GPT on Question 16, Sep 30

Naloxone (Narcan) is an opioid antagonist. It rapidly binds to opioid receptors—especially mu receptors—and displaces opioids such as heroin, fentanyl, oxycodone, or methadone. This can restore the brain’s drive to breathe within a few minutes. It does not reverse overdoses caused only by alcohol, benzodiazepines, or stimulants, but it is generally safe if opioids are not involved.

When a bystander should use it

Give naloxone if an opioid overdose is possible and the person:

• •Cannot be awakened or is extremely difficult to wake
• •Is breathing very slowly, irregularly, or not at all
• •Has pinpoint pupils, blue/gray lips or nails, gurgling/snoring sounds, or a limp body

If uncertain, give it—do not wait for certainty.

What to do

• 1.Call emergency services immediately.
• 2.Give naloxone according to the device instructions—commonly one nasal spray into one nostril.
• 3.Start rescue breathing or CPR if needed, and use an AED if available.
• 4.If there is no response after 2–3 minutes, give another dose; potent opioids such as fentanyl may require multiple doses.
• 5.Once breathing resumes, place the person on their side and stay with them.

Naloxone may wear off before the opioid does, so breathing can stop again. Emergency medical evaluation is still essential. It may also cause sudden withdrawal—agitation, vomiting, sweating, or pain—but this is usually less dangerous than untreated overdose.