Effect of Nephrostomy on Relative Function of Obstructed Kidney

The Effect of Percutaneous Nephrostomy Application on Obstructed Kidneys With Relative Function of 10% or Less In Technetium-99m Dimercaptosuccinic Acid (DMSA) Scintigraphy

Urinary tract obstruction is a serious health problem due to kidney damage. Relative renal function has an important role in the treatment of obstructed kidneys. Nephrectomy can be recommended when the relative renal function is 10% or less in radionuclide examinations. Recently, however, nephron sparing approaches have come to the fore. This indicated the need to evaluate the possibility of recovering the function of the kidney before nephrectomy. The aim of this study is to compare relative functions of obstructed kidneys in technetium 99m dimercaptosuccinic acid scintigraphy (DMSA) before and 2 weeks after nephrostomy tube.

Study Overview

• Status: Completed
• Conditions: Obstructive Uropathy
• Intervention / Treatment: Procedure: Percutaneous nephrostomy

Detailed Description

Obstructive uropathy is one of the most important causes of acute renal injury and end-stage renal failure. obstruction of urine flow increases the intratubular pressure. This pressure increase causes decrease in renal blood flow and starts the inflammatory process. In the first few hours after total ureter obstruction, due to the increase in intratubular pressure glomerular filtration ceases and tubular transport is markedly decreased. Long lasting obstruction results in renal fibrosis and end stage renal damage. Basically obstructive uropathy leading to irreversible renal damage and loss of renal function is the main indication for simple nephrectomy. Serious renal parenchymal damage is defined as non-functioning kidney having relative renal function (RRF) 10% or less in the literature. But recently in some studies it was suggested that by applying the nephrostomy catheter, ability of kidney to regain function can be evaluated before nephrectomy. So, possibility of gaining function should be kept in mind. In this study effect of percutaneous nephrostomy tube on serum creatinine, blood urea nitrogen (BUN) and RRF in obstructed kidney with RRF 10% or less. Before and 2 weeks after percutaneous nephrostomy, serum creatinine, ure and RRF in DMSA was recorded and compared.

• Study Type: Interventional
• Enrollment (Actual): 18
• Phase: Not Applicable

Contacts and Locations

Study Locations

• Turkey
  • Kayseri, Turkey, 38039
    • Department of Urology, Ercieys University, Faculty Of Medicine,

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 14 years to 71 years (Adult, Older Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• Unilateral obstructed kidney with RRF 10% or less
• Unilateral obstructed kidney with grade 2 or more hydroureteronephrosis
• Defined etiology for unilateral obstructed kidney
• estimated glomerular filtration rate (GFR) ≥ 30ml/min
• Approving the nephrostomy procedure

Exclusion Criteria:

• Unilateral obstructed kidney with RRF above 10%
• Estimated GFR <30 ml/min
• diagnosis of bilateral obstructed kidneys
• not approving nephrostomy

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: N/A
• Interventional Model: Single Group Assignment
• Masking: None (Open Label)

Number of Arms

1

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: atrophic kidney; Patients diagnosed with unilateral obstructed kidney with RRF 10% or less underwent application of percutaneous nephrostomy tube on affected side.	Procedure: Percutaneous nephrostomy

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
serum creatinine level 2 weeks after nephrostomy	serum creatinine level 2 weeks after nephrostomy	2 weeks after nephrostomy
Serum BUN level 2 weeks after nephrostomy	Serum BUN level 2 weeks after nephrostomy	2 weeks after nephrostomy
RRF in DMSA 2 weeks after nephrostomy	RRF in DMSA 2 weeks after nephrostomy	2 weeks after nephrostomy

Collaborators and Investigators

• Sponsor: TC Erciyes University
• Investigators: Principal Investigator: Abdullah T Demirtas, Assoc Prof, Erciyes University Faculty of Medicine

Publications and helpful links

General Publications

• Thorup J, Jokela R, Cortes D, Nielsen OH. The results of 15 years of consistent strategy in treating antenatally suspected pelvi-ureteric junction obstruction. BJU Int. 2003 Jun;91(9):850-2. doi: 10.1046/j.1464-410x.2003.04228.x.
• Gupta DK, Chandrasekharam VV, Srinivas M, Bajpai M. Percutaneous nephrostomy in children with ureteropelvic junction obstruction and poor renal function. Urology. 2001 Mar;57(3):547-50. doi: 10.1016/s0090-4295(00)01046-3.
• Ismail A, Elkholy A, Zaghmout O, Alkadhi A, Elnaggar O, Khairat A, Elhassanat H, Mosleh A, Hamad B, Elzomer J, Elkaabi A. Postnatal management of antenatally diagnosed ureteropelvic junction obstruction. J Pediatr Urol. 2006 Jun;2(3):163-8. doi: 10.1016/j.jpurol.2005.07.005. Epub 2005 Aug 26.
• Morduchowicz G, Winkler J, Zabludowski JR, Boner G. Effects of residual renal function in haemodialysis patients. Int Urol Nephrol. 1994;26(1):125-31. doi: 10.1007/BF02768252.
• Wang AY, Wang M, Woo J, Law MC, Chow KM, Li PK, Lui SF, Sanderson JE. A novel association between residual renal function and left ventricular hypertrophy in peritoneal dialysis patients. Kidney Int. 2002 Aug;62(2):639-47. doi: 10.1046/j.1523-1755.2002.00471.x.
• Bargman JM, Thorpe KE, Churchill DN. Relative contribution of residual renal function and peritoneal clearance to adequacy of dialysis: a reanalysis of the CANUSA study. J Am Soc Nephrol. 2001 Oct;12(10):2158-2162. doi: 10.1681/ASN.V12102158.
• Zhang S, Zhang Q, Ji C, Zhao X, Liu G, Zhang S, Li X, Lian H, Zhang G, Guo H. Improved split renal function after percutaneous nephrostomy in young adults with severe hydronephrosis due to ureteropelvic junction obstruction. J Urol. 2015 Jan;193(1):191-5. doi: 10.1016/j.juro.2014.07.005. Epub 2014 Jul 9.
• Aziz MA, Hossain AZ, Banu T, Karim MS, Islam N, Sultana H, Alam MI, Hanif A, Khan AR. In hydronephrosis less than 10 % kidney function is not an indication for nephrectomy in children. Eur J Pediatr Surg. 2002 Oct;12(5):304-7. doi: 10.1055/s-2002-35956.

Study record dates

Study Major Dates

• Study Start (Actual): July 1, 2014
• Primary Completion (Actual): May 31, 2018
• Study Completion (Actual): January 1, 2019

Study Registration Dates

• First Submitted: May 1, 2019
• First Submitted That Met QC Criteria: May 1, 2019
• First Posted (Actual): May 3, 2019

Study Record Updates

• Last Update Posted (Actual): May 3, 2019
• Last Update Submitted That Met QC Criteria: May 1, 2019
• Last Verified: May 1, 2019

More Information

Terms related to this study

• Keywords: DMSA; obstructive uropathy; relative renal function
• Additional Relevant MeSH Terms: Urologic Diseases
• Other Study ID Numbers: 2014/349

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: No

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No