Haemodynamic and Geometric Factors in Atherosclerosis

Atherosclerosis Clinical Trial

— ANGLE  

Official title:

Influence of Haemodynamic and Geometric Factors on the Onset and Progression of Atherosclerosis

Clinical Trial Details — Status: Active, not recruiting

Administrative data

• NCT number: NCT03044704
• Other study ID #: AN2016-0189 366/4.4
• Status: Active, not recruiting
• Start date: February 6, 2017
• Est. completion date: January 2028

Study information

• Verified date: May 2021
• Source: Medical University Innsbruck
• Contact: n/a
• Is FDA regulated: No
• Study type: Observational

Clinical Trial Summary

The study is a prospective-observational, explorative single-centre cohort study aimed to examine the influence of hemodynamic and geometric parameters on the progression of atherosclerotic alterations in peripheral vessels (carotids, femoral artery). Atherosclerotic alterations (IMT, plaque volume) will be measured with a ultrasound (IMT measurements and 3D quantitative plaque volumetry) and magnetic resonance imaging (MRI). Geometric parameters (e.g. carotid/femoral bifurcation angle, carotid/femoral bifurcation area) are assessed with magnetic resonance imaging (MRI) and also 3D ultrasonography.

A total of 100 patients with an asymmetrical plaque distribution in carotid and femoral arteries will be tested. Only patients who are already enrolled in the "Correlation of Artherosclerotic Plaque Volume and Intima Media Thickness With Soluble P-selectin" (NCT01895725) and who are tested prior for an asymmetrical plaque distribution will be included in this study. MRI will be performed once whereas ultrasound imaging will be be repeated once per year (up to five times) to assess changes in these parameters over time. Also plasma samples will be collected once yearly and tested for traditional and novel cardiovascular risk factors.

The primary endpoint of the planned study will be the correlation between geometrical and hemodynamic parameters as stated above and the progression of atherosclerosis as measured by plaque volume and IMT in the carotid and femoral arteries, respectively.

Secondary endpoints will include the correlation of geometrical and hemodynamic parameters with established (hypertension, smoking, diabetes, dyslipidemia) and novel risk factors (hsCRP, P-selectin, cholesteryl ester transfer protein (CETP), intercellular adhesion molecule-1 (ICAM-1), CETP TaqIb polymorphism), with cardiovascular event rate, plaque localization, plaque morphology and the additional predictive value of geometrical parameters compared to an established risk score (SCORE card).

Recruitment information / eligibility

• Status: Active, not recruiting
• Enrollment: 100
• Est. completion date: January 2028
• Est. primary completion date: November 8, 2019
• Gender: All
• Age group: 30 Years to 85 Years

Eligibility

Inclusion Criteria:

• asymmetrical (side difference) plaque distribution in carotids/femoral arteries which was tested in at least two prior 3D-ultrasound examinations (absolute side difference in carotid arteries = 30 mm3 or in femoral arteries =50 mm3 and relative side difference in carotid arteries/femoral arteries =50% )

Exclusion Criteria:

• actual pregnancy, lactation period, chronic renal insufficiency (GFR<20ml/min)

Related Conditions & MeSH terms

• Atherosclerosis

Locations

Country	Name	City	State
Austria	Medical University of Innsbruck	Innsbruck	Tyrol

Sponsors (1)

Lead Sponsor	Collaborator
Medical University Innsbruck

Country where clinical trial is conducted

Austria, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Correlation between geometrical and hemodynamic parameters and the progression of atherosclerosis	Haemodynamic/geometric parameters will be assessed with MRI and 3D-US. This includes carotid/femoral bifurcation angle, common carotid/femoral area, carotid/femoral bifurcation area, internal and external carotid area, femoral superficial artery area and carotid/femoral bifurcation length. Progression of atherosclerosis will be measured via 3D-US by plaque volume and IMT in the carotid and femoral arteries, respectively.	up to 1 year
Secondary	Correlation of geometrical and hemodynamic parameters with established and novel risk factors.	Secondary endpoint will include the correlation of geometrical and hemodynamic parameters with established (hypertension, smoking, diabetes, dyslipidemia) and novel risk factors (hsCRP, P-selectin, cholesteryl ester transfer protein (CETP), intercellular adhesion molecule-1 (ICAM-1), CETP TaqIb polymorphism), with cardiovascular event rate, plaque localization, plaque morphology and the additional predictive value of geometrical risk constellations compared to an established risk score (SCORE card).	up to 1 year
Secondary	Correlation of geometrical and hemodynamic parameters with cardiovascular event rate	Secondary endpoint will include the correlation of geometrical and hemodynamic parameters with the cardiovascular event rate (MACE-rate, coronary/ femoral surgery/intervention)	1 year
Secondary	Correlation of geometrical and hemodynamic parameters with plaque morphology	Secondary endpoint will include the correlation of geometrical and hemodynamic parameters with the plaque morphology (gray-scale median, Gray-Weale scores, plaque surface state)	up to 1 year