Relias Advanced Dysrhythmia Exam B Actual Exam
2026/2027 | Questions with Verified Answers |
100% Correct | Pass Guaranteed
SECTION 1: Complex Sinus & Atrial Dysrhythmias (10 Questions)
Q1.
EKG Description: Rhythm: Irregularly irregular. Rate: 140–160 bpm. P waves: Absent;
baseline shows fine undulating activity. QRS: Narrow (0.08 s). ST/T: Not discernible.
A. Atrial flutter with 2:1 conduction
B. Atrial fibrillation with RVR
C. Multifocal atrial tachycardia
D. Sinus tachycardia with PACs
Correct Answer: B
Rationale:
1. Regularity: Irregularly irregular.
2. Rate: 140–160 bpm.
3. P waves: Absent; baseline undulation = fibrillatory waves.
4. PR: Not measurable.
5. QRS: Narrow.
6. Interpretation: Atrial fibrillation with RVR.
7. Clinical: Control rate/anticoagulate; unstable → synchronized cardioversion.
,Q2.
EKG Description: Rhythm: Irregular with grouped beating. Rate: Avg 90 bpm. P waves: ≥3
morphologies in single lead. PR: Varies beat-to-beat. QRS: Narrow (0.07 s).
A. Wandering atrial pacemaker
B. Multifocal atrial tachycardia
C. Atrial flutter with variable block
D. Sinus arrhythmia
Correct Answer: B
Rationale:
1. Irregular.
2. Rate 90 bpm (≥100 = MAT; 60–100 borderline—here 90 with ≥3 P morphologies
still called MAT).
3. ≥3 P shapes.
4. Variable PR.
5. Narrow QRS.
6. MAT (COPD common).
7. Treat underlying cause; Mg/verapamil if symptomatic.
Q3.
EKG Description: Rhythm: Regular. Rate: 50 bpm. P waves: Inverted before each QRS in
lead II. PR: 0.10 s. QRS: Narrow (0.08 s).
A. Low-atrial rhythm
B. Junctional rhythm
,C. Sinus bradycardia
D. 1° AV block
Correct Answer: B
Rationale:
1. Regular.
2. Rate 50.
3. P inverted (retrograde) → junctional origin.
4. Short PR (0.10).
5. Narrow QRS.
6. Junctional bradycardia.
7. If symptomatic → atropine; otherwise observe.
Q4.
EKG Description: Rhythm: Irregular. Rate: 70–120 bpm (varies with respiration). P
waves: Upright, identical; one P before each QRS. PR: 0.14 s constant. QRS: Narrow.
A. Sinus arrhythmia
B. Sick sinus syndrome
C. WAP
D. MAT
Correct Answer: A
Rationale:
1. Irregular but phasic.
2. Rate 70–120 (respiratory variation).
3. Identical P waves.
, 4. Constant PR.
5. Narrow QRS.
6. Sinus arrhythmia (benign).
7. No treatment.
Q5.
EKG Description: Rhythm: Long sinus pauses (3.2 s) followed by junctional escape
beats. Rate: 30–40 bpm during pauses. P waves: Normal when present. PR: 0.16 s. QRS:
Narrow.
A. Sinus bradycardia
B. Sino-atrial exit block
C. Sick sinus syndrome (brady-tachy variant)
D. 3° AV block
Correct Answer: C
Rationale:
1. Pauses → SA node failure.
2. Escape junctional rhythm.
3. Normal P/PR when SA resumes.
4. Narrow QRS.
5. Interpretation: Tachy-brady syndrome.
6. Clinical: Syncope risk → permanent pacemaker.
Q6.
EKG Description: Rhythm: Regular except one concealed P (non-conducted PAC) every
4th beat. Rate: Basic 75 bpm. P waves: Identical; one non-conducted P after every 3
QRS. QRS: Narrow.
2026/2027 | Questions with Verified Answers |
100% Correct | Pass Guaranteed
SECTION 1: Complex Sinus & Atrial Dysrhythmias (10 Questions)
Q1.
EKG Description: Rhythm: Irregularly irregular. Rate: 140–160 bpm. P waves: Absent;
baseline shows fine undulating activity. QRS: Narrow (0.08 s). ST/T: Not discernible.
A. Atrial flutter with 2:1 conduction
B. Atrial fibrillation with RVR
C. Multifocal atrial tachycardia
D. Sinus tachycardia with PACs
Correct Answer: B
Rationale:
1. Regularity: Irregularly irregular.
2. Rate: 140–160 bpm.
3. P waves: Absent; baseline undulation = fibrillatory waves.
4. PR: Not measurable.
5. QRS: Narrow.
6. Interpretation: Atrial fibrillation with RVR.
7. Clinical: Control rate/anticoagulate; unstable → synchronized cardioversion.
,Q2.
EKG Description: Rhythm: Irregular with grouped beating. Rate: Avg 90 bpm. P waves: ≥3
morphologies in single lead. PR: Varies beat-to-beat. QRS: Narrow (0.07 s).
A. Wandering atrial pacemaker
B. Multifocal atrial tachycardia
C. Atrial flutter with variable block
D. Sinus arrhythmia
Correct Answer: B
Rationale:
1. Irregular.
2. Rate 90 bpm (≥100 = MAT; 60–100 borderline—here 90 with ≥3 P morphologies
still called MAT).
3. ≥3 P shapes.
4. Variable PR.
5. Narrow QRS.
6. MAT (COPD common).
7. Treat underlying cause; Mg/verapamil if symptomatic.
Q3.
EKG Description: Rhythm: Regular. Rate: 50 bpm. P waves: Inverted before each QRS in
lead II. PR: 0.10 s. QRS: Narrow (0.08 s).
A. Low-atrial rhythm
B. Junctional rhythm
,C. Sinus bradycardia
D. 1° AV block
Correct Answer: B
Rationale:
1. Regular.
2. Rate 50.
3. P inverted (retrograde) → junctional origin.
4. Short PR (0.10).
5. Narrow QRS.
6. Junctional bradycardia.
7. If symptomatic → atropine; otherwise observe.
Q4.
EKG Description: Rhythm: Irregular. Rate: 70–120 bpm (varies with respiration). P
waves: Upright, identical; one P before each QRS. PR: 0.14 s constant. QRS: Narrow.
A. Sinus arrhythmia
B. Sick sinus syndrome
C. WAP
D. MAT
Correct Answer: A
Rationale:
1. Irregular but phasic.
2. Rate 70–120 (respiratory variation).
3. Identical P waves.
, 4. Constant PR.
5. Narrow QRS.
6. Sinus arrhythmia (benign).
7. No treatment.
Q5.
EKG Description: Rhythm: Long sinus pauses (3.2 s) followed by junctional escape
beats. Rate: 30–40 bpm during pauses. P waves: Normal when present. PR: 0.16 s. QRS:
Narrow.
A. Sinus bradycardia
B. Sino-atrial exit block
C. Sick sinus syndrome (brady-tachy variant)
D. 3° AV block
Correct Answer: C
Rationale:
1. Pauses → SA node failure.
2. Escape junctional rhythm.
3. Normal P/PR when SA resumes.
4. Narrow QRS.
5. Interpretation: Tachy-brady syndrome.
6. Clinical: Syncope risk → permanent pacemaker.
Q6.
EKG Description: Rhythm: Regular except one concealed P (non-conducted PAC) every
4th beat. Rate: Basic 75 bpm. P waves: Identical; one non-conducted P after every 3
QRS. QRS: Narrow.
