Which medication is commonly monitored by checking digoxin levels?

• A. Anticoagulants
• B. Diuretics
• C. Cardiac glycosides
• D. Antibiotics

Answer: (C)

Digoxin levels are specifically monitored for patients who are taking cardiac glycosides, as digoxin is a well-known example of this class of medications. Cardiac glycosides, such as digoxin, are primarily used for heart conditions, including atrial fibrillation and heart failure, to increase the force of heart contractions and regulate heart rhythm.

Monitoring digoxin levels is crucial because of its narrow therapeutic index; this means the difference between an effective dose and a toxic dose is small. High levels can lead to digoxin toxicity, which may present with symptoms such as nausea, vomiting, confusion, and cardiac arrhythmias. By regularly checking digoxin levels, healthcare professionals can ensure that patients are within a safe and effective range, preventing adverse effects and ensuring optimal therapeutic outcomes.

The other categories of medications, such as anticoagulants, diuretics, and antibiotics, do not specifically require monitoring of digoxin levels as part of their standard treatment protocols, making cardiac glycosides the correct choice in this context.