Page 1 of 42
Basic Dysrhythmia Assessment A Test 35
Questions and Answers (Basic A
Dysrhythmia), 100% Guaranteed Pass ||
Complete A+ Guide
1. Regular rhythm, rate 78 bpm, P wave before each QRS, PR
0.16 sec, QRS 0.08 sec.
Answer: Normal Sinus Rhythm (NSR)
Rationale: All normal criteria met: rate 60-100, regular,
P:QRS 1:1, normal intervals.
2. Irregularly irregular rhythm, rate 150 bpm, no P waves,
narrow QRS.
Answer: Atrial Fibrillation
Rationale: No organized atrial activity; irregular ventricular
response.
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3. Regular rhythm, rate 48 bpm, P wave before each QRS, PR
0.18 sec, QRS 0.10 sec.
Answer: Sinus Bradycardia
Rationale: Rate <60 bpm, otherwise normal.
4. Regular rhythm, rate 118 bpm, P wave before each QRS,
PR 0.16 sec, QRS 0.08 sec.
Answer: Sinus Tachycardia
Rationale: Rate >100 bpm, normal conduction.
5. Rhythm irregular, rate 180 bpm, sawtooth flutter waves,
QRS narrow.
Answer: Atrial Flutter (typical 2:1 block)
Rationale: Flutter waves (F waves) best seen in II, III, aVF.
6. Regular rhythm, rate 160 bpm, no visible P waves, narrow
QRS, abrupt onset/offset.
Answer: Supraventricular Tachycardia (SVT) – AV nodal
reentry
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Rationale: Regular narrow complex tachycardia without P
waves.
7. Regular rhythm, rate 42 bpm, no P waves, narrow QRS
(0.10 sec).
Answer: Junctional Rhythm
Rationale: Absent P waves (or inverted in inferior leads), rate
40-60.
8. Regular rhythm, rate 52 bpm, inverted P wave before QRS,
PR 0.10 sec, QRS 0.08 sec.
Answer: Accelerated Junctional Rhythm
Rationale: Rate 60-100 is accelerated junctional; here 52 is
junctional rhythm (40-60).
9. Regular rhythm, rate 32 bpm, wide QRS (0.14 sec), no P
waves.
Answer: Idioventricular Rhythm
Rationale: Rate 20-40 bpm, wide QRS, no atrial activity.
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10. Regular rhythm, rate 68 bpm, wide QRS (0.14 sec), no P
m. m. m. m. m. m. m. m. m. m.
m. waves.
Answer: Accelerated Idioventricular Rhythm (AIVR)
m . m . m . m .
Rationale: Rate 40-100 bpm, wide QRS, common post-MI.
m. m. m. m. m. m. m.
11. Rhythm: chaotic, irregular waveform, no identifiable
m. m. m. m. m.
m. complexes, no pulse. m. m.
Answer: Ventricular Fibrillation (VF – coarse or fine) Rationale:
m. m. m. m. m. m. m. m.
Disorganized ventricular activity; immediate defibrillation.
m. m. m. m. m.
12. Regular rhythm, rate 150 bpm, wide QRS (0.14 sec), no P
m. m. m. m. m. m. m. m. m. m.
m. waves, monomorphic.
m.
Answer: Monomorphic Ventricular Tachycardia (VT)
m. m. m. m.
m. Rationale: Wide QRS tachycardia without atrial activity;
m. m. m. m. m. m.
m. assume VT if unstable.
m. m. m.
13. Rhythm: occasional early narrow QRS with abnormal P
m. m. m. m. m. m. m.
m. wave, compensatory pause.
m. m.
Answer: Premature Atrial Complex (PAC)
m. m. m. m.
Basic Dysrhythmia Assessment A Test 35
Questions and Answers (Basic A
Dysrhythmia), 100% Guaranteed Pass ||
Complete A+ Guide
1. Regular rhythm, rate 78 bpm, P wave before each QRS, PR
0.16 sec, QRS 0.08 sec.
Answer: Normal Sinus Rhythm (NSR)
Rationale: All normal criteria met: rate 60-100, regular,
P:QRS 1:1, normal intervals.
2. Irregularly irregular rhythm, rate 150 bpm, no P waves,
narrow QRS.
Answer: Atrial Fibrillation
Rationale: No organized atrial activity; irregular ventricular
response.
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3. Regular rhythm, rate 48 bpm, P wave before each QRS, PR
0.18 sec, QRS 0.10 sec.
Answer: Sinus Bradycardia
Rationale: Rate <60 bpm, otherwise normal.
4. Regular rhythm, rate 118 bpm, P wave before each QRS,
PR 0.16 sec, QRS 0.08 sec.
Answer: Sinus Tachycardia
Rationale: Rate >100 bpm, normal conduction.
5. Rhythm irregular, rate 180 bpm, sawtooth flutter waves,
QRS narrow.
Answer: Atrial Flutter (typical 2:1 block)
Rationale: Flutter waves (F waves) best seen in II, III, aVF.
6. Regular rhythm, rate 160 bpm, no visible P waves, narrow
QRS, abrupt onset/offset.
Answer: Supraventricular Tachycardia (SVT) – AV nodal
reentry
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Rationale: Regular narrow complex tachycardia without P
waves.
7. Regular rhythm, rate 42 bpm, no P waves, narrow QRS
(0.10 sec).
Answer: Junctional Rhythm
Rationale: Absent P waves (or inverted in inferior leads), rate
40-60.
8. Regular rhythm, rate 52 bpm, inverted P wave before QRS,
PR 0.10 sec, QRS 0.08 sec.
Answer: Accelerated Junctional Rhythm
Rationale: Rate 60-100 is accelerated junctional; here 52 is
junctional rhythm (40-60).
9. Regular rhythm, rate 32 bpm, wide QRS (0.14 sec), no P
waves.
Answer: Idioventricular Rhythm
Rationale: Rate 20-40 bpm, wide QRS, no atrial activity.
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10. Regular rhythm, rate 68 bpm, wide QRS (0.14 sec), no P
m. m. m. m. m. m. m. m. m. m.
m. waves.
Answer: Accelerated Idioventricular Rhythm (AIVR)
m . m . m . m .
Rationale: Rate 40-100 bpm, wide QRS, common post-MI.
m. m. m. m. m. m. m.
11. Rhythm: chaotic, irregular waveform, no identifiable
m. m. m. m. m.
m. complexes, no pulse. m. m.
Answer: Ventricular Fibrillation (VF – coarse or fine) Rationale:
m. m. m. m. m. m. m. m.
Disorganized ventricular activity; immediate defibrillation.
m. m. m. m. m.
12. Regular rhythm, rate 150 bpm, wide QRS (0.14 sec), no P
m. m. m. m. m. m. m. m. m. m.
m. waves, monomorphic.
m.
Answer: Monomorphic Ventricular Tachycardia (VT)
m. m. m. m.
m. Rationale: Wide QRS tachycardia without atrial activity;
m. m. m. m. m. m.
m. assume VT if unstable.
m. m. m.
13. Rhythm: occasional early narrow QRS with abnormal P
m. m. m. m. m. m. m.
m. wave, compensatory pause.
m. m.
Answer: Premature Atrial Complex (PAC)
m. m. m. m.
