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23 terms

Chapter 46 and 48

Assisting in Cardiology and principles of electrocardiography
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bruit
abnormal sound or murmur heard on auscultation of an organ, vessel, or gland.
chordae tendineae
Tendons that anchor the cusps of the heart valves to the papillary muscles of the myocardium, preventing valvular prolapse.
intermittent claudication
Recurring cramping in the calves caused by poor circulation of the blood to the muscles of the lower legs.
Marfan syndrome
An inherited condition characterized by elongation of the bones, joint hyper mobility, abnormalities of the eyes, and development of aortic aneurysm.
scleroderma
Autoimmune disorder that affect the blood vessel and connective tissue, causing fibrous degeneration of the major organs.
arrhythmia
abnormality or irregularity in the heart rhythm.
atria
the two upper chamber of the heart.
atrioventricular (AV) node
Part of the cardiac conduction system located between the atria and the ventricle.
bifurcates
divides from one into two branches.
bradycardia
Heart rate of less than 60 beats per minute.
bundle of His
Specialized muscle fibers that conduct electrical impulses from AV node to ventricular myocardium
cardiac arrest
Condition in which cardiac contractions completely stop.
cardioversion
use of electroshock to convert an abnormal cardiac rhythm to a normal one.
defibrillator
machine used to deliver an electroshock to the heart through electrodes placed on the chest wall.
ectopic
originating outside of the normal tissue.
infraction
area of tissue that has died from the lack of blood supply.
ischemic
characterized by temporary interruption in the blood supply to a tissue or an organ.
myocardial
pertaining to the heart muscle.
myocardium
Heart muscle
sinoatrial (SA) node
pacemaker of the heart, located in the right atrium.
trachycardia
heart rate over 100 beats per minute.
ventricles
the two lower chambers of the heart.
vertigo
dizziness