Chapter 27 Flashcards
anemia
condition in which levels of hemoglobin in the red blood cells are insufficient; caused by decreased healthy red cell production by the bone marrow, increased erythrocyte destruction, or blood loss from heavy menstrual periods or internal bleeding
agglutination
clumping together
aneurysm
abnormal widening or ballooning of a portion of an artery, related to weakness in the vessel wall
angioplasty
surgical vessel repair procedure frequently used to reopen a blocked coronary artery
aorta
largest artery of the body into which blood enters after it leaves the left ventricle
arrhythmia
irregular heartbeat caused by a disturbance of normal electrical activity of the heart; pulse with an irregular rhythm
arteriosclerosis
a thickening and loss of elasticity of the arteries; also called hardening of the arteries
atherosclerosis
narrowing and hardening of the vessel lumen of the arteries due to a buildup of fatty material and plaque
atria
the two upper chambers of the heart (27)
atrioventricular (AV) node
one of the three areas of specialized neuromuscular tissue that initiate the heartbeat; located under the endocardium of the right atrium
auscultation
listening to sounds within the body, such as heart sounds
bicuspid valve
the valve through which the blood leaves the left atrium of the heart; also called mitral valve
blood pressure
force exerted by the blood on the walls of the arteries
bradycardia
abnormally slow heart rate of below 60 beats per minute
bruit
sound made by a heart murmur
buffers
mechanisms within the blood that balance the pH level, thus preventing blood from becoming too acidic or too alkaline
bundle of His
one of the three areas of specialized neuromuscular tissue that initiate the heartbeat; also called atrioventricular (AV) bundle
cardiac arrest
stoppage of the beating of the heart; also called sudden death
cardiac tamponade
congestion of the heart muscle and restriction of heart movement caused by blood or fluid trapped in the pericardial sac
cardiogenic shock
collapse of the cardiovascular system characterized by vasodilation and fluid shifting away from the heart
carditis
inflammation of the heart
carotid artery
artery found on each side of the neck
congestive heart failure (CHF)
condition in which the heart cannot pump sufficient blood to the other organs; also called heart failure
coronary arteries
crown of arteries that supply the heart with freshly oxygenated blood
coronary artery disease (CAD)
blockage of the arteries that supply the heart muscle; also called coronary heart disease (CHD)
cor pulmonale
heart disease that causes the right ventricle to enlarge as a result of primary lung disease; also called right-sided heart disease
cyanosis
bluish discoloration of the skin and nail beds due to lack of oxygen in the tissues