11. G

heart block

failure of proper conduction of impulses through the AV node to the atrioventricular bundle (bundle of His)

cardiac arrest

sudden unexpected stoppage of heart action

palpitations

uncomfortable sensations in the chest associated with arrhythmias

artificial cardiac pacemaker

battery-operated device that is placed in the chest and wired to send electrical current to the heart to establish a normal sinus rhythm

thrombotic occlusion

blockage of a vessel by a clot

angina

chest pain resulting from insufficient oxygen being supplied to the heart muscle (ischemia)

myocardial infarction

area of necrosis (tissue death in the heart muscle; heart attack)

necrosis

abnormal condition of death (dead tissue)

infarction

damage or death of tissue due to deprivation of oxygen

ischemia

blood is held back from an area of the body

nitroglycerin

nitrate drug used in the treatment of angina

digoxin

drug that treats arrhythmias and strengthens the heartbeat

bruit

abnormal sound (murmur) heard on auscultation

thrill

vibration felt on palpation of the chest

acute coronary syndromes

consequences of plaque rupture in coronary arteries; MI and unstable angina

pericardial friction rub

scraping or grating noise on auscultation of heart; indicates pericarditis

deep vein thrombosis

clot formation in a large vein, usually in lower limb

biventricular pacemaker

device enabling ventricles to beat in synchrony; cardiac resynchronization therapy