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EMS Chapter23 Bleed

Emergency Care & Transp. 10th Edition 2011 Jones & Bartlett

TermDefinition
aorta The main artery that receives blood from the left ventricle and delivers it to all the other arteries that carry blood to the tissues of the body.
arterioles The smallest branches of arteries leading to the vast network of capillaries.
artery A blood vessel, consisting of three layers of tissue and smooth muscle that carries blood away from the heart.
capillaries The small blood vessels that connect arterioles and venules; various substances pass through capillary walls, into and out of the interstitial fluid, and then on to the cells.
coagulate To form a clot to plug an opening in an injured blood vessel and stop bleeding.
contusion A bruise from an injury that causes bleeding beneath the skin without breaking the skin.
ecchymosis Bruising or discoloration associated with bleeding within or under the skin.
epistaxis A nosebleed.
hematemesis Vomited blood.
hematoma A mass of blood in the soft tissues beneath the skin.
hemophilia A congenital abnormality in which the body is unable to produce clots, which results in uncontrollable bleeding.
hemoptysis Coughing up blood.
hemorrhage Bleeding.
hypoperfusion A condition that occurs when the level of tissue perfusion decreases below that needed to maintain normal cellular functions; also called shock.
hypovolemic shock A condition in which low blood volume, due to massive internal or external bleeding or extensive loss of body water, results in inadequate perfusion.
melena Black, foul-smelling, tarry stool containing digested blood.
perfusion Circulation of blood within an organ or tissue in adequate amounts to meet current needs of the cells.
pressure point A point where a blood vessel lies near a bone.
shock A condition in which the circulatory system fails to provide sufficient circulation to enable every body part to perform its function; also called hypoperfusion.
tourniquet The bleeding control method used when a wound continues to bleed despite the use of direct pressure and elevation; useful if a patient is bleeding severely from a partial or complete amputation.
vasoconstriction Narrowing of a blood vessel, such as with hypoperfusion or cold extremeties.
veins The blood vessels that carry blood from the tissues to the heart.
venules Very small, thin-walled vessels.
Created by: Liwa91