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Nursing: Cardiac Terms to Know
Cardiac System Terms to Know
47
Health Care
Undergraduate 2
01/06/2009

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Term

adrenergic

Definition
Relating to nerve fibers that release norepinephrine or epinephrine at synapses.
Term
adrenergic neuron-blocking agents
Definition
Substances that inhibit transmission of sympathetic nerve stimuli regardless of whether alpha- or beta-adrenergic receptors are involved.
Term
afterload
Definition
the forces that impede the flow of blood out of the heart. The heart contracts against a resistance primarily composed of the pressure in the peripheral vasculature, the compliance of the aorta, and the mass and viscosity of blood.
Term

angina

Definition
Severe pain around the heart caused by a relative deficiency of oxygen supply to the heart muscle.
Term
angioplasty
Definition
Alteration of a blood vessel, either surgically or by dilating the vessel using a balloon inside the lumen.
Term
antiarrhythmic
Definition
A drug or physical force that acts to control or prevent cardiac arrhythmias
Term
arrhythmia
Definition
Irregularity or loss of rhythm, esp. of the heartbeat.
Term
arterial line
Definition

A hemodynamic monitoring system consisting of a catheter in an artery connected to pressure tubing, a transducer, and an electronic monitor.

Term

 asystole

Definition
Cardiac standstill; absence of contractions of the heart.
Term
atherectomy
Definition
An experimental technique for removing atheromatous plaques from arteries.
Term
atherosclerosis
Definition
The most common form of arteriosclerosis, marked by cholesterol-lipid-calcium deposits in arterial linings.
Term
atrial fibrillation
Definition
Irregular and rapid discharges from multiple ectopic atrial foci that cause randomized quivering of the atria.
Term
atrial flutter
Definition
A cardiac arrhythmia originating in the atrial muscle cells; marked by rapid (approx. 300 times per minute) regular atrial activity and usually regular ventricular response of varying rates.
Term
atrial tachycardia
Definition
Rapid heart rate, usually less than 200 beats per minute
Term
atrioventricular block
Definition
A condition in which the depolarization impulse is delayed or blocked at the atrioventricular (A-V) node or a more distal site, as in the A-V bundle or bundle branches.
Term
automaticity
Definition
The unique property of cardiac muscle tissue to contract without nervous stimulation.
Term
auscultatory gap
Definition
A period of silence that sometimes occurs in the determination of blood pressure by auscultation.
Term
bradycardia
Definition
A slow heartbeat characterized by a pulse rate below 60 beats per minute
Term

cardiac catheterization

Definition
Percutaneous intravascular insertion of a catheter into any chamber of the heart or great vessels for diagnosis, assessment of abnormalities, interventional treatment, and evaluation of the effects of pathology on the heart and great vessels.
Term
calcium channel blocker
Definition
Any of a group of drugs that slow the influx of calcium ions into muscle cells, resulting in decreased arterial resistance and decreased myocardial oxygen demand
Term
cardiac output
Definition
The amount of blood discharged from the left or right ventricle per minute.
Term
cardiac tamponade
Definition
A pathological condition resulting from the accumulation of excess fluid in the pericardium; it may result from pericarditis or injuries to the heart or great blood vessels, with accumulation of blood.
Term
cardiogenic shock
Definition
Shock resulting from failure to maintain the blood supply to the circulatory system and tissues because of inadequate cardiac output.
Term
cardiopulmonary resuscitation
Definition
The process of ventilating and circulating blood for a patient in cardiopulmonary arrest, usually by combining mouth-to-mouth ventilation with external chest compressions.
Term
cardioversion
Definition
Synchronized electric shock used to terminate cardiac arrhythmias.
Term
claudication
Definition
Lameness. Limping, abnormal gait, or hobbling resulting from partial loss of function in a leg.
Term
coarctation
Definition
Compression of the walls of a vessel
Term
commissurotomy
Definition
Surgical incision of any commissure; used in treating mitral stenosis to increase the size of the mitral orifice.
Term
coronary artery bypass surgery
Definition

Surgical establishment of a shunt that permits blood to travel from the aorta to a branch of the coronary artery at a point past an obstruction.

Term
diastolic murmur
Definition
A murmur occurring during relaxation of the heart.
Term
dissecting aneurysm
Definition
Aneurysm in which the blood makes its way between the layers of a blood vessel wall, separating them; a result of necrosis of the medial portion of the arterial wall.
Term
dysrhythmia
Definition
dysrhythmia
Term
echocardiography
Definition
A noninvasive diagnostic method that uses ultrasound to visualize internal cardiac structures.
Term
electrocardiogram
Definition
A record of the electrical activity of the heart.
Term
fusiform aneurysm
Definition
Aneurysm in which all the walls of a blood vessel dilate more or less equally, creating a tubular swelling.
Term
intermittent claudication
Definition
A severe pain in the calf muscles that occurs during walking but subsides with rest.
Term
intra-aortic balloon counterpulsation
Definition
The use of a balloon attached to a catheter inserted through the femoral artery into the descending thoracic aorta to produce alternating inflation and deflation during diastole and systole, respectively
Term
ischemia
Definition
A local and temporary deficiency of blood supply due to obstruction of the circulation to a part.
Term
pulsus alternans
Definition
Regular heart rhythm in which strong beats alternate with weak ones.
Term
sacculated aneurysm
Definition
Aneurysm in which there is weakness on one side of the vessel; usually due to trauma. It is attached to the artery by a narrow neck.
Term
sinus arrhythmia
Definition
A slow sinus rhythm with an atrial rate below 60 beats per minute in an adult, 70 beats per minute in a child
Term
sinus tachycardia
Definition
A heart rate of 90 beats per min or more.
Term
Swan-Ganz catheter
Definition
A soft, flexible catheter that is inserted into the pulmonary artery of patients in shock or acute pulmonary edema to determine intracardiac pressures, oxygen saturation, and other hemodynamic parameters.
Term
tachycardia
Definition
An abnormal rapidity of heart action, usually defined as a heart rate greater than 100 beats per minute in adults
Term
tetralogy of Fallot
Definition

An anomaly of the heart consisting of:

 pulmonary stenosis

 interventricular septal defect

dextroposed aorta that receives blood from both ventricles, and hypertrophy of the right ventricle.

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