Final answer:
The right ventricle is most often involved in Inferior infarctions due to blockage in the right coronary artery which supplies this region of the heart.
Step-by-step explanation:
The type of infarction that most often involves the right ventricle is Inferior. Inferior myocardial infarctions typically occur due to a blockage in the right coronary artery (RCA), which supplies blood to the right atrium, parts of both ventricles, and the conduction system of the heart. In an inferior infarction, the right ventricle can be affected because the RCA and its branches, such as the posterior interventricular (descending) artery, provide the majority of blood supply to the superficial portions of the right ventricle and the inferior part of the heart.