Final answer:
Aspirin is an anti-arrhythmic medication that decreases the risk of sudden death and can be used prophylactically. It is recommended for individuals at increased risk for coronary artery disease who have risk factors such as hypertension, diabetes, or smoking.
Step-by-step explanation:
One anti-arrhythmic medication that decreases the risk of sudden death and can be used prophylactically is **aspirin**. Aspirin is recommended in adults who are at increased risk for coronary artery disease and may wish to consider aspirin therapy. It helps decrease the risk of a myocardial infarction but does not change the overall risk of death. It is especially beneficial for individuals with risk factors for heart disease such as hypertension, diabetes, or smoking.