Factors Influencing the Duration of Urine Leakage following Percutaneous Nephrolithotomy

Üyetürk, Uğur; Gücük, Adnan; Kemahlı, Eray; Dağıstan, Emine; Yildiz, Mevlüt; Yılmaz, Burak; Metin, Ahmet

doi:10.1155/2014/105709

Cited by 5 publications

(11 citation statements)

References 24 publications

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“…This may cause PUL due to delayed healing resulting from decreased blood supply to this area and the loss of the compressive properties of the thin parenchyma. Uyeturk et al reported that the renal parenchymal thickness in the access line showed a more significant correlation with the duration of urinary leakage com-pared to the degree of hydronephrosis (20), which was also supported by Ansari et al (18). In our study, we showed that renal parenchymal thickness in the access line was a factor predicting PUL.…”

Section: Discussionsupporting

confidence: 87%

A novel nomogram and a simple scoring system for urinary leakage after percutaneous nephrolithotomy

et al. 2022

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Introduction:The present study aimed to investigate the factors of prolonged urinary leakage (PUL) after percutaneous nephrolithotomy (PCNL) and develop a new and simple scoring system to predict it. Patients and Methods: We retrospectively reviewed patients with renal stones who underwent PCNL at the University of Health Sciences Izmir Bozyaka Training and Research Hospital between April 2011 and January 2020. The patients were divided into two groups according to the presence of PUL, and their preoperative and perioperative data were compared. A multivariate regression analysis was applied to examine the relationship between perioperative descriptors and PUL, and a nomogram was developed using significant predictors. Then, the individual components of the nomogram were assigned points to form a scoring system. Results: There were 92 and 840 patients in the groups with and without PUL, respectively. The results of the univariate logistic regression analysis showed that hydronephrosis grade, parenchymal thickness, duration of nephroscopy, and duration of nephrostomy catheter were significantly associated with PUL. Subsequently, a multivariate regression analysis was carried out with these four factors as possible independent risk factors of PUL after PCNL. Based on the results of this analysis, a nomogram prediction model was developed with an area under the curve value of 0.811, which was consequently used to develop a new simple score system consisting of three characteristics: parenchymal thickness (1-5 points), duration of nephroscopy (1-3 points), and hydronephrosis grade (1-3 points). Conclusion: A novel scoring system is a useful tool for predicting PUL in patients who have undergone percutaneous nephrolithotomy.

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Section: Discussionsupporting

confidence: 87%

A novel nomogram and a simple scoring system for urinary leakage after percutaneous nephrolithotomy

et al. 2022

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“…[ 12 ] reported that stone burden prolongs the duration of hospital stay due to prolonged urinary leakage while Uyeturk et al . [ 13 ] demonstrated opposite results. We do not think that stone burden influences the post-PCNL prolonged urinary leakage.…”

Section: Discussionmentioning

confidence: 99%

“…Uyeturk et al . [ 13 ] reported that renal parenchymal thickness in access line is more significantly correlated with duration of urinary leakage than grade of hydronephrosis. The present study also confirmed that renal parenchymal thickness in access line inversely correlated with prolong urinary leakage.…”

Section: Discussionmentioning

confidence: 99%

Study of predictive factors affecting the prolonged urinary leakage after percutaneous nephrolithotomy

Tomar

Yadav

et al. 2016

Urol Ann

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Objective:To evaluate the factors that may influence the prolonged urinary leakage following percutaneous nephrolithotomy (PCNL).Materials and Methods:A total of 936 consecutive patients underwent PCNL during the study period from April 2013 to December 2014 at our center, and data were recorded prospectively. Patients who required stage PCNL, chronic renal failure and diabetic patients, concurrent ureteric stone and patients in whom double-J stent was placed because of ureteropelvic injury, or pelvicalyceal extravasation were excluded from the study. After exclusion, 576 patients were included in the study. The predictive factors that may lead to prolonged urinary leakage after PCNL were broadly categorized into patient-related factors and procedure-related factors. Patients were divided into two groups: Group 1 (n = 32) – Required double-J stent placement due to prolonged urinary leakage (>48 h) after removal of the nephrostomy tube. Group 2 (n = 544) – Did not require double-J stent placement.Results:Patient-related factors such as stone complexity, grade of hydronephrosis, renal parenchymal thickness in access line, and intra-parenchymal renal pelvis were most important factors for prolonged urinary leakage (P < 0.05, P < 0.05, P < 0.05, and P < 0.05, respectively), while procedure-related factors such as multiple punctures, surgeon's experience, and residual stones were most important factors for prolonged urinary leakage (P < 0.05, P < 0.05, and P < 0.05, respectively).Conclusion:In the present study, several factors appear to affect post-PCNL prolonged urinary leakage. We suggest that patients who are at increased risk of prolonged urinary leakage double-J stent should be placed at the end of PCNL procedure.

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“…The association between renal PT and UL has been investigated in some studies. Uyetürk et al [16] found 17.2 mm optimum cut-off value of PT for hospitalization ≤ 12 h with 90.2% sensitivity and 69.4% specificity. Ansari et al [4] determined 17 mm cut-off value of PT hospitalization of patients due to prolonged urinary leakage with 95.2 sensitivity and 60.2% specificity.…”

Section: Discussionmentioning

confidence: 99%

Stones hounsfield unit value and predictors of urinary leakage after PCNL

et al. 2022

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Background To evaluate the predictive factors of urinary leakage (UL) following percutaneous nephrolithotomy (PNL) and to investigate the relationship between Hounsfield unit (HU) of stone and UL. Methods We retrospectively reviewed the data of 728 patients who underwent PNL between January 2012 and January 2017. In total, 396 patients were eligible for the study. Patient demographics, renal factors, stone properties and operative details were collected. The association between UL and these variables were assessed by univariate and multivariate analysis. Results There was no statistically significant correlation considering age, body mass index and the presence of hypertension. The presence of diabetes mellitus (DM) was significantly correlated with UL (p < 0.001). Kidney related factors such as parenchymal thickness, hydronephrosis grade (HN), previous stone treatment, and stone related factors, such as stone surface area, stone burden, stone localization and HU value of stone, were found to affect UL status significantly (p < 0.001). Operation time, fluoroscopy time, treatment outcome, j stent use, percutenous nephrostomy (PCN) catheter stay time and the hospitalization time also had significant effect on UL (p < 0.001). Multivariable logistic analysis showed that presence of DM, parenchymal thickness, HU values, HN, operation time, j stent use, and PCN catheter stay time are independently related with UL following PCNL. Moreover, we determined a HU cut-off value of 933 with ROC analysis, which demostrated 84.9% sensitivity and 67.1% specificity for predicting UL. Conclusion This study has shown that we are more likely to encounter postoperative UL in stones with higher HU values. Therefore, we suggest clinicians to inform patients with this type of kidney stones about the probable complication of UL.

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Factors Influencing the Duration of Urine Leakage following Percutaneous Nephrolithotomy

Cited by 5 publications

References 24 publications

A novel nomogram and a simple scoring system for urinary leakage after percutaneous nephrolithotomy

A novel nomogram and a simple scoring system for urinary leakage after percutaneous nephrolithotomy

Study of predictive factors affecting the prolonged urinary leakage after percutaneous nephrolithotomy

Stones hounsfield unit value and predictors of urinary leakage after PCNL

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