Supine Versus Prone PNL in Pediatric

Urolithiasis Clinical Trial

Official title:

Modified Flank-free Supine Versus Prone PNL in Pediatric Renal Stones: A Prospective Randomized Comparative Trial

Clinical Trial Details — Status: Not yet recruiting

Administrative data

• NCT number: NCT06012864
• Other study ID #: Supine pediatric PNL
• Status: Not yet recruiting
• Phase: N/A
• Start date: August 30, 2023
• Est. completion date: August 30, 2026

Study information

• Verified date: August 2023
• Source: Assiut University
• Contact: mostafa kamel, A L
• Phone: 01061133200
• Email: mostafa075[@]aun.edu.eg
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

To Compare the safety and efficacy of PNL in a modified flank-free supine position versus prone position in pediatric patients

Description:

Incidence of pediatric urolithiasis varies from 5%-15% in developing countries to 1%-5% in the developed ones. The 5-year recurrence rate of about55% (range, 38%-70%). Fernstrom and Johansson first introduced percutaneous nephrolithotomy (PNL) in 1976. Since that PNL has become widely used for multiple indications. Pediatric PNL was done in the prone position with more rapid and easy puncture point determination, wider field for renal puncture, free application of multiple accesses, and avoidance of visceral injuries, especially the colon. PNL in the supine position has several advantages as, similar success rate and a shorter operative time than conventional PNL. The Amplatz sheath is oriented downward, maintaining a low pressure in the renal pelvis and reducing the fluid absorption with rapid drainage of the fragmented stones. Furthermore, it's easier for the anesthesiologist to control the airway and reduce the neural and ophthalmologic pressure lesions than the prone position. Desoky et al in 2012 described the flank-free modified supine position (FFMSP) and claimed that this position overcomes the mechanical limitation of ordinary supine position because of ample space for puncture, dilatation, multiple tracts, and maneuverability of the system with the nephoscope. Moreover, the surgeon can comfortably sit during the operation, and X-ray exposure is reduced because puncture and dilatation are quite perpendicular to the body, and the operator's hands are outside the fluoroscopic field. it's better to do supine PNL in case of retro renal colon. as we see the supine position in pediatric is still under research and few trials about it had been done with no clear recommendation, so we will compare PNL in pediatric age group in modified free flank supine position versus prone position.

Recruitment information / eligibility

• Status: Not yet recruiting
• Enrollment: 100
• Est. completion date: August 30, 2026
• Est. primary completion date: August 30, 2025
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: N/A to 18 Years

Eligibility

Inclusion Criteria:

Age = 18 years old. Renal stones are amenable for PNL with Guy's stone score 1-2.

Exclusion Criteria:

congenital anomalies. skeletal anomalies. bleeding diathesis. active urinary tract infection. Patient refusing participation. Patients with PCN.

Related Conditions & MeSH terms

• Urolithiasis

Intervention

Procedure:
• PNL
percutaneous extraction of the stones in the kidney

Locations

Country	Name	City	State
Egypt	Assiut University Hospital	Assiut

Sponsors (1)

Lead Sponsor	Collaborator
Assiut University

Country where clinical trial is conducted

Egypt, 

References & Publications (11)

Caione P, De Dominicis M, Collura G, Matarazzo E, Nappo SG, Capozza N. Microperc for pediatric nephrolithiasis: technique in valdivia-modified position. Eur J Pediatr Surg. 2015 Feb;25(1):94-9. doi: 10.1055/s-0034-1387939. Epub 2014 Sep 13. — View Citation

De Sio M, Autorino R, Quarto G, Calabro F, Damiano R, Giugliano F, Mordente S, D'Armiento M. Modified supine versus prone position in percutaneous nephrolithotomy for renal stones treatable with a single percutaneous access: a prospective randomized trial. Eur Urol. 2008 Jul;54(1):196-202. doi: 10.1016/j.eururo.2008.01.067. Epub 2008 Feb 4. — View Citation

Desoky EA, Allam MN, Ammar MK, Abdelwahab KM, Elsaid DA, Fawzi AM, Alayman AA, Shahin AM, Kamel HM. Flank free modified supine position: A new modification for supine percutaneous nephrolithotomy. Arab J Urol. 2012 Jun;10(2):143-8. doi: 10.1016/j.aju.2011.12.008. Epub 2012 Mar 7. — View Citation

Desoky EAE, Sakr AM, ElSayed ER, Ali MM. Ultra-Mini-Percutaneous Nephrolithotomy in Flank-Free Modified Supine Position vs Prone Position in Treatment of Pediatric Renal Pelvic and Lower Caliceal Stones. J Endourol. 2022 May;36(5):610-614. doi: 10.1089/end.2021.0557. Epub 2022 Mar 9. — View Citation

Emiliani E, Quiroz YY, Llorens E, Quintian C, Motta G, Villada D, Bujons A. Retrorenal colon in pediatric patients with urolithiasis: Is the supine position for PCNL advantageous? J Pediatr Urol. 2022 Dec;18(6):741.e1-741.e6. doi: 10.1016/j.jpurol.2022.07.028. Epub 2022 Aug 3. — View Citation

Falahatkar S, Moghaddam AA, Salehi M, Nikpour S, Esmaili F, Khaki N. Complete supine percutaneous nephrolithotripsy comparison with the prone standard technique. J Endourol. 2008 Nov;22(11):2513-7. doi: 10.1089/end.2008.0463. — View Citation

Holman E, Khan AM, Flasko T, Toth C, Salah MA. Endoscopic management of pediatric urolithiasis in a developing country. Urology. 2004 Jan;63(1):159-62; discussion 162. doi: 10.1016/j.urology.2003.08.043. — View Citation

Kukreja RA, Desai MR, Sabnis RB, Patel SH. Fluid absorption during percutaneous nephrolithotomy: does it matter? J Endourol. 2002 May;16(4):221-4. doi: 10.1089/089277902753752160. — View Citation

Lao M, Kogan BA, White MD, Feustel PJ. High recurrence rate at 5-year followup in children after upper urinary tract stone surgery. J Urol. 2014 Feb;191(2):440-4. doi: 10.1016/j.juro.2013.09.021. Epub 2013 Sep 16. — View Citation

Liatsikos EN, Kallidonis P, Stolzenburg JU, Ost M, Keeley F, Traxer O, Bernardo N, Perimenis P, Smith AD. Percutaneous management of staghorn calculi in horseshoe kidneys: a multi-institutional experience. J Endourol. 2010 Apr;24(4):531-6. doi: 10.1089/end.2009.0264. — View Citation

Vicentini FC, Torricelli FC, Mazzucchi E, Hisano M, Murta CB, Danilovic A, Claro JF, Srougi M. Modified complete supine percutaneous nephrolithotomy: solving some problems. J Endourol. 2013 Jul;27(7):845-9. doi: 10.1089/end.2012.0725. Epub 2013 Jun 8. — View Citation

* Note: There are 11 references in all — Click here to view all references

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	sucess rate	stone free rate	within 3 months post operative
Secondary	complication rate	rate of patients develop complication	1 month
Secondary	operative time	from the puncture untill the end	intraoperative