# A client has used oxymetazoline nasal spray every 4 hours for 2 weeks and now reports worse congestion than before starting. Which is the nurse's most appropriate explanation?

> source: MyMerci (mymerci.kr)  
> url: https://mymerci.kr/pages/nclex_q.php?qn_id=391792&lang=en  
> language: en  
> subject: Medical Emergencies  
> category: PA

## Question

A client has used oxymetazoline nasal spray every 4 hours for 2 weeks and now reports worse congestion than before starting. Which is the nurse's most appropriate explanation?

## Option

1. "The congestion has worsened because your cold is reaching its peak; it is safe to use the oxymetazoline spray every 2 hours for a few days until the symptoms naturally resolve."
2. "Switching to a longer-acting topical decongestant, such as xylometazoline, can control symptoms with less frequent use and less risk of rebound congestion over time."
3. "The rebound congestion suggests a bacterial sinus infection; a course of antibiotics will resolve the underlying inflammation and clear your nasal passages."
4. "You have developed rhinitis medicamentosa (rebound congestion). Stop the spray and use saline irrigation or intranasal corticosteroid; symptoms should resolve over 1-2 weeks." **✔ Correct answer**

**Correct answer: 4**

## Explanation

Correct (2): Topical decongestants (oxymetazoline, phenylephrine nasal) used more than 3-5 days cause rhinitis medicamentosa — rebound nasal congestion from receptor downregulation. Treatment: discontinue the spray (cold turkey or one-nostril taper), use saline irrigation and intranasal corticosteroid; resolves over 1-2 weeks. (1) Worsens cycle. (3) Continues cycle. (4) No infection indicated.

## In-depth explanation

Memory Tip Topical nasal decongestant = "3-5 days max" rule. Beyond → rhinitis medicamentosa. Oral pseudoephedrine has no rebound but has systemic side effects.

## Clinical scenario

Scenario 38-year-old male used oxymetazoline nasal spray q4h × 2 weeks for cold congestion. Now worsening congestion despite continued use, more frequent need.

## Key concepts

- **Rhinitis medicamentosa** — Rebound nasal congestion from prolonged topical decongestant use; treated with discontinuation and intranasal steroid.
- **Topical decongestant** — Oxymetazoline, phenylephrine nasal — short-term use only (≤3-5 days).
- **Intranasal corticosteroid** — Fluticasone, mometasone, budesonide — first-line for chronic allergic rhinitis and rebound congestion recovery.

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