Page 1 of 89
Kaiser South Rhythm Interpretation
Assessment: Complete KP KP Rhythm
Interpretation Assessment | Answered 100%
Correctly 50 Questions and Aswers | Latest
Fall 2026/2027|instant pdf download
Q1. What are the three criteria for identifying a rhythm as
normal sinus rhythm (NSR)?
A) Rate 60–100 bpm, regular rhythm, upright P wave before
each QRS
B) Rate 40–60 bpm, irregular rhythm, absent P waves
C) Rate >100 bpm, inverted P waves, wide QRS
D) Rate 20–40 bpm, no P waves, regular
✅ Answer: A – Rate 60–100 bpm, regular rhythm, upright P
wave before each QRS
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Rationale: NSR requires a rate between 60 and 100, a regular
R-R interval, and each QRS preceded by an upright P wave in
lead II (indicating sinus origin).
Q2. What is the normal duration of the PR interval?
A) 0.04–0.10 sec
B) 0.12–0.20 sec (3–5 small boxes)
C) 0.20–0.30 sec
D) 0.35–0.44 sec
✅ Answer: B – 0.12–0.20 sec (3–5 small boxes)
Rationale: The PR interval measures from the start of the P wave
to the start of the QRS complex. Prolongation (>0.20 sec)
indicates first-degree AV block.
Q3. The QRS duration in normal sinus rhythm should be less
than:
A) 0.06 sec
B) 0.10 sec
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C) 0.12 sec
D) 0.20 sec
✅ Answer: C – 0.12 sec (3 small boxes)
Rationale: A narrow QRS (<0.12 sec) indicates supraventricular
origin (sinus, atrial, or junctional). Wide QRS (≥0.12 sec)
suggests ventricular origin or bundle branch block.
Q4. Sinus bradycardia is defined as a sinus rhythm with a
rate less than:
A) 40 bpm
B) 50 bpm
C) 60 bpm
D) 70 bpm
✅ Answer: C – 60 bpm
Rationale: Sinus bradycardia is a sinus rhythm (P wave before
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each QRS) with a rate below 60 bpm. It can be normal in
athletes or during sleep.
Q5. Sinus tachycardia is defined as a sinus rhythm with a rate
greater than:
A) 80 bpm
B) 90 bpm
C) 100 bpm
D) 120 bpm
✅ Answer: C – 100 bpm
Rationale: Sinus tachycardia is a sinus rhythm with a rate >100
bpm, typically caused by fever, pain, exercise, anxiety, or
hyperthyroidism.
Q6. In sinus arrhythmia, the R-R interval varies by more than:
A) 0.04 sec
B) 0.08 sec
Kaiser South Rhythm Interpretation
Assessment: Complete KP KP Rhythm
Interpretation Assessment | Answered 100%
Correctly 50 Questions and Aswers | Latest
Fall 2026/2027|instant pdf download
Q1. What are the three criteria for identifying a rhythm as
normal sinus rhythm (NSR)?
A) Rate 60–100 bpm, regular rhythm, upright P wave before
each QRS
B) Rate 40–60 bpm, irregular rhythm, absent P waves
C) Rate >100 bpm, inverted P waves, wide QRS
D) Rate 20–40 bpm, no P waves, regular
✅ Answer: A – Rate 60–100 bpm, regular rhythm, upright P
wave before each QRS
,Page 2 of 89
Rationale: NSR requires a rate between 60 and 100, a regular
R-R interval, and each QRS preceded by an upright P wave in
lead II (indicating sinus origin).
Q2. What is the normal duration of the PR interval?
A) 0.04–0.10 sec
B) 0.12–0.20 sec (3–5 small boxes)
C) 0.20–0.30 sec
D) 0.35–0.44 sec
✅ Answer: B – 0.12–0.20 sec (3–5 small boxes)
Rationale: The PR interval measures from the start of the P wave
to the start of the QRS complex. Prolongation (>0.20 sec)
indicates first-degree AV block.
Q3. The QRS duration in normal sinus rhythm should be less
than:
A) 0.06 sec
B) 0.10 sec
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C) 0.12 sec
D) 0.20 sec
✅ Answer: C – 0.12 sec (3 small boxes)
Rationale: A narrow QRS (<0.12 sec) indicates supraventricular
origin (sinus, atrial, or junctional). Wide QRS (≥0.12 sec)
suggests ventricular origin or bundle branch block.
Q4. Sinus bradycardia is defined as a sinus rhythm with a
rate less than:
A) 40 bpm
B) 50 bpm
C) 60 bpm
D) 70 bpm
✅ Answer: C – 60 bpm
Rationale: Sinus bradycardia is a sinus rhythm (P wave before
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each QRS) with a rate below 60 bpm. It can be normal in
athletes or during sleep.
Q5. Sinus tachycardia is defined as a sinus rhythm with a rate
greater than:
A) 80 bpm
B) 90 bpm
C) 100 bpm
D) 120 bpm
✅ Answer: C – 100 bpm
Rationale: Sinus tachycardia is a sinus rhythm with a rate >100
bpm, typically caused by fever, pain, exercise, anxiety, or
hyperthyroidism.
Q6. In sinus arrhythmia, the R-R interval varies by more than:
A) 0.04 sec
B) 0.08 sec
