Acetaminophen IV/IO dosing rule in ALS?

• A. Single dose only
• B. Up to two doses per 24 hours
• C. Every 6 hours as needed
• D. Max two doses per 12 hours

Answer: (A)

The main idea is safety through dosing limits in the prehospital ALS setting. Acetaminophen given IV/IO under standing orders is limited to a single dose per patient encounter. This keeps dosing simple and reduces the risk of hepatotoxicity when you may not have complete information about any prior dosing or future doses the patient might receive. Although acetaminophen has a daily maximum, the ALS protocol prioritizes one dose per encounter so you don’t risk exceeding safe limits before hospital records can guide any additional dosing. If symptoms persist, the appropriate next steps involve hospital evaluation or medical control authorization for further dosing. Other schedules would allow multiple doses in a short window, which isn’t aligned with the safety and practicality of field administration.