Which condition may develop after an acute myocardial infarction and is due to a conduction delay?

Following an acute myocardial infarction, a bundle branch block can occur due to the damage to the cardiac tissue. Myocardial infarction disrupts the normal electrical conduction pathways of the heart, especially in areas supplied by occluded coronary arteries. When the bundle branches, which are part of the conduction system that carries electrical impulses to the ventricles, are compromised, it results in a conduction delay characterized as a bundle branch block.

This condition can manifest as a delay in the depolarization of either the right or left ventricle, which can be evident on an electrocardiogram (ECG) by specific changes in the QRS complex. In the context of post-myocardial infarction complications, bundle branch block is particularly notable because it reflects underlying cardiac damage and adds to the risks of further arrhythmias and complications.

The other conditions listed, such as atrial fibrillation, ventricular tachycardia, and paroxysmal supraventricular tachycardia, are typically associated with different mechanisms or trigger points rather than specifically as a direct consequence of conduction delay following myocardial infarction.