Anesthetics fall into two main categories based on whether they are delivered by inhalation, such as isoflurane, or intravenously, such as propofol.

• 根据施用方式，麻醉药可分成吸入式及注射式两大类，前者包括异氟醚（isoflurane），后者则包括丙泊酚（propofol）。