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Forced Diuresis After Flexible Ureteroscopy for Medium-Sized Renal Stones

NCT07336485 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 2000

Last updated 2026-01-13

No results posted yet for this study

Summary

This randomized controlled clinical trial evaluated whether furosemide-assisted forced diuresis during flexible ureteroscopy reduced the residual fragment rate and improved the stone-free rate after flexible ureteroscopy for management of medium sized renal stones measuring up to 30 millimeters. Adult patients undergoing flexible ureteroscopy for renal stones were randomized into two parallel groups: an experimental group that received intravenous furosemide during the procedure and a control group that received standard perioperative and postoperative care without furosemide. Stone-free status and residual fragments were assessed using non-contrast computed tomography performed four weeks after the procedure, and residual fragments were classified by fragment size. Secondary outcomes included operative time, length of hospital stay, postoperative complications, total urine output in the first 24 hours, and the need for additional treatments for significant residual stones.

Conditions

  • Kidney Stones

Interventions

DRUG

Furosemide

Intravenous furosemide was administered as a total dose of 40 milligrams during the procedure, divided into 20 milligrams given 5 minutes after induction of anesthesia and 20 milligrams given 30 minutes after the start of the procedure.

OTHER

Standard Care After Flexible Ureteroscopy Without Furosemide

Participants received standard perioperative and postoperative management after flexible ureteroscopy without administration of furosemide or any other diuretic medication.

Sponsors & Collaborators

  • Ain Shams University

    lead OTHER

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Model
PARALLEL

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2025-01-01
Primary Completion
2025-07-01
Completion
2025-07-01

Countries

  • Egypt

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07336485 on ClinicalTrials.gov