Which condition refers to damage or death of part of the heart muscle due to insufficient blood supply?

Myocardial infarction refers specifically to the damage or death of a section of the heart muscle resulting from a lack of blood supply, typically due to a blockage in the coronary arteries. When blood flow is restricted or stopped, the affected heart tissue does not receive the necessary oxygen and nutrients, leading to injury and eventual necrosis (tissue death). This condition is commonly known as a heart attack and can have severe and life-threatening consequences if not treated promptly.

In contrast, myocardial ischemia describes a state where blood flow to the heart muscle is reduced but not yet severe enough to cause tissue death. Myocarditis refers to inflammation of the heart muscle, often due to viral infections or autoimmune diseases, rather than direct damage due to a lack of blood supply. Myxomatous degeneration pertains to a structural change in the heart valves and does not directly relate to ischemic damage of the heart muscle.