Relias Learning | Dysrhythmia Basic A Test
Relias Dysrhythmia Basic A Test
Comprehensive Examination
2026/2027 | Verified EXAM
Relias Learning | Dysrhythmia Basic A Test | Professional Nursing Candidates
55 Verified Items | 4 Core Domains | Academic Year 2026/2027
Prepared by
Relias Learning | Dysrhythmia Basic A Test
Comprehensive Competency Examination Actual Exam | Academic Year 2026/2027
Relias Dysrhythmia Basic A Test Comprehensive Examination 2026/2027 | Verified Items
,INTRODUCTION
This document contains 55 original, verified items developed for the Relias Learning Dysrhythmia
Basic A Test Comprehensive Competency Examination, aligned with the 2026/2027 academic
year. The items span all four core domains — Normal Sinus Rhythm and Basic EKG
Interpretation; Atrial Dysrhythmias and Arrhythmias; Junctional and Ventricular Dysrhythmias;
and Heart Blocks and Advanced Rhythm Interpretation — mirroring the official content outline
distribution of 14, 14, 14, and 13 items respectively. Every item is an original creation written to
reinforce the official Relias Learning Dysrhythmia Basic A Comprehensive Competency
Examination course objectives, strengthening actual exam readiness and clinical proficiency
through systematic rhythm-strip analysis drawn from foundational cardiac rhythm interpretation
methodology. Work through each domain carefully, examine every waveform tracing provided,
read every rationale, and use the domain score tracker to identify the areas where your cardiac
rhythm knowledge is strongest and where further reinforcement will deliver the greatest benefit.
ACTUAL QUESTIONS
Domain 1: Normal Sinus Rhythm and Basic EKG Interpretation
Question 1. On standard EKG paper running at 25 mm/sec, one small (1 mm) box
represents which duration of time?
A. 0.04 second
B. 0.02 second
C. 0.20 second
D. 1.0 second
Correct Answer: A
Rationale: At the standard paper speed of 25 mm/sec, each small box equals 0.04 second, and
five small boxes form one large box equal to 0.20 second. All interval measurements on the
tracing are built from this unit.
Question 2. Using the 300 method on the rhythm strip shown, the R-R interval
spans 4 large boxes. The ventricular rate is approximately:
A. 60 beats per minute
B. 100 beats per minute
C. 150 beats per minute
D. 75 beats per minute
Correct Answer: D
Rationale: The 300 method divides 300 by the number of large boxes between consecutive R
waves: = 75 beats per minute, a fast estimate used whenever the rhythm is regular.
Question 3. Using the 1500 method for greater precision, an R-R interval that spans
20 small boxes corresponds to a heart rate of:
A. 75 beats per minute
Relias Dysrhythmia Basic A Test Comprehensive Examination 2026/2027 | Verified Items
, B. 50 beats per minute
C. 65 beats per minute
D. 90 beats per minute
Correct Answer: A
Rationale: The 1500 method divides 1500 by the number of small boxes between R waves: 1500
/ 20 = 75 beats per minute. It is the most accurate rate calculation for a regular rhythm.
Question 4. The normal range for the PR interval is:
A. 0.04 to 0.10 second
B. 0.06 to 0.12 second
C. 0.20 to 0.40 second
D. 0.12 to 0.20 second
Correct Answer: D
Rationale: The PR interval is measured from the beginning of the P wave to the beginning of the
QRS complex and reflects conduction time from atria to ventricles, including the normal delay
at the AV node.
Question 5. A QRS complex is considered abnormally wide when it measures:
A. 0.12 second or more
B. 0.04 second or more
C. 0.08 second or more
D. 0.16 second or more
Correct Answer: A
Rationale: Normal ventricular conduction through the His-Purkinje system takes less than 0.12
second; a QRS at or beyond 0.12 second indicates a ventricular origin or a conduction delay
such as a bundle branch block.
Question 6. The QT interval is measured from the:
A. Beginning of the P wave to the end of the T wave
B. Beginning of the QRS complex to the end of the T wave
C. Peak of the R wave to the end of the T wave
D. End of the S wave to the beginning of the T wave
Correct Answer: B
Rationale: The QT interval captures total ventricular electrical activity — depolarization plus
repolarization — so it spans from the onset of ventricular depolarization to the completion of
repolarization.
Question 7. The P wave on the EKG tracing represents:
A. Ventricular depolarization
B. Atrial repolarization
C. Atrial depolarization
D. Ventricular repolarization
Correct Answer: C
Rationale: The P wave is the electrical signature of the impulse spreading through the atria
after firing from the SA node, producing atrial contraction that follows it.
