Terms Flashcards
Acute coronary syndrome ACS
A group of symptoms caused by myocardial ischemia; includes angina and myocardial infarction
Acute myocardial infarction AMI
A heart attack; death of heart muscle following obstruction of blood flow to it. “Acute” in this context means “new” or “happening right now”
Angina pectoris
Transient (short-lived) chest discomfort caused by prep partial or temporary blockage of blood flow to the heart muscle; also called angina
Aorta
The main artery which receives blood from the left ventricle, and delivers it to all the other arteries that carry blood to the tissues of the body
Aortic aneurysm
A weakness in the wall of the aorta that makes it susceptible to rupture
Aortic valve
The one-way valve that lies between the left ventricle and the aorta and keeps blood from flowing back into the left ventricle after the left ventricle eject its blood into the aorta; one of the four heart valves
Artifact
A tracing on an ECG that is the result of interference, such as patient movement rather than the hearts electrical activity
Asystole
The complete absence of all heart electro activity
Atherosclerosis
A disorder in which cholesterol calcium buildup inside the walls of blood vessels; eventually leading to partial or complete blockage of blood flow
Atrium
One of the two upper chambers of the heart
Automaticity
The ability of cardiac muscle cells to contract without stimulation from the nervous system
Autonomic nervous system ANS
The part of the nervous system that controls the involuntary activities of the brain, such as heart rate, blood pressure and digestion of food
Bradycardia
Is low heart rate less than 60 beats per minute
Cardiac arrest
When the heart feels to generate effective and detectable blood flow, pulses are not palpable in the cardiac arrest, even if muscular an electrical activity continues in the heart
Cardiac output
A measure of the volume of blood, circulated by the heart in 1 minute, calculated by multiplying the stroke, volume by the heart rate