The administration of two or more agents in equal volume

Administration of multiple drugs concurrently in smaller quantities than would be required if each were given alone

General anesthesia in which the patient’s physiologic status remains stable

The administration of a local and general anesthetic concurrently

Hypnosis

Narcosis

Anesthesia

Tranquilization

5 mL

4.4 mL

4.8 mL

0.5 mL

Loss of sensation in a limited area of the body produced by administration of a local anesthetic or other agent in proximity to sensory nerves.

Loss of sensation in a small area of the body produced by administration of a local anesthetic in proximity to the area of interest.

Loss of sensation of a localized area produced by administration of a local anesthetic directly to a body surface or to a surgical or traumatic wound.

A drug-induced sleeplike state that impairs the ability of the patient to respond appropriately to stimuli.

Sedation

Narcosis

General anesthesia

Hypnosis

Anesthetic agents have wide therapeutic indices.

There is always a risk to patient safety when anesthetics are administered

Most anesthetics cause significant changes in cardiopulmonary function.

Administration of anesthetics is routine and thus requires no specialized skills.