Heart Blockage: Arterial occlusions occur when the walls of the arteries that provide blood to the heart tissue thicken and stiffen due to the accumulation of plaque. This disorder impairs the ability of blood arteries to provide blood to the heart muscle and can cause chest pain (angina), shortness of breath, and other symptoms. Atherosclerosis, which is the deposition of plaques in arteries, is mostly composed of lipids, cholesterol, and other elements.
