What is important to consider when evaluating the dose of lithium to be administered?
Correct Answer: A
Rationale: The correct answer is A because lithium has a narrow therapeutic index, meaning the difference between a therapeutic dose and a toxic dose is small. Therefore, it is crucial to carefully consider the dose to avoid subtherapeutic effects or toxicity. Option B is incorrect because it only focuses on the toxicity aspect of lithium, ignoring the importance of therapeutic effects. Option C, Divalproex, is irrelevant to the dosing of lithium. Option D, Tachycardia, is also irrelevant to lithium dosing considerations. It is essential to prioritize the therapeutic index when evaluating the dose of lithium for safe and effective treatment.