1/36
Looks like no tags are added yet.
Name | Mastery | Learn | Test | Matching | Spaced |
---|
No study sessions yet.
What term refers to competition for the SA node?
ectopic impulse
Atrial dysrhythmias are caused by an ectopic impulse located where?
left or right atrium
Atrial dysrhythmia occurs from conditions that cause ______ on the atria
pressure
The ______ impulse controls the heart rate
fastest
What 3 conditions may cause atrial dysrhythmias by putting pressure on the atria?
Myocardial infarction, valvular problems, & neurological influences
When both deflections are approximately equal, a biphasic waveform is said to be what?
Equiphasic
Which atrial dysrhythmia is this: Rhythm: P-P & R-R are constant, except for early complexes. Rate: 60-100bpm. P wave: unusual. PR int: .12-.20. QRS: .06-.10
Premature atrial complexes
What are the 5 types of PAC?
Triplet (3 in a row), Couplet (2 in a row), Bigeminy (every other), trigeminy (every third), & quadgeminy (every fourth)
Label a PAC tracing with underlying ______ and ______ of PAC
rhythm; type
PAC patients may experience the symptoms of ______ cardiac output
low
Severity of PAC patient's complaint is related to the ______ of PACs
frequency
___ wave morphology is different in a WAP for each pacemaker site
P
Which atrial dysrhythmia is this?: Rhythm: Slightly irregular. Rate: 60-100bpm. P wave: continuous change. PR int: varies. QRS: .06-.10
Wandering atrial pacemaker
Which atrial dysrhythmia is normal in children, older adults, and well-conditioned athletes. It has no signs or symptoms?
WAP
WAP may be related to what 2 conditions?
Organic heart disease and drug toxicity
Which atrial dysrhythmia is this?: Rhythm: Slightly irregular. Rate: 100-150bpm. P wave: continuous change. PR int: varies. QRS: .06-.10
Multifocal atrial tachycardia
What is the distinguishing feature of WAP?
Visibly changing P waves
What 3 other heart conditions can trigger MAT?
Acute emphysema, congestive heart failure, & acute mitral valve regurgitation
Atrial kick contributes what percentage range of a decrease in cardiac output?
10-30%
What occurs when a rapid impulse originates in atrial tissue?
Atrial flutter
What are the 2 origins of ectopic focus with atrial flutter?
Ischemic areas with enhanced automaticity & reentry pathway
Which atrial dysrhythmia has a characteristic sawtooth pattern and what are these waves called?
Atrial flutter & F (flutter) waves
Which atrial dysrhythmia is this?: Rhythm: irregular. Rate: atrial rate 250-350bpm. P wave: not seen. PR int: not identifiable. QRS: .06-.10
Atrial flutter
What is the atrial rate for atrial flutter?
250-350
Loss of atrial kick reduces cardiac output by __-__%
10-30
Atrial flutter patients with increased heart rate demonstrate signs of what?
low cardiac output
What treatment is common for atrial flutter?
oxygen
Which wave type gets an upper case F?
Flutter
What atrial dysrhythmia has a distinguishing feature of visibly changing P waves?
WAP
As with WAP, _____ _____ cause atrial depolarization in atrial fibrillation
multiple foci
Which atrial dysrhythmia is this?: Rhythm: irregular. Rate: atrial rate cannot be determined, electrical impulse activity rate 375-700. P wave: not seen. PR int: not identifiable. QRS: .06-.10 and irregular
Atrial fibrillation
What is the electrical impulse activity rate for atrial fibrillation?
375-700
Which wave type gets a lower case f?
Fibrillatory
Atrial fibrillation patients exhibit signs of decreased _____ _____?
cardiac output
When heart rate is controlled in a patient with a fib, they may be able to tolerate loss of _____ _____
atrial kick
Blood clotting in the atria can clot or form thrombi, which increases risk of _____
embolism
Which 4 conditions are related to atrial fibrillation?
cerebrovascular accident, myocardial infarction, pulmonary embolism, & renal infarction