Comparison of Ultrafast Echo With Echotracking

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT01743352
Recruitment Status : Completed
First Posted : December 6, 2012
Last Update Posted : October 2, 2015
Information provided by (Responsible Party):
French Cardiology Society

Brief Summary:
The aim is to compare a new technique for assessing mechanical properties of large arteries: the Ultrafast echo with the reference technique, the echotracking. This will be done by studying in parallel hypertensive patients and controls with both techniques and this will revisit old concepts of increased stiffness in hypertensive arteries.

Condition or disease
Essential Untreated Hypertension Healthy Volunteers

Detailed Description:

Ultrafast ECHO is a new non invasive method for assessing stiffness of living tissues. It takes advantage of very fast imaging technologies (up to 20 000 images/sec) to measure the diffusion of pressure waves in the tissues. This pressure wave can be either natural (blood pressure), or generated by an very short ultrasonic impulsion at a given place. By using both modes, it is possible to have a precise cartography of tissue mechanical properties. This technique is applied to solid tissues such as breast or liver, but not yet currently to hollow tissues such as arteries. The aim of the present study is to compare the values of stiffness obtained with Ultrafast ECHO with the reference non invasive technique, the Echotracking, which measures stiffness by assessing the deformation of arteries in response to changes in blood pressure. On the physiological part, we will revisit old concepts of increased stiffness of hypertensive's arteries. Indeed, hypertension is associated with increased stiffness due to recruitement of collagen fibers, but also to chronic remodelling. We have shown before that this remodelling conducts to accumulation of arterial tissue of lesser intrinsic stiffness. The latter finding was done through models based on echotracking measurements. It will be interesting to see whether it holds true when stiffness is directly measured.

Sixty subjects (30 normotensive and30 hypertensives) will be included and studied once. Measurement will be performed in random order 3 time on the common carotid artery on both sides. Aortic stiffness will be measured by pulse wave velocity

Study Type : Observational
Actual Enrollment : 57 participants
Observational Model: Case Control
Time Perspective: Prospective
Official Title: Protocole ULTRAFAST - ECHOTRACKING : Remodelage pariétal et rigidité artérielle Chez l'Hypertendu : Nouvelle étude de Leur Relation Utilisant l'élastographie Par Ultrafast-écho et la séparation Intima/média Par écho-tracking
Study Start Date : March 2013
Primary Completion Date : March 2015
Study Completion Date : August 2015

Hypertension patients
Local common carotid artery pulse wave velocity is compared in patients with hypertension and healthy volunteers.
Healthy Volunteers
Local common carotid artery pulse wave velocity is compared in hypertension patients and healthy volunteers

Primary Outcome Measures :
  1. Local common carotid artery pulse wave velocity [ Time Frame: Day 1 ]

Secondary Outcome Measures :
  1. Common carotid artery Young's modulus (Stiffness of wall material) [ Time Frame: Day 1 ]

Information from the National Library of Medicine

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Ages Eligible for Study:   25 Years to 70 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes
Sampling Method:   Non-Probability Sample
Study Population
Patients presenting Essential untreated hypertension Healthy Volunteers

Inclusion Criteria:

  • hypertension,
  • essential (WHO workup),
  • untreated (> 28 days of treatment interruption, < 6 months of treatment) on insufficiently equilibrated (BP > 140 and/or 90 mmHg)

Exclusion Criteria:

  • Any concomitant severe disease compromising patient's participation or compliance

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT01743352

Hopital Européen Georges Pompidou / Service de Pharmacologie
Paris, France, 75015
Sponsors and Collaborators
French Cardiology Society
Principal Investigator: Stéphane Laurent, MD, PhD Pharmacology Department - Hopital Européen Georges Pompidou - Paris

Responsible Party: French Cardiology Society Identifier: NCT01743352     History of Changes
Other Study ID Numbers: 2012-01
ID - RCB 2012-A01255-38 ( Other Identifier: ANSM )
First Posted: December 6, 2012    Key Record Dates
Last Update Posted: October 2, 2015
Last Verified: October 2015

Keywords provided by French Cardiology Society:
Large arteries
intima media thickness
ultrasound imaging