GPT on Question 16, Oct 3

Naloxone (Narcan) rapidly blocks opioid receptors—especially μ-opioid receptors—in the brain. It displaces opioids such as heroin, fentanyl, oxycodone, or methadone, reversing their suppression of breathing and consciousness. It does not reverse overdoses from non-opioid drugs, but it is generally safe to give if you are unsure. It may trigger sudden opioid withdrawal, which is unpleasant but usually not life-threatening.

When a bystander should use it

Give naloxone immediately if someone may have used opioids and has signs such as:

• •Cannot be awakened or is unusually limp
• •Very slow, irregular, gasping, or absent breathing
• •Snoring, choking, or gurgling sounds
• •Blue/gray lips or fingertips
• •Pinpoint pupils

What to do

• 1.Call emergency services immediately.
• 2.Give naloxone—commonly one nasal spray into one nostril. Do not test or prime the device.
• 3.Provide rescue breaths or CPR and use an AED if indicated and you’re trained.
• 4.If the person does not respond in 2–3 minutes, give another dose with a new device; fentanyl overdoses may require multiple doses.
• 5.Once breathing improves, place them on their side and stay with them.

Naloxone often lasts only 30–90 minutes, which can be shorter than the opioid’s effects, so breathing can worsen again. Emergency evaluation is essential even if the person wakes up.