Final answer:
In a case of sinus bradycardia, negative inotropic agents such as beta blockers and calcium channel blockers should be eliminated as they may further slow down the heart rate.
Step-by-step explanation:
Sinus bradycardia is a condition characterized by a slow heart rate, where the heart beats less than 60 times per minute. In terms of drug elimination, certain medications should be avoided if a person has sinus bradycardia as they may further slow down the heart rate. Specifically, drugs known as negative inotropic agents, such as beta blockers and calcium channel blockers, should be eliminated. Beta blockers, like propranolol and metoprolol, work by blocking beta receptors and can slow down the heart rate. Similarly, calcium channel blockers, like diltiazem and verapamil, reduce the strength of contraction of the heart muscle and can also cause bradycardia.