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Effects of Flexible Ureteroscopy on Renal Blood Flow

NCT03023488 · Status: COMPLETED · Phase: NA · Type: INTERVENTIONAL · Enrollment: 46

Last updated 2018-07-06

Study results available
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Summary

Aim of this study is to investigate the effects of increased intrarenal pressure during flexible ureteroscopy on renal blood flow.

Patients undergoing flexible ureteroscopy (F-URS) and laser lithotripsy for kidney stones according to European Association of Urology (EAU) guidelines on Urolithiasis will be included in the study after having signed an informed consent form. The pre- and post-operative evaluation and management will be performed according to EAU Guidelines on Urolithiasis. Additionally, as a non-invasive test, bilateral renal power Doppler US will be performed to patients pre- and post-operatively. The pre-operative Doppler US will be performed 2 days prior to surgery and the post-operative Doppler US will be performed in the first 24 hours following surgery. The changes on blood flow in renal artery and arcuate artery will be recorded.

Conditions

  • Circulatory; Change

Interventions

PROCEDURE

flexible ureteroscopy

Flexible ureteroscopy is an endourological procedure performed for kidney stones. The flexible ureteroscope is a device used to reach the renal cavities through the natural urinary tract in a retrograde fashion. During the operation, irrigation fluid is used to expand the cavities to provide space for movement of the device and also to provide clear vision.

DEVICE

Doppler Ultrasound examination

peak systolic velocities (PSV) and end diastolic velocities (EDV) of the arteries will be measured and then resistive index (RI) and pulsatility index (PI) will be calculated.

DEVICE

laser lithotripsy

The laser fiber extending into the cavities through the working channel of the ureteroscope is used to fragment the stones. Laser energy is generated by the laser machine and transmitted to the stones via the laser fiber.

Sponsors & Collaborators

  • Marmara University

    lead OTHER

Principal Investigators

  • Tarik Emre Sener, Urologist · Marmara University, School of Medicine, Department of Urology

Study Design

Allocation
NA
Purpose
DIAGNOSTIC
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
18 Years
Max Age
65 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2016-02-29
Primary Completion
2016-10-31
Completion
2016-12-31

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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 NCT03023488 on ClinicalTrials.gov