A patient with extensive myocardial infarction has developed heart failure. What pathogenetic mechanism contributed to the development of heart failure in the patient?

Answer options

1. Acute cardiac tamponade
2. Volume overload
3. Pressure overload
4. Myocardial reperfusion injury
5. Reduction in the mass of functioning myocardiocytes

Explanation

Infarction occurs as a result of decreased blood flow to the myocardium, after infarction a scar (fibrous tissue) is present on the affected part. These parts can no longer function i.e contract.