What is the fentanyl infusion rate?

What is the fentanyl infusion rate?

• A. 0.001-0.005 mcg/kg/min
• B. 0.1-0.5 mcg/kg/min
• C. 0.5-1 mcg/kg/min
• D. 0.01-0.05 mcg/kg/min

Answer: (D)

Infusion rate expressed as micrograms per kilogram per minute is how we fine‑tune fentanyl’s analgesic effect during anesthesia. The commonly used intraoperative maintenance range is 0.01–0.05 mcg/kg/min, which translates to about 0.6–3 mcg/kg/hr. This level provides effective analgesia while keeping the risk of respiratory depression and excessive sedation reasonable, especially when titrated to the patient’s response and surgical stimuli. Rates that are much lower would likely be subtherapeutic for analgesia during surgery, while rates that are much higher raise the risk of oversedation and respiratory compromise. Hence, 0.01–0.05 mcg/kg/min is the appropriate infusion range.

Infusion rate expressed as micrograms per kilogram per minute is how we fine‑tune fentanyl’s analgesic effect during anesthesia. The commonly used intraoperative maintenance range is 0.01–0.05 mcg/kg/min, which translates to about 0.6–3 mcg/kg/hr. This level provides effective analgesia while keeping the risk of respiratory depression and excessive sedation reasonable, especially when titrated to the patient’s response and surgical stimuli.

Rates that are much lower would likely be subtherapeutic for analgesia during surgery, while rates that are much higher raise the risk of oversedation and respiratory compromise. Hence, 0.01–0.05 mcg/kg/min is the appropriate infusion range.