Differences in Urine NGAL Levels in Patients Undergoing RIRS With or Without Ureteral Access Sheath

November 15, 2019 updated by: Ozcan Kilic, Selcuk University

Differences in Urine Neutrophil Gelatinase-Associated Lipocalin (NGAL) Levels in Patients Undergoing Retrograde Intrarenal Surgery (RIRS) With or Without Ureteral Access Sheath (UAS)

This study will include patients aged between 18 and 65 who will undergo retrograde infrarenal surgery (RIRS) due to renal stone(s). A total of 60 patients (male or female) will be recruited, and will be randomized into 2 groups consisting of 30 patients in each group. The first group of patients will undergo RIRS with a ureteral access sheath (UAS) positioned prior to surgery; and the second group will undergo RIRS without UAS. As use of UAS decreases the pressure in the renal pelvis during RIRS, it is aimed to evaluate whether using UAS or not affects the kidney functions. besides the routine kidney function tests, namely urea and creatinine, neutrophil gelatinase-associated lipocalin (NGAL) (a more specific and early marker of kidney function) will be used to assess the differences in the kidney functions. Preoperative blood urea and creatinine levels and urine NGAL levels will be studied for all patients. After the surgery, blood urea and creatinine levels will be again studied as well as urine NGAL levels at postoperative 2nd hour, 72nd hour and 1st week.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

60

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Turkey
      • Konya, Turkey, 42075
        • Selcuk University, School of Medicine, Department of Urology

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years to 65 years (ADULT, OLDER_ADULT)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Being between 18-65 years old
  • Having an indication of retrograde infrarenal surgery (RIRS) due to kidney stone

Exclusion Criteria:

  • Patients with uncontrolled diabetes mellitus and diabetic nephropathy
  • Patients with blood pressure > 140/80 mmHg despite regular use of antihypertensive agent(s)
  • Patients with chronic kidney failure who need dialysis
  • Patients who have had prerenal, renal or postrenal acute kidney failure 3 months or much earlier
  • Patients who have had pyelonephritis 3 months or much earlier
  • Patients younger than 18 years or older than 65 years
  • Patients who have undergone a kidney surgery within the last 3 months and have abnormal kidney function tests
  • Patients with a concomitant ureter stone who will undergo an endoscopic ureter stone treatment at the same session

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: TREATMENT
  • Allocation: RANDOMIZED
  • Interventional Model: PARALLEL
  • Masking: NONE

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
ACTIVE_COMPARATOR: UAS (+)
RIRS with ureteral access sheath: A ureteral access sheath (UAS) will be positioned into the ureter of the patient prior to the insertion of the flexible ureterorenoscope (RIRS).
Device: RIRS with ureteral access sheath
Ureteral access sheath will be used during RIRS.
EXPERIMENTAL: UAS (-)
RIRS without ureteral access sheath: A ureteral access sheath (UAS) will not be positioned into the ureter of the patient prior to the insertion of the flexible ureterorenoscope (RIRS).
Device: RIRS without ureteral access sheath
Ureteral access sheath will not be used during RIRS.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Urine NGAL level (ng/mL)
Time Frame: Within the first 7 days after surgery (RIRS)
Determination of any impairment in renal function when ureteral access sheath is not used during RIRS by measuring urine NGAL level.
Within the first 7 days after surgery (RIRS)

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Blood urea level (mg/dL) and creatinine level (mg/dL)
Time Frame: Within the first 7 days after surgery (RIRS)
Determination of any impairment in renal function when ureteral access sheath is not used during RIRS by measuring blood urea and creatinine levels.
Within the first 7 days after surgery (RIRS)

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Selcuk University

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

June 1, 2015

Primary Completion (ACTUAL)

March 1, 2016

Study Completion (ACTUAL)

March 1, 2016

Study Registration Dates

First Submitted

June 24, 2015

First Submitted That Met QC Criteria

June 25, 2015

First Posted (ESTIMATE)

June 30, 2015

Study Record Updates

Last Update Posted (ACTUAL)

November 18, 2019

Last Update Submitted That Met QC Criteria

November 15, 2019

Last Verified

November 1, 2019

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • SU-RIRS-UAS-02

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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