What type of anesthetic agents are barbiturates classified as?

Barbiturates are classified as low-cost, rapid-induction agents because they have a quick onset of action and provide anesthesia relatively rapidly after administration. These agents are often used for induction purposes in both human and veterinary medicine due to their effectiveness in rapidly inducing unconsciousness. They are particularly advantageous in surgical settings where a swift transition to anesthesia is necessary.

Their low cost makes them accessible for a variety of clinical settings, which contributes to their popularity. However, it's important to consider that while they are effective for induction, the duration of action can vary depending on the specific barbiturate used, and they may not always be suitable for maintenance anesthesia. Overall, their classification highlights their primary use in quickly achieving the desired anesthetic state.