Role of Color Doppler Ultrasonography in Assessment of Vascular Access Surveillance in Hemodialysis Patients.

NCT04196478 | Unknown

• 1 other identifier: DUS in vascular accesses
• Study Type: observational
• Target: 120
• Locations: 0 countries
• Sites: N/A

Brief Summary

The aim of this study is to provide an overview of the possible applications of DUS during the maturation and postoperative follow-up of vascular access, with particular emphasis to establish a relationship between doppler Ultrasound parameters including:

1. 1.Flow volume.
2. 2.Outflow vein diameter.
3. 3.Outflow vein depth.
4. 4.Resistive index.

Conditions

Arteriovenous Fistula

Outcome Measures

Primary Outcomes (1)

• Maturation of arteriovenous fistulas

  Assess the role of grey scale and color Doppler US in the early detection of failure in the hemodialysis vascular access. Maturation and monitoring\\ surveillance of arteriovenous fistula.

  6 weeks duration follow up

Interventions

doppler ultrasound DEVICE

a 7.5 MHz ultrasound (US) linear probe is needed, grey-scale ultrasound and Color Doppler and a minimum display facility of the Doppler velocity spectrum for blood flow calculation are mandatory tools.

Eligibility Criteria

• Age: 18 Years+
• Gender Eligibility Details: adult group
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)
• Sampling Method: Probability Sample

Study Population

Sample size was calculated using Epi-Info 7 software. According to the results of previous study conducted at renal dialysis unit of Assiut university hospital (7) the most common complication occurred in haemodialysis access (A-V fistula) was infected A-V access (23.8%). Based on this prevalence the minimum required sample size for current study is 84 patients. Following assumptions were used to calculate this sample: Target population size = 120 (as number of new haemodialysis patients is 100-120 each year). N.B: in this study we will include all eligible cases at renal dialysis unit of Assiut university i.e., patients of last year (total coverage sample)

You may qualify if:

• ESRD patients on dialysis with heamodialysis vascular access with adult age group (18 years and above).

You may not qualify if:

• Patients with chronically occluded vascular access with failed surgical or interventional attempts.

Sponsors & Collaborators

• Assiut University: lead

MeSH Terms

Conditions

Arteriovenous Fistula

Interventions

Ultrasonography, Doppler

Condition Hierarchy (Ancestors)

Arteriovenous Malformations; Vascular Malformations; Cardiovascular Abnormalities; Cardiovascular Diseases; Vascular Fistula; Vascular Diseases; Congenital Abnormalities; Congenital, Hereditary, and Neonatal Diseases and Abnormalities; Fistula; Pathological Conditions, Anatomical; Pathological Conditions, Signs and Symptoms

Intervention Hierarchy (Ancestors)

Ultrasonography; Diagnostic Imaging; Diagnostic Techniques and Procedures; Diagnosis

Study Design

• Study Type: observational
• Observational Model: COHORT
• Time Perspective: CROSS SECTIONAL
• Sponsor Type: OTHER
• Responsible Party: PRINCIPAL INVESTIGATOR
• PI Title: Lina Mohamed Farid

Study Record Dates

• First Submitted: December 2, 2019
• First Posted: December 12, 2019
• Study Start: January 1, 2020
• Primary Completion: January 1, 2021
• Study Completion: January 1, 2021
• Last Updated: December 12, 2019

Record last verified: 2019-12