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Ehrlich Medical Terminology for Professionals, 6th edition. Chapter 5 word parts and terms.


blood or lymph vessel




artery or arteries


plaque or fatty substance






a mixture or blending


blood or blood condition



hem/o, hemat/o












ACE inhibitor

blocks the action of the enzyme that causes the blood vessels to contract, resulting in hypertension


a lower than normal number of red blood cells in the blood


a localized weak spot or balloon-like enlargement of the wall of an artery


a condition of episodes of severe chest pain due to inadequate blood flow to the myocardium


a procedure in which a small balloon is used to open a partially blocked coronary artery by flattening the plaque deposit and stretching the lumen


medication that slows blood coagulation and prevents new clots from forming; also known as a thrombolytic or clot-busting drug


medication administered to lower blood pressure

aplastic anemia

a condition marked by the absence of all formed blood elements


an abnormality, or the loss of the normal rhythm, of the heartbeat


surgical removal of plaque from the interior lining of an artery


a deposit of plaque on or within the arterial wall


hardening and narrowing of the arteries due to a buildup of cholesterol plaques

atrial fibrillation

when the normal rhythmic contractions of the atria are replaced by rapid, irregular twitching of the muscular heart wall

automated external defibrillator

electronic equipment that automatically samples the heart's electrical rhythms and when necessary, externally shocks the heart to restore a normal cardiac rhythm


a medication that reduces the workload of the heart by slowing the rate of the heartbeat

blood dyscrasia

any pathologic condition of the cellular elements of the blood


an abnormally slow heartbeat, usually at a rate of less than 60 beats per minute

cardiac arrest

an event in which the heart abruptly stops or develops a very abnormal arrhythmia that prevents it from pumping blood

cardiac catheterization

a diagnostic procedure in which a catheter is passed into a vein or an artery and is guided into the heart


the term used to describe all diseases of the heart muscle

carotid endarterectomy

surgical removal of the lining of a portion of a clogged carotid artery leading to the brain


a fatty substance that travels through the blood and is found in all parts of the body

chronic venous insufficiency

a condition in which venous circulation is inadequate due to partial vein blockage or leakage of venous valves

coronary thrombosis

damage to the heart muscle caused by a thrombus blocking a coronary artery


the use of electrical shock to restore the heart's normal rhythm; also known as cardioversion


medication administered to stimulate the kidneys to increase the secretion of urine to rid the body of excess sodium and water


a record of the electrical activity of the myocardium


the sudden blockage of a blood vessel by an embolus


a foreign object - such as a blood clot, quantity of air or gas, or a bit of tissue or tumor - that is circulating in the blood; plural, emboli


inflammation of the inner lining of the heart


mature red blood cells


the iron-containing pigment of the erythrocytes that transports oxygen from the lungs to all of the body tissues

hemolytic anemia

a condition of an inadequate number of circulating erythrocytes due to the premature destruction of these cells by the spleen


the arrest or control of bleeding

ischemic heart disease

a group of cardiac disabilities resulting from an insufficient supply of oxygenated blood to the heart


a malignancy characterized by a progressive increase in the number of abnormal leukocytes found in hemopoietic tissues, other organs, and the circulating blood


white blood cells


any situation in which the total number of leukocytes in the circulating blood is less than normal

megaloblastic anemia

a blood disorder in which red blood cells are larger than normal

myelodysplastic syndrome

a group of bone marrow disorders that are characterized by the insufficient production of one or more types of blood cells due to dysfunction of the bone marrow

myocardial infarction

the occlusion of one or more coronary arteries resulting in an infarct of the affected myocardium; also known as a heart attack or an MI

orthostatis hypotension

low blood pressure that occurs in a standing posture; also known as postural hypotension

paroxysmal atrial tachycardia

an episode that begins and ends abruptly, during which there are very rapid and regular heartbeats that originate in the atrium


the double-walled membranous sac that encloses the heart

pernicious anemia

a form of anemia caused by a lack of the protein tha thelps the body absorb vitamin B12, which is necessary for the formation of red blood cells


inflammation of a vein or veins

Raynaud's phenomenon

a peripheral arterial occlusive disease in which intermittent attacks are triggered by cold or stress


a systemic disease caused by the spread of microorganisms and their toxins via the circulating blood; also known as blood poisoning

sickle cell anemia

a genetic disorder that causes abnormal hemoglobin, resulting in some red blood cells assuming an abnormal sickle shape


an abnormally fast heartbeat, usually at a rate of more than 100 beats per minute

thallium stress test

a diagnostic test performed to evaluate how well blood flows through the coronary arteries to the heart muscle during exercise


a condition in which there is an abnormally small number of platelets in the circulating blood


medication that slows coagulation and prevents new blood clots from forming; also known as an anticoagulantor clot-busting drug


the abnormal condition of having a thrombus; plural, thromboses

thrombotic occlusion

the blocking of an artery by a thrombus


a blood clot attached to the interior wall of a vein or an artery

transfusion reaction

a serious and potentially fatal complication of a blood transfusion in which a severe immune response occurs because the patient's blood and the donated blood do not match


inflammation of a heart valve

varicose veins

abnormally swollen veins, usually occuring in the legs

ventricular fibrillation

the rapid, irregular, and useless contractions of the ventricles

ventricular tachycardia

a very rapid heartbeat that begins within the ventricles

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