left-sided renal stone (P = 0.001). Most of overweight and obese groups had radiopaque stones (P = 0.02). There were no statistically significant differences between all groups as regarding co-morbidity, stone size, stone locations, and hydronephrosis grade. Operative time (P = 0.034), length of hospital stay (P value = 0.014) and fluoroscopy time (P = 0.0001) were statistically significant differences between all groups. Number of accesses, access site, postoperative hemoglobin drop, post- operative complications, fate of residual stones and stone-free rate were not statistically significant differences between all groups. BMI was correlated with mean fluoroscopy time and mean hospitalization duration in our study as the time of hospitalization and time of x-ray exposure increase with obesity. Conclusion PNL is a safe and effective procedure for obese patients. BMI do not predict clearance post PNL.

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