- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT00001891
Myocardial Contrast Echocardiography (MCE) to Check for Living and Working Heart Muscle
Assessment of Myocardial Viability Utilizing Myocardial Contrast Echocardiography
Coronary artery disease (CAD) can cause poor blood flow and supply to the heart muscle. It can result in irreversible damage to the heart muscle and poor function. Before treating patients with heart disease it is important to know how well the heart is functioning. Echocardiography is a diagnostic test that can measure heart function. If part of the heart muscle is not working properly due to previous damage, echocardiography can provide information about how much improvement can be expected after treatment (surgery or angioplasty).
The purpose of this study is to compare the accuracy of myocardial contrast echocardiography (MCE) to dobutamine echocardiography to detect the potential for damaged heart muscle to be treated and function in patients with heart disease.
Myocardial contrast echocardiography (MCE) does not use radioactivity. It uses sound waves like standard echocardiography. However, with MCE patients receive an injection of a "contrast agent" directly into the blood stream through a vein. The contrast agent, called Optison, is made of tiny microbubbles smaller than red blood cells. The echocardiogram can detect these microbubbles in the small blood vessels of the heart muscle and allow researchers to find areas of the heart receiving less blood flow than others.
Echocardiography with Dobutamine does not use radioactivity. It uses sound waves, like standard echocardiography. During this echocardiogram patients receive doses of a medication called dobutamine that stimulates the heart to beat stronger and faster. Heart muscle that does not beat stronger after dobutamine is probably dead, usually as a result of a previous heart attack.
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Study Type
Enrollment
Phase
- Phase 3
Contacts and Locations
Study Locations
-
-
Maryland
-
Bethesda, Maryland, United States, 20892
- National Heart, Lung and Blood Institute (NHLBI)
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
- Child
- Adult
- Older Adult
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Patients undergoing evaluation for CAD who show at least two myocardial segments with wall motion abnormalities on a baseline echocardiogram will be offered to participate in this study.
Patients will be adults older than 21 years of age.
No pre-menopausal patients who are lactating, are pregnant or potentially pregnant as judged by history, physical examination, ultrasound or urine pregnancy test.
No one with unstable angina.
No subjects with recent myocardial infarction (less than 1 month).
No one with frequent ectopy which precludes adequate imaging acquisition.
No subjects with significant hypertension (systolic blood pressure greater than 170 mm Hg).
No hypotension with basal sitting systolic arterial pressure less than 100 mm HG confirmed 30 minutes later.
No subjects with sinus tachycardia greater than or equal to 100 beats/minute.
No atrial fibrillation.
No inadequate two-dimensional echocardiographic windows.
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
Collaborators and Investigators
Publications and helpful links
General Publications
- Maisey M. Evaluating the benefits of nuclear cardiology. Q J Nucl Med. 1996 Mar;40(1):47-54.
- Vanoverschelde JL, Wijns W, Depre C, Essamri B, Heyndrickx GR, Borgers M, Bol A, Melin JA. Mechanisms of chronic regional postischemic dysfunction in humans. New insights from the study of noninfarcted collateral-dependent myocardium. Circulation. 1993 May;87(5):1513-23. doi: 10.1161/01.cir.87.5.1513.
Study record dates
Study Major Dates
Study Start
Primary Completion
Study Completion
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
- Myocardial Ischemia
- Cardiovascular Diseases
- Vascular Diseases
- Heart Diseases
- Coronary Disease
- Physiological Effects of Drugs
- Adrenergic Agents
- Neurotransmitter Agents
- Molecular Mechanisms of Pharmacological Action
- Autonomic Agents
- Peripheral Nervous System Agents
- Protective Agents
- Adrenergic Agonists
- Cardiotonic Agents
- Adrenergic beta-Agonists
- Sympathomimetics
- Adrenergic beta-1 Receptor Agonists
- Dobutamine
Other Study ID Numbers
- 990108
- 99-H-0108
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
product manufactured in and exported from the U.S.
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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