Heart, Blood, Circulation

Blood clots consist of blood cells and fibrin strands that form to stop the flow of blood after an injury. Blood clots are vital for wound healing. If blood was not able to clot, death would occur from excessive bleeding from a simple cut.

However, in certain conditions, the inappropriate formation of blood clots in vessels or organs of the body can occur, leading to a potentially extremely dangerous situation. When blood clots form within arteries and veins, they obstruct the flow of blood, which can lead to a heart attack or stroke. Blood clots formed after surgery or due to a traumatic injury may also be life-threatening.

Arteriosclerosis is one of the most common diseases of the arteries. This disease occurs when plaque (which is made up of cholesterol, fibrin, platelets and other substances) forms on the walls of the arteries and obstructs the normal flow and circulation of blood. The arteries become narrowed and the walls lose their elasticity, causing blood flow to be reduced.

Arrhythmias are fairly common. Most people have had at least one experience where it feels as if the heart has skipped a beat, or has given an unexpected flutter. For many, the experience is usually not cause for concern. However, while many arrhythmias are harmless, some can be extremely dangerous and require medical treatment.