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1. In a patient with bradycardia, what is the most common underlying
rhythm on the ECG?
A) Sinus tachycardia
B) Sinus bradycardia
C) Atrial fibrillation
D) Ventricular tachycardia
Answer: B) Sinus bradycardia
Rationale: Sinus bradycardia is the most common underlying rhythm in
patients with bradycardia.
2. What is considered a normal heart rate range in adults?
A) 30-60 bpm
B) 60-100 bpm
C) 100-150 bpm
D) 150-200 bpm
Answer: B) 60-100 bpm
Rationale: A heart rate of 60-100 bpm is considered normal in adults.
3. Which of the following can cause bradycardia?
A) Fever
B) Hypotension
C) Hypokalemia
D) Hyperventilation
Answer: C) Hypokalemia
Rationale: Hypokalemia can cause bradycardia by affecting the electrical
conduction of the heart.
4. What is the treatment of choice for symptomatic bradycardia?
A) Atropine
B) Adenosine
C) Epinephrine
D) Dopamine
Answer: A) Atropine
Rationale: Atropine is the first-line treatment for symptomatic
bradycardia.
5. Which of the following is a potential complication of untreatedÂÂ
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