RELIAS DYSRHYTHMIA BASIC TEST 100
QUESTIONS AND ANSWERS 2026/2027
(BASIC A DYSRHYTHMIA)
SECTION 1: SINUS RHYTHMS (Questions 1-15)
1. What is the rate range for a normal sinus rhythm (NSR)?
A. 40–60 bpm
B. 60–100 bpm
C. 100–150 bpm
D. 30–50 bpm
Correct Answer: B
Rationale: Normal sinus rhythm originates in the SA node at 60-100 beats per minute in
adults .
2. Which of the following best describes the rhythm of normal sinus rhythm?
A. Irregularly irregular
B. Regularly irregular
C. Regular
D. Chaotic
Correct Answer: C
Rationale: NSR is characterized by a regular rhythm with consistent R-R intervals.
3. What is the hallmark characteristic of sinus bradycardia?
A. Rate < 60 bpm
B. Rate > 100 bpm
C. Irregular rhythm
D. Absent P waves
Correct Answer: A
Rationale: Sinus bradycardia is defined by a rate below 60 bpm with normal P waves
preceding each QRS.
,4. What is the rate range for sinus tachycardia?
A. 40–60 bpm
B. 60–100 bpm
C. 100–160 bpm
D. > 200 bpm
Correct Answer: C
Rationale: Sinus tachycardia is defined by a rate of 101-160 bpm with normal
conduction pathway activation .
5. What is the distinguishing feature of sinus arrhythmia?
A. Rate < 60 bpm
B. Irregular rhythm that varies with respiration
C. Absent P waves
D. Wide QRS complexes
Correct Answer: B
Rationale: Sinus arrhythmia presents with an irregular rhythm where the heart rate
varies with the respiratory cycle.
6. A patient presents with a heart rate of 48 bpm, regular rhythm, normal P waves,
and normal QRS. What is the rhythm?
A. Normal sinus rhythm
B. Sinus bradycardia
C. Sinus tachycardia
D. Junctional rhythm
Correct Answer: B
Rationale: Sinus bradycardia is defined as SA node firing at less than 60 bpm.
7. What is the appropriate treatment for a symptomatic patient with sinus
bradycardia?
A. Defibrillation
B. Atropine
C. Amiodarone
D. Adenosine
, Correct Answer: B
Rationale: Atropine is the first-line medication for symptomatic bradycardia to increase
heart rate.
8. Which of the following is NOT a characteristic of normal sinus rhythm?
A. P wave before each QRS
B. PR interval 0.12-0.20 seconds
C. QRS duration > 0.12 seconds
D. Rate 60-100 bpm
Correct Answer: C
Rationale: Normal QRS duration is < 0.12 seconds; a widened QRS indicates ventricular
conduction delay.
9. How many "small boxes" are in one second on standard ECG paper?
A. 5
B. 10
C. 15
D. 25
Correct Answer: D
Rationale: ECG paper runs at 25 mm/sec; each small box is 0.04 seconds, so 25 small
boxes equal 1 second.
10. What is the duration of one "big box" on standard ECG paper?
A. 0.04 seconds
B. 0.12 seconds
C. 0.20 seconds
D. 0.40 seconds
Correct Answer: C
Rationale: One large box (5 small boxes) equals 0.20 seconds .
11. Which of the following represents normal PR interval duration?
A. < 0.08 seconds
B. 0.08-0.11 seconds
C. 0.12-0.20 seconds
D. > 0.20 seconds
QUESTIONS AND ANSWERS 2026/2027
(BASIC A DYSRHYTHMIA)
SECTION 1: SINUS RHYTHMS (Questions 1-15)
1. What is the rate range for a normal sinus rhythm (NSR)?
A. 40–60 bpm
B. 60–100 bpm
C. 100–150 bpm
D. 30–50 bpm
Correct Answer: B
Rationale: Normal sinus rhythm originates in the SA node at 60-100 beats per minute in
adults .
2. Which of the following best describes the rhythm of normal sinus rhythm?
A. Irregularly irregular
B. Regularly irregular
C. Regular
D. Chaotic
Correct Answer: C
Rationale: NSR is characterized by a regular rhythm with consistent R-R intervals.
3. What is the hallmark characteristic of sinus bradycardia?
A. Rate < 60 bpm
B. Rate > 100 bpm
C. Irregular rhythm
D. Absent P waves
Correct Answer: A
Rationale: Sinus bradycardia is defined by a rate below 60 bpm with normal P waves
preceding each QRS.
,4. What is the rate range for sinus tachycardia?
A. 40–60 bpm
B. 60–100 bpm
C. 100–160 bpm
D. > 200 bpm
Correct Answer: C
Rationale: Sinus tachycardia is defined by a rate of 101-160 bpm with normal
conduction pathway activation .
5. What is the distinguishing feature of sinus arrhythmia?
A. Rate < 60 bpm
B. Irregular rhythm that varies with respiration
C. Absent P waves
D. Wide QRS complexes
Correct Answer: B
Rationale: Sinus arrhythmia presents with an irregular rhythm where the heart rate
varies with the respiratory cycle.
6. A patient presents with a heart rate of 48 bpm, regular rhythm, normal P waves,
and normal QRS. What is the rhythm?
A. Normal sinus rhythm
B. Sinus bradycardia
C. Sinus tachycardia
D. Junctional rhythm
Correct Answer: B
Rationale: Sinus bradycardia is defined as SA node firing at less than 60 bpm.
7. What is the appropriate treatment for a symptomatic patient with sinus
bradycardia?
A. Defibrillation
B. Atropine
C. Amiodarone
D. Adenosine
, Correct Answer: B
Rationale: Atropine is the first-line medication for symptomatic bradycardia to increase
heart rate.
8. Which of the following is NOT a characteristic of normal sinus rhythm?
A. P wave before each QRS
B. PR interval 0.12-0.20 seconds
C. QRS duration > 0.12 seconds
D. Rate 60-100 bpm
Correct Answer: C
Rationale: Normal QRS duration is < 0.12 seconds; a widened QRS indicates ventricular
conduction delay.
9. How many "small boxes" are in one second on standard ECG paper?
A. 5
B. 10
C. 15
D. 25
Correct Answer: D
Rationale: ECG paper runs at 25 mm/sec; each small box is 0.04 seconds, so 25 small
boxes equal 1 second.
10. What is the duration of one "big box" on standard ECG paper?
A. 0.04 seconds
B. 0.12 seconds
C. 0.20 seconds
D. 0.40 seconds
Correct Answer: C
Rationale: One large box (5 small boxes) equals 0.20 seconds .
11. Which of the following represents normal PR interval duration?
A. < 0.08 seconds
B. 0.08-0.11 seconds
C. 0.12-0.20 seconds
D. > 0.20 seconds
