Relias Dysrhythmia Basic A - Complete Exam Guide
& Practice Test - EKG Rhythm Identification & Strip
Interpretation
Rhythm Identification Exam (30 items)
Use the 5-point description to choose the single best rhythm name.
Q1
5-Point Rhythm Description:
[1] Rate: 72 bpm.
[2] Rhythm: Regular.
[3] P Waves: Present & normal, upright before each QRS.
[4] PR Interval: Normal (0.16 s) & constant.
[5] QRS Complex: Narrow (0.08 s).
Question: Based on the 5-point description, what is the correct rhythm interpretation?
A. Normal Sinus Rhythm
B. Sinus Tachycardia
C. First-Degree AV Block
D. Sinus Arrhythmia
,Correct Answer: A
Rationale: Meets every criterion for Normal Sinus Rhythm: rate 60-100, regular, normal
P-QRS relationship, normal PR, narrow QRS. It is not Sinus Tachycardia (B) because rate
is < 100 bpm.
Q2
[1] Rate: 48 bpm.
[2] Rhythm: Regular.
[3] P Waves: Present & normal, upright.
[4] PR Interval: Normal (0.18 s) & constant.
[5] QRS Complex: Narrow (0.09 s).
A. Junctional Rhythm
B. Sinus Bradycardia
C. First-Degree AV Block
D. Idioventricular Rhythm
Correct Answer: B
Rationale: Sinus node origin with rate < 60 bpm and normal conduction intervals = Sinus
Bradycardia. It is not Junctional Rhythm (A) because junctional would lack normal
upright P waves or show inverted P/short PR.
Q3
[1] Rate: 110 bpm.
, [2] Rhythm: Regular.
[3] P Waves: Present & normal.
[4] PR Interval: Normal (0.15 s) & constant.
[5] QRS Complex: Narrow (0.07 s).
A. Sinus Tachycardia
B. SVT
C. Atrial Flutter 2:1
D. Ventricular Tachycardia
Correct Answer: A
Rationale: Rate 100-160 bpm with normal sinus characteristics—Sinus Tachycardia. It is
not SVT (B) because sinus P waves are clearly visible and rate is within sinus range.
Q4
[1] Rate: 300 bpm atrial; ventricular 75 bpm.
[2] Rhythm: Atrial regular, ventricular regular.
[3] P Waves: Saw-tooth flutter waves.
[4] PR Interval: Not measurable (flutter-to-QRS ratio 4:1).
[5] QRS Complex: Narrow (0.08 s).
A. Atrial Fibrillation
B. Atrial Flutter 4:1
& Practice Test - EKG Rhythm Identification & Strip
Interpretation
Rhythm Identification Exam (30 items)
Use the 5-point description to choose the single best rhythm name.
Q1
5-Point Rhythm Description:
[1] Rate: 72 bpm.
[2] Rhythm: Regular.
[3] P Waves: Present & normal, upright before each QRS.
[4] PR Interval: Normal (0.16 s) & constant.
[5] QRS Complex: Narrow (0.08 s).
Question: Based on the 5-point description, what is the correct rhythm interpretation?
A. Normal Sinus Rhythm
B. Sinus Tachycardia
C. First-Degree AV Block
D. Sinus Arrhythmia
,Correct Answer: A
Rationale: Meets every criterion for Normal Sinus Rhythm: rate 60-100, regular, normal
P-QRS relationship, normal PR, narrow QRS. It is not Sinus Tachycardia (B) because rate
is < 100 bpm.
Q2
[1] Rate: 48 bpm.
[2] Rhythm: Regular.
[3] P Waves: Present & normal, upright.
[4] PR Interval: Normal (0.18 s) & constant.
[5] QRS Complex: Narrow (0.09 s).
A. Junctional Rhythm
B. Sinus Bradycardia
C. First-Degree AV Block
D. Idioventricular Rhythm
Correct Answer: B
Rationale: Sinus node origin with rate < 60 bpm and normal conduction intervals = Sinus
Bradycardia. It is not Junctional Rhythm (A) because junctional would lack normal
upright P waves or show inverted P/short PR.
Q3
[1] Rate: 110 bpm.
, [2] Rhythm: Regular.
[3] P Waves: Present & normal.
[4] PR Interval: Normal (0.15 s) & constant.
[5] QRS Complex: Narrow (0.07 s).
A. Sinus Tachycardia
B. SVT
C. Atrial Flutter 2:1
D. Ventricular Tachycardia
Correct Answer: A
Rationale: Rate 100-160 bpm with normal sinus characteristics—Sinus Tachycardia. It is
not SVT (B) because sinus P waves are clearly visible and rate is within sinus range.
Q4
[1] Rate: 300 bpm atrial; ventricular 75 bpm.
[2] Rhythm: Atrial regular, ventricular regular.
[3] P Waves: Saw-tooth flutter waves.
[4] PR Interval: Not measurable (flutter-to-QRS ratio 4:1).
[5] QRS Complex: Narrow (0.08 s).
A. Atrial Fibrillation
B. Atrial Flutter 4:1
