# A nurse teaches a client about applying a scopolamine transdermal patch for motion sickness. Which instruction is most important?

> source: MyMerci (mymerci.kr)  
> url: https://mymerci.kr/pages/nclex_q.php?qn_id=391811&lang=en  
> language: en  
> subject: Medical Emergencies  
> category: PA

## Question

A nurse teaches a client about applying a scopolamine transdermal patch for motion sickness. Which instruction is most important?

## Option

1. Cut the patch to titrate the dose
2. Apply two patches at once for stronger effect
3. Apply to the abdomen 1 hour before travel
4. Apply behind the ear at least 4 hours before travel; wash hands thoroughly after handling to avoid getting drug in the eyes (mydriasis) **✔ Correct answer**

**Correct answer: 4**

## Explanation

Correct (2): Scopolamine patch is applied behind the ear ≥4 hours before travel; the lipophilic drug is absorbed slowly. Wash hands after handling — touching the eye causes anisocoria and blurred vision. Lasts 72 hours. (1) Not abdomen; specific behind-ear site. (3) Cutting destroys controlled release. (4) Overdose risk.

## In-depth explanation

Memory Tip Scopolamine = "Behind the ear, hands washed, 72 hours." Anticholinergic effects: dry mouth, drowsiness, blurred vision, urinary retention.

## Clinical scenario

Scenario 28-year-old female prescribed scopolamine 1.5 mg transdermal patch for an upcoming cruise. Outpatient teaching.

## Key concepts

- **Scopolamine transdermal** — Lipophilic anticholinergic patch for motion sickness; lasts 72 hours.
- **Anisocoria** — Unequal pupils; caused by scopolamine exposure to one eye after touching the patch.
- **Anticholinergic effects** — Dry mouth, drowsiness, blurred vision, urinary retention; same precautions as glaucoma/BPH.

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