[Left ventricular function in patients who have had a myocardial infarct, based on echocardiographic study data]

Area of Science:

• Cardiology
• Medical Imaging

Background:

• Myocardial infarction (MI) survivors often experience ventricular hemodynamic disturbances.
• Echocardiography is crucial for assessing cardiac function post-MI.

Purpose of the Study:

• To evaluate ventricular hemodynamic disturbances in myocardial infarction survivors using combined echocardiography.
• To correlate echocardiographic findings with clinical parameters and infarction location.

Main Methods:

• Combined echocardiographic study including B-scanning and M-mode.
• Analysis of left ventricular volumes, ejection fraction, delta S, and VCF.
• Assessment of isovolumic relaxation, contraction, and filling times.
• Correlation with electrocardiography (T interval) and phonocardiography.

Main Results:

• Increased left ventricular end-diastolic and end-systolic volumes observed.
• Markedly decreased ejection fraction, delta S, and VCF in MI survivors.
• Pronounced left ventricular pump and contractility dysfunction in transmural and anterior MIs.
• Prolonged isovolumic relaxation and contraction in posterior wall hypokinesia.
• Correlation between prolonged isovolumic relaxation and T interval.
• Thinning of hypokinetic walls during ejection and cardiac cycle.
• Systolic murmur post-MI indicated mitral valve insufficiency and decreased contractility.

Conclusions:

• Combined echocardiography effectively evaluates ventricular hemodynamic disturbances post-MI.
• Specific echocardiographic parameters correlate with infarct location and severity.
• Findings highlight the impact of MI on left ventricular function and potential valvular complications.