What event occurs when there is a blockage preventing the heart from receiving oxygen-rich blood?

A heart attack occurs when there is a blockage in one or more of the coronary arteries, which supply oxygen-rich blood to the heart muscle. This blockage can occur due to various factors, such as the buildup of plaque (comprised of fat, cholesterol, and other substances). When the heart muscle is deprived of oxygen, it can begin to suffer damage, which can lead to serious health consequences or even death if not treated promptly. Recognizing the symptoms of a heart attack, which may include chest pain, shortness of breath, and discomfort in the arms, neck, or jaw, is crucial for initiating immediate medical intervention.

In contrast, a stroke involves an interruption of blood flow to the brain rather than the heart. Arrhythmia refers to irregular heartbeats but does not specifically pertain to an obstruction of blood flow. Heart failure is a condition where the heart is unable to pump effectively, but it is not directly caused by a blockage of blood supply.