Relias DYSRHYTHMIA BASIC A Exam (2026/2027) Exam Elaboration Questions and Answers Graded A+| 100% Correct Answers 2026/2027 2026/2027 | Page 1
| Passing Score: 85%
RELIAS
Relias DYSRHYTHMIA BASIC A Exam (2026/2027) Exam
Elaboration Questions and Answers Graded A+| 100% Correct
Answers 2026/2027
DYSRHYTHMIA BASIC A · Official Exam 2026/2027
100 85% CERTIFIED
QUESTIONS PASSING SCORE RECERTIFICATION
TABLE OF CONTENTS
Section 1 Cardiac Anatomy and Electrophysiology Q1-Q20
Section 2 Sinus Rhythms and Dysrhythmias Q21-Q40
Section 3 Atrial Dysrhythmias Q41-Q60
Section 4 Ventricular Dysrhythmias and Heart Blocks Q61-Q80
Section 5 ACLS Interventions and Pharmacology Q81-Q100
Instructions: Select the single best answer for each question. This exam is designed for Relias Dysrhythmia Basic A
certification preparation. Passing score: 85% (85 questions correct).
,SECTION 1 | Cardiac Anatomy and Electrophysiology | Q1-Q20 | Relias DYSRHYTHMIA BASIC A Exam (2026/2027) Exam Elaboration Qu
Q1 Question 1 of 100
A 54-year-old male is admitted to the cardiac unit for evaluation of recurrent palpitations. The cardiologist
explains that the electrical impulse normally originates in the sinoatrial node and spreads through the atria
via which internodal pathway before reaching the atrioventricular node?
A. Bachmann bundle and anterior/middle/posterior internodal tracts
B. Bundle of His and Purkinje fibers
C. Left anterior fascicle and left posterior fascicle
D. Right bundle branch and left bundle branch
Correct Answer: A
Rationale:
The SA node impulse spreads through the atria via Bachmann bundle (to the left atrium) and the anterior,
middle, and posterior internodal tracts to reach the AV node. The Bundle of His and Purkinje fibers are part of
the ventricular conduction system, not the atrial pathways.
Q2 Question 2 of 100
A 67-year-old female presents with dizziness and is found to have a heart rate of 42 bpm. The nurse
understands that the atrioventricular node normally delays electrical conduction for approximately how
many seconds to allow for ventricular filling?
A. 0.20 to 0.40 seconds
B. 0.08 to 0.12 seconds
C. 0.40 to 0.60 seconds
D. 0.01 to 0.03 seconds
Correct Answer: B
Rationale:
The AV node delays impulse transmission by approximately 0.08 to 0.12 seconds, which allows adequate time
for atrial contraction and ventricular filling before the ventricles depolarize. Longer delays suggest first-degree
AV block.
Relias DYSRHYTHMIA BASIC A Exam (2026/2027) Exam Elaboration Questions and Answers Graded A+| 100% Correct Answers 2026/2027 -- 2026/2027 |
Passing Score: 85% | Page 2 of 2
,SECTION 1 | Cardiac Anatomy and Electrophysiology | Q1-Q20 | Relias DYSRHYTHMIA BASIC A Exam (2026/2027) Exam Elaboration Qu
Q3 Question 3 of 100
A 45-year-old male undergoes electrophysiology testing that reveals the Purkinje fibers can initiate an
intrinsic rhythm of approximately 20 to 40 bpm. This rhythm becomes clinically significant when which
higher pacemaker fails?
A. Bachmann bundle
B. Sinoatrial node
C. Bundle of His
D. Atrioventricular node
Correct Answer: D
Rationale:
The Purkinje fibers represent the tertiary pacemaker with an intrinsic rate of 20-40 bpm. This escape rhythm
becomes clinically significant when both the SA node (primary, 60-100 bpm) and AV node (secondary, 40-60
bpm) fail to generate impulses.
Q4 Question 4 of 100
A 58-year-old male with a history of myocardial infarction complains of exercise intolerance. The nurse
explains that cardiac output is determined by heart rate multiplied by which other parameter?
