A 78-year-old client weighing 72 kg has a culture-supported complicated intra-abdominal infection, creatinine clearance of 39 mL/min, a new meropenem 1 g IV every-8-hours order, and chronic divalproex therapy for a seizure disorder. Which actions should the nurse include in the pre-dose safety plan? Select exactly 4 responses.
Select All That Apply
Choose your responses, then check the answer.
Explanation
Hold the first meropenem dose, communicate the calculated creatinine clearance and full medication profile to the prescriber and pharmacist, consider an active non-carbapenem alternative, and establish an authorized seizure-protection plan if meropenem is unavoidable. Giving the first dose before clarification still exposes a client with reduced renal clearance to the unverified every-8-hour regimen. A therapeutic baseline valproate level does not exclude the interaction because meropenem can rapidly lower valproate exposure after treatment begins.
Quick answer Select holding, explicit renal communication, an alternative-antibiotic review, and a monitored seizure-protection plan.
Why this is correct The label calls for renal adjustment at creatinine clearance 50 mL/min or less and generally advises against concomitant valproate. Increasing valproate may not overcome the interaction, so independent dose escalation is unsafe.
Easy analogy or mental picture Fix the route and the guardrail; do not press harder on a control that the interaction disables.
Memory hook Calculate, clarify, substitute when possible, and monitor if unavoidable.
NCLEX decision rule Generate a solution set that treats the infection without accepting preventable accumulation or loss of seizure control.
Why the other choices are wrong Serum creatinine alone is not the dosing variable, and an unprescribed divalproex increase does not reliably overcome the interaction.
References
1DailyMed: Meropenem for InjectionCockcroft-Gault renal schedule, seizure potential, and valproate interaction
2Valproate Interaction With Carbapenems: Review and RecommendationsPeer-reviewed synthesis of subtherapeutic valproate and breakthrough seizure risk
Renal and seizure-risk solution setPrevent first-dose exposure while the renal interval, antimicrobial alternative, and seizure-protection plan are resolved through the authorized team.