# 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.

> source: MyMerci (mymerci.kr)  
> url: https://mymerci.kr/pages/nclex_q.php?qn_id=602987&lang=en  
> language: en  
> subject: Adverse Effects/Contraindications/Interactions  
> category: PPT

## Question

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 exactly 4 responses.

1

Administer the prescribed first dose now, then request interval clarification before the second dose because infection treatment is time-sensitive.

2

Obtain a baseline valproate level and proceed if it is therapeutic because that result excludes a clinically important interaction.

3

Hold the meropenem dose until the order is clarified.

4

Ask whether a non-carbapenem susceptible option can be used.

5

Continue the prescribed antiseizure therapy and request a documented supplemental-anticonvulsant and neurologic monitoring plan if meropenem is unavoidable.

6

Communicate the calculated creatinine clearance and current regimen to the prescriber and pharmacist.

## 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.

## In-depth explanation

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

## Clinical scenario

Renal and seizure-risk solution set
Prevent first-dose exposure while the renal interval, antimicrobial alternative, and seizure-protection plan are resolved through the authorized team.

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