RELIAS Dysrhythmia Basic B Exam – (2 NEW VERSIONS) Questions with Answers & Rationales LATEST UPDATE THIS YEAR PDF

RELIAS Dysrhythmia Basic B Exam – (2
NEW VERSIONS) Questions with Answers
& Rationales LATEST UPDATE THIS
YEAR> PDF


SUMMARIZED COVERAGE

 Basic ECG Interpretation – Heart rate, rhythm regularity, P waves, PR intervals, QRS
complexes, and T waves.
 Normal Sinus Rhythm – Recognition of normal sinus rhythm and common sinus-rate
variations.
 Sinus Dysrhythmias – Sinus bradycardia, sinus tachycardia, and sinus arrhythmia.
 Atrial Dysrhythmias – Atrial fibrillation, atrial flutter, premature atrial contractions, and
supraventricular tachycardia.
 Ventricular Dysrhythmias – PVCs, ventricular tachycardia, ventricular fibrillation, and
related rhythm characteristics.
 AV Conduction Blocks – First-degree, second-degree Type I, second-degree Type II,
and third-degree AV blocks.
 Junctional Rhythms – Recognition of junctional rhythms, rate patterns, and P-wave
characteristics.
 Rate Calculation – ECG rate calculation using large-box and rhythm-interpretation
methods.
 Rhythm Assessment – Systematic evaluation of rate, regularity, P waves, PR intervals,
QRS complexes, and conduction.
 Hemodynamic Assessment – Blood pressure, perfusion, pulse quality, oxygenation,
symptoms, and level of consciousness.
 Telemetry & Artifact – Identifying possible artifact, checking electrodes, and
correlating monitor findings with patient assessment.
 Clinical Priorities – Recognizing potentially unstable dysrhythmias and prioritizing
appropriate assessment and escalation.
 Comprehensive Review – Mixed Dysrhythmia Basic B practice questions designed to
reinforce cardiac rhythm interpretation and nursing knowledge.




Question 1

,A cardiac rhythm strip shows a regular rhythm with a ventricular rate of 72 beats/minute.
Each QRS complex is preceded by a consistent P wave, and the PR interval remains within
the expected range. Which rhythm is most consistent with these findings?

 A. Atrial fibrillation

 B. Normal sinus rhythm

 C. Ventricular tachycardia

 D. Junctional rhythm

Answer: B. Normal sinus rhythm

Rationale: Normal sinus rhythm originates from the sinoatrial node and typically has a
regular rate, consistent P waves before each QRS, and a normal PR interval.



Question 2

While reviewing a rhythm strip, the nurse notes that the ventricular rate is 48 beats/minute,
the rhythm is regular, and every QRS complex follows a normal-appearing P wave. Which
rhythm should the nurse identify?

 A. Sinus bradycardia

 B. Sinus tachycardia

 C. Atrial flutter

 D. Ventricular fibrillation

Answer: A. Sinus bradycardia

Rationale: Sinus bradycardia has normal sinus conduction but a rate below approximately
60 beats/minute in adults.

,Question 3

A patient has a regular rhythm with a heart rate of 118 beats/minute. P waves appear before
every QRS complex, and the PR intervals are consistent. Which interpretation is most
appropriate?

 A. Atrial fibrillation

 B. Complete heart block

 C. Sinus tachycardia

 D. Ventricular fibrillation

Answer: C. Sinus tachycardia

Rationale: Sinus tachycardia maintains normal sinus-waveform relationships while the heart
rate exceeds approximately 100 beats/minute.



Question 4

Which ECG characteristic is most helpful when determining whether an atrial rhythm
originates from the sinoatrial node?

 A. Wide QRS complexes

 B. Absent ventricular activity

 C. Irregular ventricular response

 D. Consistent P waves preceding QRS complexes

Answer: D. Consistent P waves preceding QRS complexes

, Rationale: Sinus-origin rhythms generally demonstrate organized P waves preceding each
normally conducted QRS complex.



Question 5

A patient reports a sudden sensation of a racing heartbeat. The rhythm strip demonstrates
an irregularly irregular ventricular rhythm with no clearly identifiable, consistent P waves.
Which rhythm is most likely?

 A. Sinus tachycardia

 B. Atrial fibrillation

 C. First-degree AV block

 D. Sinus bradycardia

Answer: B. Atrial fibrillation

Rationale: Atrial fibrillation characteristically produces chaotic atrial activity and an
irregularly irregular ventricular response.



Question 6

A rhythm strip shows a continuous, repetitive “sawtooth” atrial pattern with several atrial
waves occurring for each ventricular complex. Which rhythm is being demonstrated?

 A. Atrial flutter

 B. Ventricular fibrillation

 C. Sinus arrhythmia