Only quickly restoring the blood flow can reduce the amount of heart muscle that will die. At times, the walls of the systemic arteries become weakened. When this occurs, the wall may balloon outward, much like a weak spot in the radiator hose. This called an aneurysm, and is an extremely dangerous condition. Like a radiator hose under pressure, the wall can rupture.
Blood can then spill out of the circulatory system into the body cavity.
If an aneurysm ruptures in the aorta, death is almost certain. Excellence The systemic veins also can have problems. When the valves in the veins break down, blood can pool in the lower legs, causing varicose veins. Clots can also form in veins of the legs. These clots can break loose and flow to the lungs, causing a pulmonary embolism and possible death.