Multiple Choice
A normal PR interval:
A) is usually present with all sinus and junctional dysrhythmias.
B) 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.
C) consists of the P wave and a flat line.
D) is seen with wandering atrial pacemaker and multifocal atrial tachycardia.
Correct Answer:

Verified
Correct Answer:
Verified
Q10: The P'R intervals may vary from beat
Q11: PR intervals are considered normal if they
Q12: When a P' follows the QRS complex
Q13: A PR interval of greater than 0.20
Q14: The PR intervals get progressively longer in:<br>A)
Q15: A PR interval of less than 0.12
Q16: Preexcitation:<br>A) leads to a delayed depolarization of
Q17: You have determined the heart rate and
Q18: The PR interval is normally _ to
Q19: The PR interval denotes depolarization of the