[Study of morphofunctional characteristics of the myocardium in ischemic heart disease using ultrasonic methods]
Insights
Ultrasonic imaging reveals changes in heart tissue density after myocardial infarction (MI). Scar tissue shows increased echo density, while acute MI initially decreases then increases density, impacting diastolic function.
Area of Science:
- Cardiology
- Medical Imaging
- Biomedical Engineering
Background:
- Coronary artery disease (CAD) and myocardial infarction (MI) significantly impact heart function.
- Accurate characterization of heart tissue is crucial for diagnosing and managing cardiac conditions.
- Ultrasonic imaging offers a non-invasive method for assessing myocardial tissue properties.
Purpose of the Study:
- To investigate ultrasonic heart tissue characterization in normal subjects and patients with coronary artery disease.
- To analyze regional differences in myocardial echo density in patients with chronic coronary disease and acute myocardial infarction.
- To explore the clinical implications of ultrasonic tissue characteristics in coronary heart disease.
Main Methods:
- Echocardiography was used to assess myocardial echo density in different patient groups.
- Subjects included normal individuals, patients with chronic coronary disease (angina), and acute myocardial infarction (MI).
- Regional echo density was compared between normal myocardium, scar tissue, and acutely damaged areas.
Main Results:
- Normal subjects and patients with angina showed no regional differences in myocardial echo density.
- Post-MI patients exhibited increased echo density in scar regions.
- During acute MI, echo density initially decreased in damaged areas, followed by an increase later in the course; some patients showed no density increase and developed diastolic dysfunction.
Conclusions:
- Ultrasonic echo density changes can characterize myocardial scar and acute injury in coronary heart disease.
- The pattern of echo density alteration during MI correlates with disease progression and left-ventricular diastolic function.
- Ultrasonic heart tissue characterization provides valuable insights into the pathophysiology and clinical outcomes of coronary patients.
Abstract:
Ultrasonic heart tissue characterization was performed in normal subjects and patients with chronic coronary disease and acute myocardial infarction (MI). In normal subjects and anginal patients, no regional differences in myocardial echo density were found, while postinfarction patients showed an increase of echo density in the region of the scar. During MI, initial fall of echo density in the damaged area at the onset of the disease was followed by an increase of echo density later in the course of MI. In some MI patients, there was virtually no increase of echo density in the damaged area throughout hospital stay. These patients also developed severe left-ventricular diastolic dysfunction. The significance and clinical implications of ultrasonic heart tissue characteristics in coronary patients are discussed.
