# A postpartum client who is actively breastfeeding is scheduled for therapeutic sodium iodide I 131. Which action is the priority?

> source: MyMerci (mymerci.kr)  
> url: https://mymerci.kr/pages/nclex_q.php?qn_id=522080&lang=en  
> language: en  
> subject: Adverse Effects/Contraindications/Interactions  
> category: PPT

## Question

A postpartum client who is actively breastfeeding is scheduled for therapeutic sodium iodide I 131. Which action is the priority?

## Option

1. Stop and clarify I 131 because lactation is contraindicated and a feeding plan is required. **✔ Correct answer**
2. Proceed after one feeding and discard expressed milk only until the next routine clinic visit.
3. Administer the dose immediately after breastfeeding to limit radioiodine exposure to the infant.
4. Place radiation shielding around the breast pump and continue the usual feeding schedule.

**Correct answer: 1**

## Explanation

Therapeutic sodium iodide I 131 is contraindicated during lactation; breastfeeding cessation and postpartum restrictions require advance counseling and a clear alternative feeding plan.

## In-depth explanation

Quick answer
Prevent radioiodine exposure through lactation.

Why this is correct
The label requires breastfeeding or pumping cessation before therapy and states breastfeeding must not resume for the remainder of the postpartum period after administration.

Easy analogy or mental picture
Think of medication safety as a control panel: identify the dangerous signal, change the correct control, and verify the response.

Memory hook
Cue, action, response, reassessment.

NCLEX decision rule
Choose the action that prevents the most immediate medication-related harm while preserving the continuing indication.

Why the other choices are wrong
Options that delay escalation, ignore a contraindication, or change therapy without authorization do not close the safety loop.References
1DailyMed: Sodium Iodide I 131Contraindication during lactation, pre-treatment cessation, and postpartum breastfeeding restrictions

## Clinical scenario

Medication safety review
Verify the indication, current assessment, laboratory trend, timing, interactions, authorized action, and measurable follow-up.

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