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Free fatty acids during acute myocardial infarction
Progress in Cardiovascular Diseases
|January 1, 1971
Summary
Elevated free fatty acids (FFA) are linked to serious heart issues like arrhythmias and sudden death following myocardial infarction. Lowering FFA levels may offer a new therapeutic strategy for heart attack management.
Area of Science:
- Cardiology
- Biochemistry
Background:
- Free fatty acids (FFA) elevate in plasma post-myocardial infarction onset.
- High FFA levels (>1200 μEq./L) correlate with increased incidence of ventricular arrhythmias, heart block, and sudden death.
Purpose of the Study:
- To investigate the direct arrhythmogenic potential of elevated FFA in myocardial infarction.
- To explore the role of FFA in cardiac dysfunction during hypoxia.
Main Methods:
- Experimental myocardial infarction induced in dogs.
- Measurement of plasma FFA levels and assessment of cardiac arrhythmias.
Main Results:
- High FFA levels were shown to directly induce arrhythmias in experimental myocardial infarction.
- Catecholamines are identified as primary mobilizers of FFA during acute myocardial ischemia.
Conclusions:
- High FFA concentrations exert a detrimental effect on heart function during hypoxia, irrespective of their cause.
- Therapeutic strategies targeting FFA reduction and glucose provision to hypoxic myocardial cells are proposed for managing arrhythmias and myocardial infarction.