PLAB Question 1

A patient experiences serious signs and symptoms secondary to a bradycardia, and his 12-lead ECG shows no signs of an acute MI.

What is the treatment of choice?

a) Atropine
b) bretylium
c) Calcium gluconate
d) Dopamine infusion
e) Epinephrine IV infusion
f) transcutaneous cardiac pacing
g) norepinephrine
h) amiodarone intravenously
i) Lidocaine IV infusion
j) Sodium bicarbonate


ANSWER
The correct answer is A


Explanation

When a patient is experiencing serious signs and symptoms secondary to his bradycardia, and his 12-lead ECG shows no signs of an acute MI, atropine is the initial drug of choice.

Classified as a parasympatholytic or anticholinergic, atropine can restore normal SA nodal automaticity (increasing sinus node rate) and AV nodal conductivity through its direct vagolytic action. It's the initial drug of choice to treat symptomatic bradycardia in patients with a pulse.

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