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Hemodynamic changes in left ventricular function during acute coronary insufficiency: a Doppler echocardiographic
F Cacciapuoti1, M D'Avino, D Lama
1Department of Geriatrics, First Faculty of Medicine, Naples University, Napoli, Italy.
Echocardiography (Mount Kisco, N.Y.)
|April 9, 1991
Summary
Doppler echocardiography effectively assesses left ventricular hemodynamic changes in acute coronary syndromes. This imaging technique aids in identifying complications like septal rupture and mitral regurgitation.
Area of Science:
- Cardiology
- Medical Imaging
- Echocardiography
Background:
- Acute coronary syndromes, including angina and acute myocardial infarction, cause significant left ventricular (LV) hemodynamic alterations.
- Early and accurate assessment of LV function and potential complications is crucial for patient management.
Purpose of the Study:
- To evaluate the utility of Doppler echocardiography in assessing left ventricular hemodynamic changes in patients with angina and acute myocardial infarction.
- To determine the effectiveness of color Doppler in identifying early morphological complications of acute myocardial infarction.
Main Methods:
- Doppler echocardiography was performed on 12 patients with angina and 32 with acute myocardial infarction at admission and during recovery.
- Left ventricular contractility was assessed using systolic aortic flow spectrum parameters (aortic velocity maximum, time to peak/left ventricular ejection time ratio, cardiac output).
- Left ventricular diastolic filling was evaluated via transmitral flow, analyzing E-wave and A-wave velocities and the E/A ratio. Color Doppler was used to identify morphological complications.
Main Results:
- Left ventricular contractility was significantly reduced in both angina and acute myocardial infarction patients upon admission, with slight improvement during recovery.
- Acute myocardial infarction patients showed diastolic dysfunction (decreased E-wave, increased A-wave, inverted E/A ratio) that normalized upon stabilization.
- Color Doppler identified ventricular septal rupture in 5/12 patients and mitral regurgitation in 7/12 patients with acute myocardial infarction and a new murmur, providing semi-quantitative assessment.
Conclusions:
- Doppler echocardiography is a valuable tool for evaluating left ventricular hemodynamic changes in acute coronary syndromes.
- Color Doppler echocardiography is effective in detecting and semi-quantifying early morphological complications of acute myocardial infarction, such as septal rupture and mitral regurgitation.