Does the presence of hydronephrosis have effects on micropercutaneous nephrolithotomy?

Karatag, Tuna; Buldu, İbrahim; Kaynar, Mehmet; Inan, Ramazan; İstanbulluoğlu, Mustafa Okan

doi:10.1007/s11255-014-0907-7

Cited by 9 publications

(9 citation statements)

References 12 publications

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“…Clinical trials have proven the efficacy and safety of the microperc, especially for isolated lower pole and moderate-sized kidney stones. [3][4][5][6] In our study, in addition to an absence of major complications, stone clearance was achieved using two access tracts in all patients: one for standard PNL and one for microperc. We did not need to perform any additional microperc accesses in our series.…”

Section: Discussionmentioning

confidence: 72%

“…[1] Since its introduction in 2011, micro-percutaneous nephrolithotomy (microperc) has been used increasingly for moderate-sized kidney stones. [2][3][4][5][6] The complete clearance of stones from the kidney is important for preventing recurrence and morbidity in both standard PNL, and microperc, procedures. However, achieving a stone-free status in a single session in cases with complex renal calculi is not always possible.…”

Section: Introductionmentioning

confidence: 99%

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Combined micro-and standard percutaneous nephrolithotomy for complex renal calculi

Buldu

Tepeler

Karatag

et al. 2016

Turkish Journal of Urology

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Objective: We aimed to present the technique of combination of standard percutaneous nephrolithotomy (PNL) with microperc for achieving higher success rates without increasing complication rates in the management of complex renal calculi. Material and methods:The patients who underwent microperc procedure as a complementary procedure to standard PNL for complex kidney stones in two reference hospitals between 2013 and 2015, were evaluated retrospectively.Results: All patients underwent a total of two accesses one for standard PNL and one for microperc. The mean stone size was measured as 54.3 mm. The procedures were completed after an average operative time of 88.2 minutes and fluoroscopy time of 5.3 minutes. Stone free status was achieved in 18 cases (78.2%) and small residual fragments (≤4 mm) were detected in 3 cases (13.1%). Complications were seen in three patients (13%) as hemorrhage in one and postoperative fever in two patients. Conclusion:Despite the limitations of this study, the combination of standard PNL and microperc might reduce the complication rates and increase the success rates when treating complex kidney stones. Future prospective and comparative studies are needed.

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Section: Discussionmentioning

confidence: 72%

Section: Introductionmentioning

confidence: 99%

Combined micro-and standard percutaneous nephrolithotomy for complex renal calculi

Buldu

Tepeler

Karatag

et al. 2016

Turkish Journal of Urology

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“…Most reports on its use are for moderate size stones (10-20 mm) and lower calyceal stones that are difficult to handle using extracorporeal shock wave lithotripsy (ESWL) or retrograde intrarenal surgery (RIRS). 4,[6][7][8]10,12,13,15,16,20,23,[38][39][40] Microperc is also performed for pediatric renal stones, 1,7,18,20,40 pelvic ectopic kidney stones, 4,7,8,20,40 kidney stones following partial nephrectomy, 21 kidney stones in severe kyphoscoliosis, 14,26 bladder stones, 6 stones in the isthmus of a horseshoe kidney, 7,21 and awkward lower calyceal anatomy. 7,21 The ideal scenario for microperc is a single calyceal stone, pelvic stone, or multiple stones parallel to the percutaneous renal tract so that lithotripsy can be completed with a single tract and multiple punctures avoi ded.…”

