15: Antidysrhythmic Drugs Flashcards
Asystole
And absence of electrical or contraction activity within the heart. Appears on the electrocardiogram monitor as a straight line or flatline
Antidysrhythmic drugs
Drugs used to treat abnormal heart rhythm
Atrial fibrillation
Quivering of the atria. Atrial fibrillation decreases cardiac output because the atrial portion of the output of the heart is lost when the Atria does not contract
Atrioventricular (AV) node
Specialized cardiac tissue capable of generating electrical impulses that caused her to contract, the secondary pacemaker of the heart
Automaticity
The ability of the cardiac muscle cells to fire an impulse on their own
Bradycardia
Slow heart rate, usually considered to be less than 60 bpm
Bradydysrhythmia
And abnormally slow heart rhythm
Cardiac output
The amount of blood ejected by the heart in one minute. Normal adult her can easily 5 quarts of blood in a minute.
Conductivity
Ability or power of the heart muscle cells to transmit electrical impulses
Dysrhythmia
An abnormal heart rhythm
Electrical conduction system
The electrical conduction system that controls the heart rate. It causes electrical impulses and conducts them through the muscle of the heart, stimulating the heart to contract and pump blood.
His-Purkinje system
Specialize cardiac tissue that normally conduct impulses from the AV node to the ventricles
Normal sinus rhythm
The normal rhythm of the heart as measured by an electrocardiogram
Pacemaker
A part of the body such as the special cardiac muscle fibers of the sinoatrial node that sets the rate of rhythm of the heart
Premature contractions
Heart contractions that occurred earlier than expected
Refractory period
The time following an action potential during which normal stimulation will not cause another action potential.
Sinoatrial (SA) node
Specialized cardiac tissue capable of generating electrical impulses that caused the heart muscle to contract, the normal pacemaker of the heart located in the upper right atrium.
Syncope
A brief loss of consciousness caused by a temporary deficiency of oxygen in the brain
Tachycardia
Rapid heart rate, usually considered to be greater than 100 bpm
Tachydysrhythmias
An abnormally rapid heart rhythm
Tirades de pointes
A life-threatening ventricular tachycardia. Primarily caused by a little blood magnesium level and seeing and malnourished people
Ventricular fibrillation
Quivering of the ventricles. Ventricular fibrillation is life-threatening and can lead to death and minutes because there is no cardiac output when the ventricles do not contract
