Final answer:
Atropine is commonly the first medication given to treat bradycardia. It works by blocking the action of the vagus nerve, which increases heart rate. If ineffective, other treatments like pacemaking, dopamine, or epinephrine may be used.
Step-by-step explanation:
The initial treatment for bradycardia, which is a slower than usual heart rate, is often atropine. Atropine is the first-line medication given to increase heart rate by blocking the action of the vagus nerve on the heart, leading to an increased heart rate. If atropine is ineffective, other treatments like Transcutaneous pacing (TCP), dopamine, and epinephrine may be considered. Beta-blockers are often used as a treatment for hypertension and can lead to bradycardia as a side effect, which might require administration of atropine or other interventions.