Section: Discussionmentioning

confidence: 99%

Microperc with Self-Assembled Fr 4.85 Visual Needle and Ureteral Access Sheath

Zhang

Kang

Jiang

et al. 2021

Journal of Investigative Surgery

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Background: Micropercutaneous nephrolithotomy (microperc) is the least invasive among percutaneous nephrolithotripsy (PCNL) procedures. Although microperc has a high stone-free rate and certain advantages over other methods, modifications may be needed to improve the technique. We describe our experience performing microperc using a self-assembled visual needle and ureteral access sheath (UAS). Methods: Between June 2016 and April 2019, the data of 30 patients with kidney stones undergoing microperc with our self-assembled 4.8 Fr visual needle combined with a UAS was retrospectively analyzed. Patients were placed in an obilique spine lithotomy position. Results: Two cases were excluded: one due to conversion to mini PCNL and the other required flexible ureteroscopy during microperc. The remaining 28 cases included 18 men and 10 women, age 38.4 ± 7.5 years, stone size 1.7 ± 0.4 cm, and stone density on CT 969 ± 233 HU. Operative time was 47 ± 9.9 minutes, visual analogue scale score of tract pain on postoperative day 1 was 2.5 ± 1.0, hemoglobin decrease was 6.4 ± 1.0 g/L, and hospital stay was 3.1 ± 0.8 days. There was 1 case of fever and urinary infection, 2 cases of hematuria, and 1 case of flank pain. All symptoms resolved after conservative or antibiotic treatment. On postoperative day 1, 12 (42.9%) caseswere stone-free. The stone-free rates at postoperative month 1 and 3 were 92.9% (26/28) and 100% (28/28), respectively. Conclusions: Our self-assembled visual needle and UAS instrument is effective for microperc. Use of the UAS may improve the operative outcome.

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“…Karalar et al 8 found that patients with thicker renal parenchyma had higher PNL success rate in their study conducted with 216 patients underwent PNL operation. Karatag et al 9 investigated the effect of hydronephrosis on microPNL results. They have reported the success rate of microPNL as 91.3% and that the presence of hydronephrosis had no effect on the results of PNL.…”

Section: Discussionmentioning

confidence: 99%

Effects of severe hydronephrosis on the outcomes of percutaneous nephrolithotomy with one-shot dilation method

Miçooğulları¹,

Yücel²,

Sueluzgen³

et al. 2021

Urologia

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Objective: To investigate the effect of the presence of severe hydronephrosis on percutaneous nephrolithotomy (PNL) outcome in patients who underwent PNL operation with one-shot dilatation technique. Materials and methods: Medical data of 989 patients underwent PNL operation in our clinic between 2012 and 2018 were retrospectively reviewed. We included 373 of the patients underwent PNL operation due to renal pelvic stone, who were older than 18 years of age, who did not have any urinary tract abnormality, and had no previous history of open renal stone operation. Patients were divided into two groups according to the presence of severe hydronephrosis and absence of hydronephrosis. These two groups were compared in terms of age, gender, body mass index (BMI), number of stones, stone burden, operation duration, fluoroscopy time, hospitalization time, hemoglobin and creatinine change, complications, and stone free rate. Results: There was no statistically significant difference between the groups in terms of age, gender, BMI, stone number, stone size, stone density, operation duration, fluoroscopy time, and hospitalization duration. The mean change in hemoglobin was 1.5 g/dL in group 1 and 1.1 g/dL in group 2. This difference was statistically significant ( p = 0.006). Postoperative blood transfusion was required for 3 patients (2.1%) in group 1 and 12 patients (5.1%) in group 2. This difference was statistically significant ( p < 0.001). Conclusion: Only the presence of severe hydronephrosis was found to be associated with the change in hemoglobin and postoperative blood transfusion.

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Does the presence of hydronephrosis have effects on micropercutaneous nephrolithotomy?

Abstract: The presence of hydronephrosis does not affect success rates and operative time in micro-PNL procedures significantly. Micropercutaneous nephrolithotomy is technically feasible and efficacious both in hydronephrotic and non-hydronephrotic kidneys.

Cited by 9 publications

References 12 publications

Combined micro-and standard percutaneous nephrolithotomy for complex renal calculi

Combined micro-and standard percutaneous nephrolithotomy for complex renal calculi

Microperc with Self-Assembled Fr 4.85 Visual Needle and Ureteral Access Sheath

Effects of severe hydronephrosis on the outcomes of percutaneous nephrolithotomy with one-shot dilation method

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