In symptomatic bradycardia, what is the maximum atropine dosing?

• A. 2 doses
• B. 4 doses
• C. 1 dose
• D. 3 doses

Answer: (D)

Atropine helps raise heart rate by blocking vagal stimulation to the heart. In symptomatic bradycardia, you give 0.5 mg IV every 3–5 minutes, with a total maximum dose of 3 mg. The idea behind the chosen answer is that you should not keep dosing atropine indefinitely; after up to three dosing opportunities (and in practice up to the total 3 mg ceiling), you should reassess and escalate to pacing or other medications if there’s no adequate response. It’s also important to know atropine isn’t effective for all bradycardias, so if the rhythm remains dangerously slow despite atropine, proceed to pacing or vasopressor support as appropriate.