Question 8. Atrial repolarization is usually not seen on the surface EKG because it
is:
A. Hidden within the QRS complex
Relias Dysrhythmia Basic A Test Comprehensive Examination 2026/2027 | Verified Items
Relias Dysrhythmia Basic A Test
Comprehensive Examination
2026/2027 | Verified EXAM
Relias Learning | Dysrhythmia Basic A Test | Professional Nursing Candidates
55 Verified Items | 4 Core Domains | Academic Year 2026/2027
Prepared by
Relias Learning | Dysrhythmia Basic A Test
Comprehensive Competency Examination Actual Exam | Academic Year 2026/2027
Relias Dysrhythmia Basic A Test Comprehensive Examination 2026/2027 | Verified Items
,INTRODUCTION
This document contains 55 original, verified items developed for the Relias Learning Dysrhythmia
Basic A Test Comprehensive Competency Examination, aligned with the 2026/2027 academic
year. The items span all four core domains — Normal Sinus Rhythm and Basic EKG
Interpretation; Atrial Dysrhythmias and Arrhythmias; Junctional and Ventricular Dysrhythmias;
and Heart Blocks and Advanced Rhythm Interpretation — mirroring the official content outline
distribution of 14, 14, 14, and 13 items respectively. Every item is an original creation written to
reinforce the official Relias Learning Dysrhythmia Basic A Comprehensive Competency
Examination course objectives, strengthening actual exam readiness and clinical proficiency
through systematic rhythm-strip analysis drawn from foundational cardiac rhythm interpretation
methodology. Work through each domain carefully, examine every waveform tracing provided,
read every rationale, and use the domain score tracker to identify the areas where your cardiac
rhythm knowledge is strongest and where further reinforcement will deliver the greatest benefit.
ACTUAL QUESTIONS
Domain 1: Normal Sinus Rhythm and Basic EKG Interpretation
Question 1. On standard EKG paper running at 25 mm/sec, one small (1 mm) box
represents which duration of time?
A. 0.04 second
B. 0.02 second
C. 0.20 second
D. 1.0 second
Correct Answer: A
Rationale: At the standard paper speed of 25 mm/sec, each small box equals 0.04 second, and
five small boxes form one large box equal to 0.20 second. All interval measurements on the
tracing are built from this unit.
Question 2. Using the 300 method on the rhythm strip shown, the R-R interval
spans 4 large boxes. The ventricular rate is approximately:
A. 60 beats per minute
B. 100 beats per minute
C. 150 beats per minute
D. 75 beats per minute
Correct Answer: D
Rationale: The 300 method divides 300 by the number of large boxes between consecutive R
waves: = 75 beats per minute, a fast estimate used whenever the rhythm is regular.
Question 3. Using the 1500 method for greater precision, an R-R interval that spans
20 small boxes corresponds to a heart rate of:
A. 75 beats per minute
Relias Dysrhythmia Basic A Test Comprehensive Examination 2026/2027 | Verified Items
, B. 50 beats per minute
C. 65 beats per minute
D. 90 beats per minute
Correct Answer: A
Rationale: The 1500 method divides 1500 by the number of small boxes between R waves: 1500
/ 20 = 75 beats per minute. It is the most accurate rate calculation for a regular rhythm.
Question 4. The normal range for the PR interval is:
A. 0.04 to 0.10 second
B. 0.06 to 0.12 second
C. 0.20 to 0.40 second
D. 0.12 to 0.20 second
Correct Answer: D
Rationale: The PR interval is measured from the beginning of the P wave to the beginning of the
QRS complex and reflects conduction time from atria to ventricles, including the normal delay
at the AV node.
Question 5. A QRS complex is considered abnormally wide when it measures:
A. 0.12 second or more
B. 0.04 second or more
C. 0.08 second or more
D. 0.16 second or more
Correct Answer: A
Rationale: Normal ventricular conduction through the His-Purkinje system takes less than 0.12
second; a QRS at or beyond 0.12 second indicates a ventricular origin or a conduction delay
such as a bundle branch block.
Question 6. The QT interval is measured from the:
A. Beginning of the P wave to the end of the T wave
B. Beginning of the QRS complex to the end of the T wave
C. Peak of the R wave to the end of the T wave
D. End of the S wave to the beginning of the T wave
Correct Answer: B
Rationale: The QT interval captures total ventricular electrical activity — depolarization plus
repolarization — so it spans from the onset of ventricular depolarization to the completion of
repolarization.
Question 7. The P wave on the EKG tracing represents:
A. Ventricular depolarization
B. Atrial repolarization
C. Atrial depolarization
D. Ventricular repolarization
Correct Answer: C
Rationale: The P wave is the electrical signature of the impulse spreading through the atria
after firing from the SA node, producing atrial contraction that follows it.
Question 8. Atrial repolarization is usually not seen on the surface EKG because it
is:
A. Hidden within the QRS complex
Relias Dysrhythmia Basic A Test Comprehensive Examination 2026/2027 | Verified Items
