Which of the following statements regarding sinus bradycardia is correct?
A) Treatment focuses on the patient's tolerance to the bradycardia.
B) Symptomatic bradycardia is often caused by a decreased atrial rate.
C) Sinus bradycardia often requires multiple doses of atropine to correct it.
D) Sinus bradycardia is caused by decreased vagal tone in most patients.
Answer: A) Treatment focuses on the patient's tolerance to the bradycardia.
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