
PR Intervals Review
Quiz
•
Specialty, Science, Other
•
12th Grade - University
•
Medium

Leslie Covington
Used 7+ times
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9 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
1. The PR interval is the distance from the beginning of the ________ to the beginning of the__________.
P wave, Q wave
P wave, S wave
R wave, T wave.
PR segment, Q wave.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The PR interval denotes depolarization of the heart from the
Bundle of His through the ventricles
SA node through the atria, AV node, and His-Purkinje system
AV node through the bundle of His
SA node through the atria and AV node
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A normal PR interval
is usually present with all sinus and junctional dysrhythmias.
indicates the impulse originated from the AV junction (or close to it) and traveled through the atria and AV node in a regular and unobstructed course.
consists of the P wave and a flat line.
is seen with wandering atrial pacemaker and multifocal atrial tachycardia.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The PR interval is normally ____ to ____ seconds in duration.
0.06, 0.12
0.10, 0.12
0.12, 0.16
0.12, 0.20
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A PR interval of less than 0.12 seconds indicates:
an intermittent blocking of the impulse as it passes through the AV node.
an increased rate of impulse discharge from the SA node.
a pacemaker site which is either in or close to the AV junction.
a delay in conduction of the impulse between the SA node and the ventricles.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A PR interval of greater than 0.20 seconds indicates:
an intermittent blocking of the impulse as it passes through the AV node.
an increased rate of impulse discharge from the AV junction.
a pacemaker site which is either in or close to the AV junction.
a delay in conduction of the impulse between the SA node and the ventricles.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
PR intervals are considered normal if they are:
shorter than 0.12 seconds.
consistently the same duration.
vary in duration.
longer than 0.20 seconds.
8.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The P'R intervals may vary from beat to beat in:
sinus dysrhythmia.
junctional escape.
wandering atrial pacemaker.
3rd – degree AV block.
9.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The PR intervals are not measurable in:
wandering atrial pacemaker.
atrial flutter
2nd - degree AV heart block, Type I.
premature atrial complexes.
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