Risks Related to Stents. About 1â2 percent of people who have stented arteries develop a blood clot at the stent site. Blood clots can cause a heart attack, stroke, or other serious problems. The risk of blood clots is greatest during the first few months after the stent is placed in the artery.
The heart is a muscular organ in humans and other animals, which pumps blood through the blood vessels of the circulatory system. Blood provides the body with oxygen and nutrients, and also assists in the removal of metabolic wastes.The heart is located in the middle compartment of the mediastinum in the chest.he heart is a muscular organ in humans and other animals, which pumps blood through the blood vessels of the circulatory system. Blood provides the body with oxygen and nutrients, and also assists in the removal of metabolic wastes.
1 Only veins have valves. Arteries have a smaller lume. 2  An artery carries blood away from the heart, while veins transport blood to the heart.  The difference is that an artery brings blood to the body and a vein takes blood to the lungs.