A. Mean arterial pressure
B. Systemic vascular resistance
C. Stroke volume
D. Ejection fraction
Correct Answer: C
Rationale:
Cardiac output equals heart rate multiplied by stroke volume (CO = HR x SV). Systemic vascular resistance,
mean arterial pressure, and ejection fraction are related hemodynamic parameters but are not the direct
multiplier for cardiac output.
Relias DYSRHYTHMIA BASIC A Exam (2026/2027) Exam Elaboration Questions and Answers Graded A+| 100% Correct Answers 2026/2027 -- 2026/2027 |
Passing Score: 85% | Page 3 of 3
, SECTION 1 | Cardiac Anatomy and Electrophysiology | Q1-Q20 | Relias DYSRHYTHMIA BASIC A Exam (2026/2027) Exam Elaboration Qu
Q5 Question 5 of 100
A 72-year-old female with heart failure has an ejection fraction of 35%. The nurse recognizes that ejection
fraction is calculated as the percentage of which volume ejected from the left ventricle with each
contraction?
A. End-systolic volume
B. End-diastolic volume
C. Stroke volume divided by end-systolic volume
D. Total blood volume in the body
Correct Answer: B
Rationale:
Ejection fraction is calculated as stroke volume divided by end-diastolic volume, expressed as a percentage. It
represents the proportion of blood ejected from the ventricle during systole relative to the volume at end-diastole.
Normal EF is 55-70%.
Q6 Question 6 of 100
A 63-year-old male with acute coronary syndrome is monitored on telemetry. The nurse observes that the
T wave on the ECG corresponds to which phase of the cardiac action potential?
A. Ventricular repolarization
B. Atrial depolarization
C. Ventricular depolarization
D. AV node conduction delay
Correct Answer: A
Rationale:
The T wave on the ECG represents ventricular repolarization. The P wave represents atrial depolarization, the
QRS complex represents ventricular depolarization, and the PR interval reflects AV node conduction delay.
Relias DYSRHYTHMIA BASIC A Exam (2026/2027) Exam Elaboration Questions and Answers Graded A+| 100% Correct Answers 2026/2027 -- 2026/2027 |
Passing Score: 85% | Page 4 of 4
| Passing Score: 85%
RELIAS
Relias DYSRHYTHMIA BASIC A Exam (2026/2027) Exam
Elaboration Questions and Answers Graded A+| 100% Correct
Answers 2026/2027
DYSRHYTHMIA BASIC A · Official Exam 2026/2027
100 85% CERTIFIED
QUESTIONS PASSING SCORE RECERTIFICATION
TABLE OF CONTENTS
Section 1 Cardiac Anatomy and Electrophysiology Q1-Q20
Section 2 Sinus Rhythms and Dysrhythmias Q21-Q40
Section 3 Atrial Dysrhythmias Q41-Q60
Section 4 Ventricular Dysrhythmias and Heart Blocks Q61-Q80
Section 5 ACLS Interventions and Pharmacology Q81-Q100
Instructions: Select the single best answer for each question. This exam is designed for Relias Dysrhythmia Basic A
certification preparation. Passing score: 85% (85 questions correct).
,SECTION 1 | Cardiac Anatomy and Electrophysiology | Q1-Q20 | Relias DYSRHYTHMIA BASIC A Exam (2026/2027) Exam Elaboration Qu
Q1 Question 1 of 100
A 54-year-old male is admitted to the cardiac unit for evaluation of recurrent palpitations. The cardiologist
explains that the electrical impulse normally originates in the sinoatrial node and spreads through the atria
via which internodal pathway before reaching the atrioventricular node?
A. Bachmann bundle and anterior/middle/posterior internodal tracts
B. Bundle of His and Purkinje fibers
C. Left anterior fascicle and left posterior fascicle
D. Right bundle branch and left bundle branch
Correct Answer: A
Rationale:
The SA node impulse spreads through the atria via Bachmann bundle (to the left atrium) and the anterior,
middle, and posterior internodal tracts to reach the AV node. The Bundle of His and Purkinje fibers are part of
the ventricular conduction system, not the atrial pathways.
