Remifentanil induces analgesia as well as respiratory depression in a dose-dependent manner, and the analgesic effect exhibits as ceiling style.

• 瑞芬太尼对麻醉和呼吸抑制的诱导呈剂量依赖性关系，且以麻醉效应为其剂-效关系的平台期（顶线期）。