EKG Rhythms ACLS Practice Questions, Answers & Study Guide 2026

EKG rhythms ACLS
EKG rhythms ACLS
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1. First degree AV block What is the rhythm?
-long PR interval

-treat: usually none

2. Second degree type I AV block What is the rhythm?
-progressively longer PR interval, then dropped QRS

3. Second degree type II AV block What is the rhythm?
-PR interval is long and stays the same, then dropped
QRS

4. Third degree AV block What is the rhythm?
-no association with P wave and QRS
-tend to see P in T

-treat: pacemaker

5. Sinus tachycardia -narrow What is the rhythm?
-P wave present
-rate about 150
-warms up and slows down

-treat cause! (fever, pain)

6. SVT -narrow What is the rhythm?
-no P wave
-faster than 160
-sudden onset
-pt is symptomatic
-ventricles are pumping so fast, no time to relax and
fill


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