Lead V1 views the _____.
a. septum
b. inferior wall of the left ventricle
c. lateral wall of the right ventricle
d. anterior wall of the right ventricle
Question 2Complete the following ECG criteria for 2:1 AV block:
Rhythm _____________________________
___________
Rate _____________________________
___________
P waves _____________________________
___________
PR interval _____________________________
___________
QRS duration _____________________________
___________
Fill in the blanks with correct word
Question 3List four reasons why the ventricles may assume responsibility for pacing the heart.
What will be an ideal response?
Question 4In 2:1 AV block, _____.
a. the atrial rhythm (P-P interval) is regular
b. the ventricular rhythm (R-R interval) is irregular
c. the PR interval lengthens until a P wave appears with no QRS complex
d. there is no PR interval because the atria and ventricles beat independently of each other
Question 5The thick, muscular middle layer of the heart wall that contains the atrial and ventricular muscle fibers necessary for contraction is the __________.
Fill in the blanks with correct word
Question 6A 2:1 AV block is characterized by _____ intervals.
a. irregular P to P
b. irregular R to R
c. regular P to P intervals and regular R to R
d. irregular P to P intervals and regular R to R
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