RELIAS DYSRHYTHMIA BASIC TEST ANSWERS 2026 A+ GRADED 100% VERIFIED COMPLETE EXAM STUDY GUIDE

RELIAS DYSRHYTHMIA BASIC TEST ANSWERS
2026 A+ GRADED 100 PERCENT VERIFIED
COMPLETE EXAM STUDY GUIDE
• This study guide contains 200 verified questions and answers covering the Relias
Dysrhythmia Basic Test, designed to help you achieve a 100% score with
confidence.

• Read each question carefully, review the highlighted correct answer and EXPERT
RATIONALE, then challenge yourself by covering the answer before checking —
repetition is key to mastery.



RELIAS DYSRHYTHMIA BASIC TEST — 200 QUESTIONS STUDY GUIDE 2026 A+
GRADED | 100% VERIFIED



QUESTION 1: What is the normal resting heart rate for an adult?

A) 40–60 bpm

B) 50–90 bpm

C) 60–100 bpm

D) 100–120 bpm

E) 120–160 bpm

Correct Answer: C) 60–100 bpm

EXPERT RATIONALE: The normal resting heart rate for an adult is 60–100 beats per
minute. Below 60 is bradycardia; above 100 is tachycardia.



QUESTION 2: Which node is considered the primary pacemaker of the heart?

A) Bundle of His

B) Purkinje fibers

C) AV node

D) Bundle branches

,E) Sinoatrial (SA) node

Correct Answer: E) Sinoatrial (SA) node

EXPERT RATIONALE: The SA node is the heart's natural pacemaker, generating electrical
impulses at 60–100 bpm that initiate each heartbeat.



QUESTION 3: What is the intrinsic firing rate of the AV node?

A) 60–100 bpm

B) 100–150 bpm

C) 15–20 bpm

D) 40–60 bpm

E) 80–100 bpm

Correct Answer: D) 40–60 bpm

EXPERT RATIONALE: The AV node has an intrinsic firing rate of 40–60 bpm and serves as
a backup pacemaker if the SA node fails.



QUESTION 4: What is the intrinsic rate of the Purkinje fibers?

A) 60–100 bpm

B) 40–60 bpm

C) 25–35 bpm

D) 50–70 bpm

E) 20–40 bpm

Correct Answer: E) 20–40 bpm

EXPERT RATIONALE: Purkinje fibers have the lowest intrinsic rate of 20–40 bpm and act
as a last-resort pacemaker in the conduction system.

,QUESTION 5: Which wave on the ECG represents atrial depolarization?

A) T wave

B) QRS complex

C) U wave

D) ST segment

E) P wave

Correct Answer: E) P wave

EXPERT RATIONALE: The P wave represents atrial depolarization — the electrical
activation of the atria that triggers atrial contraction.



QUESTION 6: What does the QRS complex represent?

A) Atrial repolarization

B) Ventricular repolarization

C) SA node firing

D) AV node conduction

E) Ventricular depolarization

Correct Answer: E) Ventricular depolarization

EXPERT RATIONALE: The QRS complex represents ventricular depolarization, which
triggers ventricular contraction (systole).



QUESTION 7: What does the T wave represent?

A) Atrial depolarization

B) Ventricular depolarization

C) AV conduction delay

D) SA node recovery

, E) Ventricular repolarization

Correct Answer: E) Ventricular repolarization

EXPERT RATIONALE: The T wave represents ventricular repolarization — the recovery
phase of the ventricles in preparation for the next beat.



QUESTION 8: What is the normal duration of the PR interval?

A) 0.04–0.08 seconds

B) 0.08–0.10 seconds

C) 0.24–0.30 seconds

D) 0.06–0.10 seconds

E) 0.12–0.20 seconds

Correct Answer: E) 0.12–0.20 seconds

EXPERT RATIONALE: The normal PR interval is 0.12–0.20 seconds (3–5 small boxes on
ECG paper). It reflects conduction from the atria through the AV node.



QUESTION 9: What is the normal QRS duration?

A) 0.20–0.24 seconds

B) 0.10–0.16 seconds

C) 0.04–0.08 seconds

D) Less than 0.12 seconds

E) 0.14–0.20 seconds

Correct Answer: D) Less than 0.12 seconds

EXPERT RATIONALE: A normal QRS complex is less than 0.12 seconds (3 small boxes). A
wider QRS suggests bundle branch block or ventricular origin.