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Clinical Trial Details — Status: Not yet recruiting

Administrative data

NCT number NCT05273905
Other study ID # 2022.3.1
Secondary ID
Status Not yet recruiting
Phase
First received
Last updated
Start date May 2022
Est. completion date March 2025

Study information

Verified date March 2022
Source Chinese University of Hong Kong
Contact n/a
Is FDA regulated No
Health authority
Study type Observational

Clinical Trial Summary

Background: Augmented Velocity Index (Avi) is a new Doppler index which can potentially be used to assess arterial stiffness. The Avi of common carotid artery is found to be associated with arterial stiffness and have initial correlation with cardiovascular risk factors. Avi can be used in any vessels (superficial or deep vessels) where arterial Doppler waveforms can be obtained. Aims: The aims of this study are to investigate the associations of Avi of hepatic artery, renal artery, central retinal artery and internal carotid artery with arterial stiffness and cardiovascular risk factors in a group of apparently normal subjects. Methods: Recruit 350 subjects with no known medical illness or drug treatment for ultrasound examinations and blood tests. In ultrasound examination, the Avi of carotid arteries, hepatic arteries, renal arteries and retinal arteries are recorded. The carotid-femoral pulse wave velocity is also calculated for the assessment of central aortic stiffness. Other important correlates of arterial stiffness including carotid intima-media thickness, fatty liver status, liver stiffness and abdominal fat thickness are assessed in the ultrasound examination. The clinical and laboratory examinations include anthropometric indexes, plasma glucose level, lipid profile, renal function tests, liver function test, urinary albumin creatinine ratio, blood pressure measurement.


Recruitment information / eligibility

Status Not yet recruiting
Enrollment 350
Est. completion date March 2025
Est. primary completion date August 2024
Accepts healthy volunteers Accepts Healthy Volunteers
Gender All
Age group 18 Years to 70 Years
Eligibility Inclusion Criteria: - Apparently healthy volunteers Exclusion Criteria: - Subjects with known medical illnesses including cancer, stroke, cardiovascular disease, diabetes, hypertension, dyslipidaemia, peripheral vascular disease, gout, systemic lupus erythematosus, psoriasis, rheumatoid arthritis and thyrotoxicosis. - Subjects with long term drug use

Study Design


Related Conditions & MeSH terms


Intervention

Diagnostic Test:
Ultrasound derived Avi
Assess the Avi of carotid arteries, hepatic arteries, renal arteries and central retinal arteries.

Locations

Country Name City State
n/a

Sponsors (1)

Lead Sponsor Collaborator
Chinese University of Hong Kong

Outcome

Type Measure Description Time frame Safety issue
Primary Augmented Velocity Index (Avi) Avi of carotid, renal, hepatic and retinal arteries as recorded from the Doppler ultrasound waveforms of those arteries Aug 2022 - May 2024
Secondary Arterial wall thickness, liver stiffness and fatty liver status Intima-media thickness of carotid artery is measured in gray scale ultrasound images; Liver stiffness is assessed by shear wave elastography of ultrasound technique; Fatty liver status is determined by the attenuation imaging of ultrasound Aug 2022 - May 2024
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