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Atrial Rhythms

TermDefinition
Accessory pathway an extra bundle of working myocardial tissue that forms a connection between he atria and ventricles outside the normal conduction system
Altered automaticity a disorder of impulse formation in which cardiac cells fire and initiate impulses before a normal SA node impulse
Atrial kick blood pushed into the ventricles because of atrial contraction
Atrial tachycardia three or more sequential PACs occurring at a rate of more than 100 bpm
Bigeminy dysrhythmia in which every other beat is a premature ectopic beat
Blocked premature atrial complex PAC not followed by a QRS complex
Bruit blowing or swishing sound
Burst three or more sequential ectopic beats; also referred to as a salvo or run
Bypass tract term used when one end of an accessory pathway is attached to normal conductive tissue
Carotid sinus pressure type of vagal maneuver in which pressure is applied to the carotid sinus for a brief period to slow conduction through the AV node
Compensatory pause pause for which the normal beat after a premature complex occurs when expected; also called a complete pause
Couplet two consecutive premature complexes
Delta waves slurring of the beginning portion of the RS complex, caused by pre-excitation
F waves fibrillation waves; irregularly shaped atrial waves associated with atrial fibrillation; occurring at a rate of 400 to 600 bpm
Focal atrial tachycardia AT that begins in a small area (focus) with the heart
Multiformed atrial rhythm Dysrhythmia that occurs because of impulses originating from various sites, including the SA node, the atria, and/or the AV junction; requires at least three different P waves, seen in the same lead, for proper diagnosis
Nonconducted PAC (blocked PAC) PAC that is not followed by a QRS complex
Noncompensatory pause a pause that often follows a premature atrial complex that represents the delay during which the SA node resets its rhythm for the next beat; pause is noncompensatory if the normal beat following the premature complex occurs before it was expected
Paired beats two consecutive complexes
Palpitations an unpleasant awareness of one's heartbeat
Paroxysal supraventricular tachycardia (PSVT) a regular, narrow-QRS tachycardia that starts or ends suddenly
Preexcitation term used to describe rhythms that originate from above the ventricles but in which the impulse travels by a pathway other than the AV node and bundle of His; thus the supraventricular impulse excites the ventricles earlier than normal
Premature complex early beat occurring before the next expected beat; can be atrial, junctional, or ventricular
Quadrigeminy dysrhythmia in which every fourth heartbeat is a premature ectopic beat
supraventricular originating from a site above the bifurcation of the bundle of His, such as the SA node, atria, or AV junction
Trigeminy dysrhythmia in which every third beat is a premature ectopic beat
Vagal maneuver methods used to stimulate the vagus nerve in an attempt to slow conduction through the AV node, resulting in slowing of the heart rate
Wandering atrial pacemaker (multiformed atrial rhythm) cardiac dysrhythmia that occurs because of impulses origination fro various sites, including the SA node, the atria, and/or the AV junction; requires at least three different P waves, seen in the same lead, for proper diagnosis
Wolff-Parkinson-White syndrome type of preexcitation syndrome, characterized by a slurred upstroke of the QRS complex (delta waves) and wide QRS
Formation altered automaticity and triggered activity are disorders in...
conduction reentry is a disorder in impulse...
automatic reference given to dysrhythmias that result from disorders of impulse formation
reentrant reference given to dysrhythmias that result from a disorder in impulse conduction
Created by: pnkrangr87