Relias Dysrhythmia Basic ACTUAL EXAM TEST BANK A & B 2026/2027 | Verified Questions and Correct Answers | EKG Rhythm Identification | Pass Guaranteed - A+ Graded

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Relias Dysrhythmia Basic ACTUAL EXAM
TEST BANK A & B 2026/2027 | Verified
Questions and Correct Answers | EKG Rhythm
Identification | Pass Guaranteed - A+ Graded

SECTION 1 – Normal Sinus Rhythm & Sinus Node Dysrhythmias (Questions 1-10)

1. [STRIP DESCRIPTION] Regular rhythm, rate 76 bpm, P waves upright and uniform
before each QRS, PR interval 0.16 sec and constant, QRS 0.08 sec.
The nurse identifies this rhythm as:
A. Sinus bradycardia
B. Normal sinus rhythm
C. Sinus tachycardia
D. First-degree AV block

Correct Answer: B
Rationale: All criteria met—regular, 60-100 bpm, normal P-QRS relationship, PR 0.12-0.20
s, QRS <0.12 s.

2. [STRIP DESCRIPTION] Regular rhythm, rate 50 bpm, normal P-wave morphology, PR
0.18 sec constant, QRS narrow.
Rhythm interpretation:
A. Normal sinus rhythm
B. Sinus bradycardia
C. Sinus arrhythmia
D. Junctional rhythm

Correct Answer: B
Rationale: Rate <60 bpm with sinus characteristics = sinus bradycardia.

3. [STRIP DESCRIPTION] Regular rhythm, rate 110 bpm, P waves uniform, PR 0.14 sec,
QRS 0.09 sec.
Interpretation:
A. Sinus tachycardia
B. SVT

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C. Atrial flutter
D. VT

Correct Answer: A
Rationale: Rate 100-160 bpm, clear sinus P waves = sinus tachycardia.

4. [STRIP DESCRIPTION] Irregular rhythm, rate varies between 62 and 78 bpm; P waves
identical, PR constant, QRS narrow; cycle length changes with respiration.
This is:
A. Sinus arrhythmia
B. Atrial fibrillation
C. Second-degree AV block
D. PACs

Correct Answer: A
Rationale: Phasic irregularity with unchanging P morphology and normal intervals = sinus
arrhythmia (respiratory).

5. [STRIP DESCRIPTION] Regular rhythm, rate 48 bpm, P waves upright, PR 0.22 sec,
QRS 0.10 sec.
Interpretation:
A. Sinus bradycardia with first-degree AV block
B. Normal sinus rhythm
C. Junctional bradycardia
D. Second-degree AV block type I

Correct Answer: A
Rationale: Sinus bradycardia (rate <60) plus PR >0.20 s = first-degree block present.

6. [STRIP DESCRIPTION] Regular rhythm, rate 52 bpm, P waves inverted in lead II, PR
0.12 sec, QRS narrow.
This rhythm originates from the:
A. SA node
B. AV junction (ectopic)
C. Atrial focus
D. Ventricles

Correct Answer: B
Rationale: Inverted P in II with short PR and narrow QRS suggests low-atrial/AV
junctional escape, not sinus.

7. [STRIP DESCRIPTION] Regular rhythm, rate 130 bpm, P waves upright and uniform,
PR 0.15 sec, QRS narrow; patient febrile 38.9 °C.
Priority action: