EKG exam 1 complete questions and answers | verified 2026

EKG exam 1 complete questions and answers | verified 2026

1. 1st degree
AV block
5.




2. 2nd degree
AV block
Type 1
(Wenckebac
h)




3. 2nd degree
AV Block
Type 2




4. 3rd degree
AV block
(complete
heart block)




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, EKG exam 1 complete questions and answers | verified 2026

Normal sinus rhythm but l is *consistent and normal*
PR interval is prolonged multiple dropped beats
PR interval > .20 seconds QRS regular width
- conduction is delayed at
AV node

More P waves than QRS;
Sometimes the P waves are hidden within the T
wave No pattern to PR interval, variable
R-R always regular
No atrial impulses are conducted through the AV node. Heart has
More P waves than QRS regular atrial activity and regular ventricular activity, but the activities are
PR interval not coordinated with each other.
progressively
increases in a cycle
until P appears w/o
QRS occasional
dropped beat
RR intervals not regular




More P waves than QRS
P
R

i
n
t
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r
v
a
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