Naloxone lasts 1-2 hours; what does this imply for dosing?

Naloxone lasts 1-2 hours; what does this imply for dosing?

• A. Prepare to repeat dosing as needed
• B. Administer a single fixed dose
• C. Do not repeat dosing
• D. Discontinue after first sign of improvement

Answer: (A)

The key idea is that naloxone’s effects don’t last as long as many opioids, so the reversal can wear off and respiratory depression can recur as the drug wears off. Because its action is only about 1–2 hours, you must be prepared to repeat dosing to maintain reversal and monitor closely for any return of symptoms. In practice, give additional boluses as needed and consider a continuous infusion if long-acting opioids are involved, while continuously assessing airway, breathing, and mental status. A single fixed dose or stopping after the first improvement wouldn’t reliably sustain reversal.

The key idea is that naloxone’s effects don’t last as long as many opioids, so the reversal can wear off and respiratory depression can recur as the drug wears off. Because its action is only about 1–2 hours, you must be prepared to repeat dosing to maintain reversal and monitor closely for any return of symptoms. In practice, give additional boluses as needed and consider a continuous infusion if long-acting opioids are involved, while continuously assessing airway, breathing, and mental status. A single fixed dose or stopping after the first improvement wouldn’t reliably sustain reversal.