What is the maximum total dose of atropine for adult bradycardia?

What is the maximum total dose of atropine for adult bradycardia?

• A. 1 mg
• B. 3 mg
• C. 4 mg
• D. 6 mg

Answer: (B)

Atropine helps speed up the heart by blocking parasympathetic (vagal) influence on the SA and AV nodes, so it’s useful for symptomatic bradycardia due to high vagal tone. The standard approach is a small IV dose given now and then repeated as needed, but you won’t give more than a total of three milligrams. This limit balances the potential benefit with the risk of anticholinergic side effects and tachyarrhythmias if higher doses are used. If atropine doesn’t improve the rate, move on to pacing or consider other medications (like dopamine or epinephrine infusions) based on the patient’s perfusion and rhythm.

Atropine helps speed up the heart by blocking parasympathetic (vagal) influence on the SA and AV nodes, so it’s useful for symptomatic bradycardia due to high vagal tone. The standard approach is a small IV dose given now and then repeated as needed, but you won’t give more than a total of three milligrams. This limit balances the potential benefit with the risk of anticholinergic side effects and tachyarrhythmias if higher doses are used. If atropine doesn’t improve the rate, move on to pacing or consider other medications (like dopamine or epinephrine infusions) based on the patient’s perfusion and rhythm.