with 100% correct answers
(latest update)
acute coronary syndrome (ACS) - answer a constellation of signs
and symptoms due to the rupture of atherosclerotic plaque and
resultant partial or complete thrombosis within a diseased coronary
artery; leads to unstable angina or acute myocardial infarction
Afterload - answer the amount of resistance to ejection of blood
from the ventricle
apical impulse or point of maximal impulse (PMI) - answer impulse
normally palpated at the fifth intercostal space, left midclavicular
line; caused by contraction of the left ventricle.
atrioventricular (AV) node - answer secondary pacemaker of the
heart, located in the right atrial wall near the tricuspid valve.
Baroreceptors - answer nerve fibers located in the aortic arch and
carotid arteries that are responsible for control of the blood
pressure
cardiac catheterization - answer an invasive procedure used to
measure cardiac chamber pressures and assess patency of the
coronary arteries
cardiac conduction system - answer specialized heart cells
strategically located throughout the heart that are responsible for
methodically generating and coordinating the transmission of
electrical impulses to the myocardial cells
, cardiac output - answer - amount of blood pumped by each ventricle
in liters per minute
- stroke volume x heart rate
Cardiac stress test - answer a test used to evaluate the functioning
of the heart during a period of increased oxygen demand; test may
be initiated by exercise or medications
Contractility - answer ability of the cardiac muscle to shorten in
response to an electrical impulse
depolarization - answer electrical activation of a cell caused by the
influx of sodium into the cell while potassium exits the cell
Diastole - answer period of ventricular relaxation resulting in
ventricular filling
Ejection fraction - answer percentage of the end-diastolic blood
volume ejected from the ventricle with each heartbeat
hemodynamic monitoring - answer the use of pressure monitoring
devices to directly measure cardiovascular function
Hypertension - answer blood pressure that is persistently greater
than 130/80 mm Hg
Hypotension - answer a decrease in blood pressure to less than
90/60 mm hg that compromises systemic perfusion
murmurs - answer sounds created by abnormal, turbulent flow of
blood in the heart