Relias Dysrhythmia Basic A Exam Simulation -
Rhythm Identification from Strip Description - EKG
Practice Test Bank
Instructions: Read each EKG description carefully and select the correct rhythm name.
Q1
Strip: Rate 72 bpm – Regular – P waves present/normal/upright before each QRS – PR
0.18 s and constant – QRS narrow 0.08 s
Question: Which rhythm?
A. Sinus Arrhythmia
B. Normal Sinus Rhythm
C. First-Degree AV Block
D. Sinus Rhythm with PACs
Correct Answer: B
Rationale: Meets all NSR criteria: regular 60-100 bpm, normal P-QRS relationship, PR
0.12-0.20 s, narrow QRS. PR is normal, so not first-degree block.
Q2
Strip: Ventricular rate 30 bpm – Regular – P waves present but no relation to QRS (AV
dissociation) – PR variable – QRS wide >0.12 s
,Question: Which rhythm?
A. Second-Degree AV Block Type I
B. Sinus Bradycardia with PVCs
C. Junctional Rhythm
D. Third-Degree AV Block
Correct Answer: D
Rationale: Complete AV dissociation, slower regular ventricular escape, wide
QRS—classic complete heart block.
Q3
Strip: Rate 48 bpm – Regular – P waves normal/upright before each QRS – PR 0.16 s
constant – QRS narrow 0.09 s
Question: Which rhythm?
A. Junctional Rhythm
B. Sinus Bradycardia
C. First-Degree AV Block
D. Idioventricular Rhythm
Correct Answer: B
Rationale: Sinus node origin (normal P morphology), regular, rate < 60 bpm, normal
conduction intervals.
, Q4
Strip: Ventricular rate 150-160 bpm – Regular – P waves absent – PR not measurable –
QRS narrow 0.07 s
Question: Which rhythm?
A. Sinus Tachycardia
B. Atrial Flutter
C. Supraventricular Tachycardia (SVT)
D. Ventricular Tachycardia
Correct Answer: C
Rationale: abrupt rapid narrow-complex tachycardia without discernible P
waves—typical SVT.
Q5
Strip: Ventricular rate ~90 bpm – Irregularly irregular – P waves absent – baseline
flutter waves (saw-tooth) at 300 bpm – QRS narrow
Question: Which rhythm?
A. Atrial Fibrillation
B. Atrial Flutter with variable AV conduction
C. Sinus Rhythm with PACs
D. SVT
Rhythm Identification from Strip Description - EKG
Practice Test Bank
Instructions: Read each EKG description carefully and select the correct rhythm name.
Q1
Strip: Rate 72 bpm – Regular – P waves present/normal/upright before each QRS – PR
0.18 s and constant – QRS narrow 0.08 s
Question: Which rhythm?
A. Sinus Arrhythmia
B. Normal Sinus Rhythm
C. First-Degree AV Block
D. Sinus Rhythm with PACs
Correct Answer: B
Rationale: Meets all NSR criteria: regular 60-100 bpm, normal P-QRS relationship, PR
0.12-0.20 s, narrow QRS. PR is normal, so not first-degree block.
Q2
Strip: Ventricular rate 30 bpm – Regular – P waves present but no relation to QRS (AV
dissociation) – PR variable – QRS wide >0.12 s
,Question: Which rhythm?
A. Second-Degree AV Block Type I
B. Sinus Bradycardia with PVCs
C. Junctional Rhythm
D. Third-Degree AV Block
Correct Answer: D
Rationale: Complete AV dissociation, slower regular ventricular escape, wide
QRS—classic complete heart block.
Q3
Strip: Rate 48 bpm – Regular – P waves normal/upright before each QRS – PR 0.16 s
constant – QRS narrow 0.09 s
Question: Which rhythm?
A. Junctional Rhythm
B. Sinus Bradycardia
C. First-Degree AV Block
D. Idioventricular Rhythm
Correct Answer: B
Rationale: Sinus node origin (normal P morphology), regular, rate < 60 bpm, normal
conduction intervals.
, Q4
Strip: Ventricular rate 150-160 bpm – Regular – P waves absent – PR not measurable –
QRS narrow 0.07 s
Question: Which rhythm?
A. Sinus Tachycardia
B. Atrial Flutter
C. Supraventricular Tachycardia (SVT)
D. Ventricular Tachycardia
Correct Answer: C
Rationale: abrupt rapid narrow-complex tachycardia without discernible P
waves—typical SVT.
Q5
Strip: Ventricular rate ~90 bpm – Irregularly irregular – P waves absent – baseline
flutter waves (saw-tooth) at 300 bpm – QRS narrow
Question: Which rhythm?
A. Atrial Fibrillation
B. Atrial Flutter with variable AV conduction
C. Sinus Rhythm with PACs
D. SVT
