Diagnostic Utility of Contrast Echocardiography for Detection of LV Thrombi Post ST Elevation Myocardial Infarction

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

250 participants

Study Classification

OBSERVATIONAL

Study Start Date

2007-03-31

Study Completion Date

2015-01-31

Brief Summary

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This is a cross-sectional study of post myocardial infarction patients which is designed to determine the prevalence of left ventricular thrombi (blood clots) using non-contrast echocardiography and to compare this with the prevalence of left ventricular thrombi using contrast echocardiography. Secondary aims of this study are (1) to identify clinical and imaging correlates of left ventricular thrombi, and (2) to compare quantitative measurements of left ventricular chamber size, function, and myocardial mass using contrast and non-contrast echocardiography.

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Detailed Description

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People that experience heart attacks ("myocardial infarctions") are at increased risk for stroke, possibly due to formation of blood clots ("left ventricular thrombi"), which may break loose from the heart and travel to other organs. While echocardiography is a test commonly employed for thrombus detection, prior studies have yielded heterogeneous findings regarding prevalence and predictors. Echocardiographic contrast ("perflutren lipid microspheres") are FDA approved imaging agents that have been shown to improve thrombus detection in selected populations. However, the decision to use contrast is often predicated upon results of non-contrast echocardiography, a diagnostic strategy that hasn't been well studied. This study is designed to test whether echocardiographic contrast improves thrombus detection following myocardial infarction. Participants will undergo non-contrast and contrast echocardiography. These will be compared for identification of thrombi and assessment of cardiac size and function. Clinical features and results of other diagnostic tests will also be reviewed in order to study whether these predict thrombus risk. Participants will be contacted at regular intervals by study investigators to determine whether thrombi identified by contrast or non-contrast echocardiography predict risk for stroke or cardiac events. Findings from this study may improve detection of thrombi, thereby improving treatment for patients following myocardial infarction.

Conditions

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Thrombus Myocardial Infarction

Study Design

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Observational Model Type

COHORT

Study Time Perspective

PROSPECTIVE

Study Groups

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A

The study population will consist of patients who are admitted to The New York Presbyterian Hospital-Weill Medical College of Cornell University (NYP-WMC) with ST elevation myocardial infarctions (STEMI). STEMI will be established based on standard clinical and ECG criteria.

No interventions assigned to this group

Eligibility Criteria

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Inclusion Criteria

* all patients who are admitted to The New York Presbyterian Hospital-Weill Medical College of Cornell University (NYP-WMC) with ST elevation myocardial infarctions

Exclusion Criteria

* contraindications to MRI at time of planned imaging (e.g. metallic contra-indication, pacemaker, implantable cardiac defibrillator, cochlear implants, aneurysm clips intolerance of the imaging protocol due to NYHA IV heart failure or CCS class IV angina)
* known allergy/contra-indications to gadolinium or echo contrast agents (i.e. known intracardiac shunt, severe reactive airway disease)
* known pregnancy

Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes