Naloxone is used to treat opioid overdose.

Naloxone is used to treat opioid overdose.

• A. True
• B. False
• C. Only in neonates
• D. Not used clinically

Answer: (A)

Naloxone reverses opioid overdose by competitively blocking mu-opioid receptors, displacing opioid agonists from those receptors and restoring respiratory drive. In overdose, opioids depress brainstem centers that regulate breathing, so naloxone’s high-affinity binding rapidly reverses this effect, improving ventilation and consciousness. Because its duration can be shorter than that of many opioids, repeated doses or an infusion may be needed and careful monitoring is essential to prevent re-narcotization. It’s used across emergency, prehospital, and in-hospital settings and can be given IV, IM, subcutaneously, or intranasally. Be aware that reversing opioids can precipitate withdrawal in dependent individuals; in newborns, it can treat respiratory depression from maternal opioid exposure but requires cautious use.

Naloxone reverses opioid overdose by competitively blocking mu-opioid receptors, displacing opioid agonists from those receptors and restoring respiratory drive. In overdose, opioids depress brainstem centers that regulate breathing, so naloxone’s high-affinity binding rapidly reverses this effect, improving ventilation and consciousness. Because its duration can be shorter than that of many opioids, repeated doses or an infusion may be needed and careful monitoring is essential to prevent re-narcotization. It’s used across emergency, prehospital, and in-hospital settings and can be given IV, IM, subcutaneously, or intranasally. Be aware that reversing opioids can precipitate withdrawal in dependent individuals; in newborns, it can treat respiratory depression from maternal opioid exposure but requires cautious use.