A diverse group of agents produce sedation at lower doses and hypnosis at higher doses. There is generally also a dose-related suppression of protective reflexes and automatic functions such as respiration and cardiovascular control. The drugs are usually grouped into intravenous and volatile agents. The volatile (or inhala-tional) agents are administered from a vaporizer via an anesthetic breathing circuit.
Intravenous agents include the barbiturates, propofol, benzodiazepines, etomidate and ketamine. With the exception of ketamine, all intravenous anesthetics decrease cerebral metabolism and blood flow and tend to have a cerebral protective effect and decrease intracra-
Was this article helpful?
It seems like you hear it all the time from nearly every one you know I'm SO stressed out!? Pressures abound in this world today. Those pressures cause stress and anxiety, and often we are ill-equipped to deal with those stressors that trigger anxiety and other feelings that can make us sick. Literally, sick.