Remifentanil route of administration

Remifentanil route of administration

• A. IV
• B. IM
• C. Subcutaneous
• D. Inhalation

Answer: (A)

Remifentanil is used intravenously because it is an ultra-short-acting μ-opioid analgesic rapidly metabolized by nonspecific esterases in blood and tissues. This metabolism gives it an extremely fast onset and, crucially, a very short and controllable duration of effect that tracks with the infusion, allowing precise titration during anesthesia and rapid recovery after stopping the infusion. Other routes would lead to slower, less predictable absorption and onset (for example, IM or subcutaneous injections) or are not standard for this drug (inhalation is not a typical route for remifentanil). Intravenous administration provides the immediate, adjustable analgesia needed in the operating room.

Remifentanil is used intravenously because it is an ultra-short-acting μ-opioid analgesic rapidly metabolized by nonspecific esterases in blood and tissues. This metabolism gives it an extremely fast onset and, crucially, a very short and controllable duration of effect that tracks with the infusion, allowing precise titration during anesthesia and rapid recovery after stopping the infusion. Other routes would lead to slower, less predictable absorption and onset (for example, IM or subcutaneous injections) or are not standard for this drug (inhalation is not a typical route for remifentanil). Intravenous administration provides the immediate, adjustable analgesia needed in the operating room.