Complications

Blood clot in the lungs (pulmonary embolism)
Cardiogenic shock
Congestive heart failure
Damage extending past heart tissue (infarct extension)
Damage to heart valves or the wall between the two sides of the heart
Inflammation around the lining of the heart (pericarditis)
Irregular heart beats, including ventricular tachycardia and ventricular fibrillation
Side effects of drug treatment