Q2 Question 2 of 100
A 67-year-old female presents with dizziness and is found to have a heart rate of 42 bpm. The nurse
understands that the atrioventricular node normally delays electrical conduction for approximately how
many seconds to allow for ventricular filling?
A. 0.20 to 0.40 seconds
B. 0.08 to 0.12 seconds
C. 0.40 to 0.60 seconds
D. 0.01 to 0.03 seconds
Correct Answer: B
Rationale:
The AV node delays impulse transmission by approximately 0.08 to 0.12 seconds, which allows adequate time
for atrial contraction and ventricular filling before the ventricles depolarize. Longer delays suggest first-degree
AV block.
Relias DYSRHYTHMIA BASIC A Exam (2026/2027) Exam Elaboration Questions and Answers Graded A+| 100% Correct Answers 2026/2027 -- 2026/2027 |
Passing Score: 85% | Page 2 of 2
,SECTION 1 | Cardiac Anatomy and Electrophysiology | Q1-Q20 | Relias DYSRHYTHMIA BASIC A Exam (2026/2027) Exam Elaboration Qu
Q3 Question 3 of 100
A 45-year-old male undergoes electrophysiology testing that reveals the Purkinje fibers can initiate an
intrinsic rhythm of approximately 20 to 40 bpm. This rhythm becomes clinically significant when which
higher pacemaker fails?
A. Bachmann bundle
B. Sinoatrial node
C. Bundle of His
D. Atrioventricular node
Correct Answer: D
Rationale:
The Purkinje fibers represent the tertiary pacemaker with an intrinsic rate of 20-40 bpm. This escape rhythm
becomes clinically significant when both the SA node (primary, 60-100 bpm) and AV node (secondary, 40-60
bpm) fail to generate impulses.
Q4 Question 4 of 100
A 58-year-old male with a history of myocardial infarction complains of exercise intolerance. The nurse
explains that cardiac output is determined by heart rate multiplied by which other parameter?
A. Mean arterial pressure
B. Systemic vascular resistance
C. Stroke volume
D. Ejection fraction
Correct Answer: C
Rationale:
Cardiac output equals heart rate multiplied by stroke volume (CO = HR x SV). Systemic vascular resistance,
mean arterial pressure, and ejection fraction are related hemodynamic parameters but are not the direct
multiplier for cardiac output.
Relias DYSRHYTHMIA BASIC A Exam (2026/2027) Exam Elaboration Questions and Answers Graded A+| 100% Correct Answers 2026/2027 -- 2026/2027 |
Passing Score: 85% | Page 3 of 3
, SECTION 1 | Cardiac Anatomy and Electrophysiology | Q1-Q20 | Relias DYSRHYTHMIA BASIC A Exam (2026/2027) Exam Elaboration Qu
Q5 Question 5 of 100
A 72-year-old female with heart failure has an ejection fraction of 35%. The nurse recognizes that ejection
fraction is calculated as the percentage of which volume ejected from the left ventricle with each
contraction?
A. End-systolic volume
B. End-diastolic volume
C. Stroke volume divided by end-systolic volume
D. Total blood volume in the body
Correct Answer: B
Rationale:
Ejection fraction is calculated as stroke volume divided by end-diastolic volume, expressed as a percentage. It
represents the proportion of blood ejected from the ventricle during systole relative to the volume at end-diastole.
Normal EF is 55-70%.
Q6 Question 6 of 100
A 63-year-old male with acute coronary syndrome is monitored on telemetry. The nurse observes that the
T wave on the ECG corresponds to which phase of the cardiac action potential?
A. Ventricular repolarization
B. Atrial depolarization
C. Ventricular depolarization
D. AV node conduction delay
Correct Answer: A
Rationale:
The T wave on the ECG represents ventricular repolarization. The P wave represents atrial depolarization, the
QRS complex represents ventricular depolarization, and the PR interval reflects AV node conduction delay.
Relias DYSRHYTHMIA BASIC A Exam (2026/2027) Exam Elaboration Questions and Answers Graded A+| 100% Correct Answers 2026/2027 -- 2026/2027 |
Passing Score: 85% | Page 4 of 4
