Myocardial Contrast Echocardiography (MCE) to Check for Living and Working Heart Muscle

Completed · Phase 3

Conditions studied: Coronary Disease, Heart Diseases

In brief

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.

Key facts

Study ID
NCT00001891
Run by
National Heart, Lung, and Blood Institute (NHLBI)
People needed
200
Starts
1999-05-01
Expected to finish
2001-03-01
Last updated by the study team
2008-03-04

Who can join

Age: any. Sex: any. Healthy volunteers: not accepted.

Where it is running

Full record on ClinicalTrials.gov

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