What effect does blockages in the coronary arteries have on the heart?

Blockages in the coronary arteries directly lead to myocardial ischemia, which is a condition where the heart muscle does not receive enough blood and oxygen to function properly. This lack of adequate perfusion can occur due to a buildup of plaque leading to atherosclerosis, which narrows the arteries. When these blockages occur, the heart may not receive sufficient oxygen during periods of increased demand, such as during physical activity or stress, resulting in chest pain or discomfort (known as angina) and potentially leading to more serious conditions such as a heart attack.

Understanding how coronary artery blockages impact blood flow helps clarify the significance of protecting cardiovascular health through lifestyle choices and medical interventions.