Myocardial Perfusion, Risk Factors, and Coronary Calcium

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: NCT00006502
Recruitment Status : Completed
First Posted : November 17, 2000
Last Update Posted : February 29, 2016
Information provided by:
National Heart, Lung, and Blood Institute (NHLBI)

Brief Summary:
To determine whether an impairment of myocardial perfusion reserve is an early indicator of coronary artery disease.

Condition or disease
Cardiovascular Diseases Coronary Arteriosclerosis Coronary Disease Heart Diseases

Detailed Description:


Impairment of coronary vasofunction is believed to be one of the earliest manifestations of coronary heart disease (CHD). The impact of risk factors such as elevated cholesterol levels, diabetes, hypertension, and smoking on the coronary microcirculation remains largely unknown.


The cross-sectional study will determine whether an impairment of the myocardial perfusion reserve provides a marker of coronary heart disease (CHD) by comparing it to other novel measures of subclinical vascular disease, and by testing its association with risk factors for CHD. The study is ancillary to the Multi-Ethnic Study of Atherosclerosis ("MESA"), which is an NHLBI funded, prospective observational study of the characteristics of subclinical cardiovascular disease, i.e. disease detected non-invasively before it has produced signs and symptoms. In MESA new measures of subclinical disease such as coronary artery calcium and impaired brachial artery reactivity are to be examined to investigate their relationships to well-established risk factors and clinical events. Myocardial perfusion reserve (MPR)is a useful measure of coronary vasofunction that should be included in an evaluation of new measures of subclinical disease. An impaired MPR appears to be a specific early indicator of the functional impairment of the microcirculation in patients with risk factors for coronary artery disease. Magnetic resonance imaging (MRI) will be used as an advanced, quantitative imaging modality to determine in short (20 minute) exams the myocardial perfusion reserve in a group of 400 MESA participants. The study tests the hypothesis that impaired myocardial perfusion reserve indicates the presence of subclinical coronary atherosclerosis and coronary microvascular disease.

The study completion date listed in this record was obtained from the "End Date" entered in the Protocol Registration and Results System (PRS) record.

Study Type : Observational
Study Start Date : September 2000
Actual Study Completion Date : June 2005

Information from the National Library of Medicine

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Ages Eligible for Study:   up to 100 Years   (Child, Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
No eligibility criteria

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): NCT00006502

Sponsors and Collaborators
National Heart, Lung, and Blood Institute (NHLBI)
OverallOfficial: Michael Jerosch-Herold University of Minnesota - Clinical and Translational Science Institute