The practical nurse (PN) is administering the 0900 medications to a client who was admitted during the night. Which client statement indicates that the PN should further assess the prescription?

Choice A reason: Serum lithium levels indicate compliance but do not directly explain the need for frequent monitoring. Lithium’s therapeutic effect stabilizes mood, but monitoring is primarily due to its narrow therapeutic index, where small changes in blood levels can cause toxicity, not just behavioral changes or compliance.

Choice B reason: Sodium levels affect lithium excretion, as both compete for renal reabsorption. Low sodium increases lithium retention, risking toxicity, while high sodium increases excretion, reducing efficacy. Lithium’s narrow therapeutic range (0.6–1.2 mEq/L) necessitates frequent monitoring to prevent toxic levels, which can cause neurological or cardiac issues.

Choice C reason: Myelosuppression and agranulocytosis are not common lithium side effects. Lithium may cause mild leukocytosis, not suppression. Toxicity risks, like neurological or renal effects, drive monitoring needs, not hematologic issues. This choice is incorrect, as it misrepresents lithium’s side effect profile.

Choice D reason: Tyramine, relevant to monoamine oxidase inhibitors, does not influence lithium metabolism. Lithium’s pharmacokinetics are affected by sodium and renal function, not dietary tyramine. This choice is incorrect, as it falsely links a dietary factor to lithium’s monitoring requirements.

Choice A reason: Conferring with the charge nurse is unnecessary, as a blood pressure of 120/72 mm Hg is within normal range for a client on maintenance antihypertensive therapy. Maintenance doses prevent hypertension recurrence, and this reading does not indicate a need to alter the schedule.

Choice B reason: Advising the client to report rising blood pressure symptoms is general education, not an action addressing the current situation. The blood pressure is normal, and the maintenance dose is indicated to sustain control, making this choice irrelevant for immediate action.

Choice C reason: Withholding the medication and rechecking in an hour risks blood pressure spikes, as maintenance therapy prevents hypertension. A normal reading of 120/72 mm Hg indicates effective control, and stopping the dose could destabilize the client’s condition, making this choice inappropriate.

Choice D reason: Administering the scheduled antihypertensive dose is correct, as 120/72 mm Hg indicates effective blood pressure control. Maintenance therapy sustains normotension by regulating vascular tone or fluid balance, preventing hypertensive episodes, ensuring cardiovascular stability, and aligning with the prescription’s intent.