Question 60

Carbamazepine has a narrow therapeutic index and requires close monitoring.

Carbamazepine is known for having a narrow therapeutic index, which means that the range between its effective dose and toxic dose is small. This necessitates close monitoring of drug levels and patient response to ensure safety and efficacy.

A) Carvedilol

Carvedilol is a non-selective beta-blocker used primarily for heart failure and hypertension. While it does require monitoring for blood pressure and heart rate, it does not possess a narrow therapeutic index like Carbamazepine, making it less critical in terms of frequent therapeutic drug monitoring.

B) Citalopram

Citalopram is an SSRI (selective serotonin reuptake inhibitor) used to treat depression and anxiety. Although it may require some monitoring for side effects, it is not classified as having a narrow therapeutic index, as its therapeutic range is broader compared to Carbamazepine.

C) Clindamycin

Clindamycin is an antibiotic used to treat various bacterial infections. It typically does not require close monitoring and does not fall under the category of medications with a narrow therapeutic index, as its dosing is more straightforward and less prone to serious adverse effects from minor deviations.

D) Carbamazepine

Carbamazepine is an anticonvulsant and mood-stabilizing drug that is recognized for its narrow therapeutic index. This characteristic necessitates careful monitoring of blood levels to prevent toxicity and ensure therapeutic effectiveness, distinguishing it from the other options provided.

Conclusion

Carbamazepine is definitively the correct answer due to its narrow therapeutic index, which requires careful monitoring to avoid adverse effects. In contrast, the other options, including Carvedilol, Citalopram, and Clindamycin, do not share this characteristic and therefore do not demand the same level of oversight in clinical practice.