Myocardial infarction. A myocardial infarction is also called a heart attack, and occurs when a coronary artery gets blocked and can no longer provide sufficient oxygen to the tissues of the heart. This causes some of the muscle cells in the heart to die (necrosis), which severely weakens the heart’s ability to pump blood. After the heart attack, the dead tissue is replaced by a scar, which permanently affects the strength of the heart.
Coronary heart disease is a redundant phrase – coronary disease is the same thing as heart disease. And this is a general category that includes myocardial infarction as well as any other kind of heart disease. CVR stands for cardiovascular reactivity, which refers to the way a person’s heart responds to stress. And <3 pains is an informal emoji.