RELIAS DYSRHYTHMIA BASIC TEST 35 QUESTIONS AND
ANSWERS 2026/2027 (BASIC A DYSRHYTHMIA)
Original Basic Dysrhythmia Practice Exam (Questions 1–50)
Multiple-Choice Questions
1. Which structure normally initiates the electrical impulse in the heart?
• A. AV node
• B. SA node
• C. Bundle of His
• D. Purkinje fibers
2. The normal resting heart rate for an adult is:
• A. 40–60 bpm
• B. 60–100 bpm
• C. 100–140 bpm
• D. 120–160 bpm
3. Which ECG wave represents atrial depolarization?
• A. P wave
• B. QRS complex
• C. T wave
• D. U wave
4. Which ECG component represents ventricular depolarization?
• A. P wave
• B. PR interval
• C. QRS complex
• D. QT interval
5. A normal PR interval measures:
, • A. 0.04–0.08 sec
• B. 0.12–0.20 sec
• C. 0.22–0.30 sec
• D. 0.30–0.40 sec
6. Which rhythm is characterized by a regular rhythm, upright P waves before every QRS, and a
rate of 60–100 bpm?
• A. Sinus tachycardia
• B. Normal sinus rhythm
• C. Junctional rhythm
• D. Atrial fibrillation
7. Sinus bradycardia is defined as a heart rate:
• A. Less than 60 bpm
• B. Less than 50 bpm
• C. Greater than 100 bpm
• D. Greater than 120 bpm
8. Which rhythm is commonly associated with an irregularly irregular rhythm?
• A. Atrial fibrillation
• B. Atrial flutter
• C. Sinus rhythm
• D. Ventricular tachycardia
9. Which electrolyte abnormality commonly contributes to ventricular dysrhythmias?
• A. Hypercalcemia
• B. Hypokalemia
• C. Hypernatremia
• D. Hypermagnesemia
10. The AV node normally delays conduction to:
• A. Increase heart rate
ANSWERS 2026/2027 (BASIC A DYSRHYTHMIA)
Original Basic Dysrhythmia Practice Exam (Questions 1–50)
Multiple-Choice Questions
1. Which structure normally initiates the electrical impulse in the heart?
• A. AV node
• B. SA node
• C. Bundle of His
• D. Purkinje fibers
2. The normal resting heart rate for an adult is:
• A. 40–60 bpm
• B. 60–100 bpm
• C. 100–140 bpm
• D. 120–160 bpm
3. Which ECG wave represents atrial depolarization?
• A. P wave
• B. QRS complex
• C. T wave
• D. U wave
4. Which ECG component represents ventricular depolarization?
• A. P wave
• B. PR interval
• C. QRS complex
• D. QT interval
5. A normal PR interval measures:
, • A. 0.04–0.08 sec
• B. 0.12–0.20 sec
• C. 0.22–0.30 sec
• D. 0.30–0.40 sec
6. Which rhythm is characterized by a regular rhythm, upright P waves before every QRS, and a
rate of 60–100 bpm?
• A. Sinus tachycardia
• B. Normal sinus rhythm
• C. Junctional rhythm
• D. Atrial fibrillation
7. Sinus bradycardia is defined as a heart rate:
• A. Less than 60 bpm
• B. Less than 50 bpm
• C. Greater than 100 bpm
• D. Greater than 120 bpm
8. Which rhythm is commonly associated with an irregularly irregular rhythm?
• A. Atrial fibrillation
• B. Atrial flutter
• C. Sinus rhythm
• D. Ventricular tachycardia
9. Which electrolyte abnormality commonly contributes to ventricular dysrhythmias?
• A. Hypercalcemia
• B. Hypokalemia
• C. Hypernatremia
• D. Hypermagnesemia
10. The AV node normally delays conduction to:
• A. Increase heart rate
