SWE in Assessment of CKD Patients

Feasibility of Shear Wave Elastography in Assessment of Renal Stiffness in Chronic Kidney Diseased Patients

Elastography is a developing technique to assess tissue elasticity. It is software that can be integrated to the ultrasonography machines. Shear wave Elastography (SWE) is an Elastography technique that does not require external pressure on the tissue and supplies quantitative data. It uses real-time short-duration acoustic push pulse to generate shear waves that propagate perpendicular to the main ultrasound beam. When the waves hit the targeted tissue, the tissue is "pushed" in the direction of propagation, causing it to temporarily deform or displace. The ultrasound scanner can monitor the tissue displacement, measuring the time-to-peak displacement and the recovery time. Shear wave velocity increases in diseased tissues, which can be significantly stiffer than normal ones. The parameters are expressed in pressure units of kilopascals (kPa) and velocity (m s-1). SWE have been used to study breast, thyroid, prostate and liver diseases. However, the application of SWE in assessment of renal fibrosis in CKD patients is still unclear.

Study Overview

• Status: Not yet recruiting
• Conditions: Elastography ,CKD Patients

• Study Type: Observational
• Enrollment (Estimated): 54

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Adult; Older Adult
• Accepts Healthy Volunteers: Yes

• Sampling Method: Probability Sample

Study Population

CKD patients which ages from 18 to 75 years old

Description

Inclusion Criteria:

• The patients are those older than 18 years diagnosed with CKD based on the KDIGO (Kidney Disease Improving Global Outcomes) definition i.e. eGFR less than 60 mL/min and/or the presence of markers of kidney damage (pathological albuminuria of at least 30 mg per 24 hours or proteinuria, hematuria, casts) persisting for more than 3 months.

Exclusion Criteria:

• Patients whose BMI >35kg/m 2 Any condition that precludes visualization of the kidney by ultrasound or transmission of shear waves as pregnancy or marked ascites patients with surgical kidney problems like hydro or pyonephrosis patients unwilling to complete the study. Patients with a history of renal replacement therapy (hemodialysis, peritoneal dialysis) , renal transplant, or acute kidney injury within the last 3 months Patients with cystic kidney disease Patients with renal masses

Study Plan

How is the study designed?

Number of groups / cohorts

2

Cohorts and Interventions

Group / Cohort
Normal subjects
Diseased subjects

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Time Frame
The primary outcome of the study is the difference in renal SWE values between normal subjects and CKD patients .	From 2 to 3 years

Collaborators and Investigators

• Sponsor: Assiut University

Study record dates

Study Major Dates

• Study Start (Estimated): October 25, 2023
• Primary Completion (Estimated): October 25, 2024
• Study Completion (Estimated): October 24, 2025

Study Registration Dates

• First Submitted: July 25, 2023
• First Submitted That Met QC Criteria: August 3, 2023
• First Posted (Actual): August 14, 2023

Study Record Updates

• Last Update Posted (Actual): August 14, 2023
• Last Update Submitted That Met QC Criteria: August 3, 2023
• Last Verified: July 1, 2023

More Information

Terms related to this study

• Other Study ID Numbers: Renal Elastography

Drug and device information, study documents

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