For what reason is nitrous oxide administered alongside thiopental sodium?

Nitrous oxide is administered alongside thiopental sodium primarily to increase the effectiveness of the anesthesia at lower dosages. This practice is rooted in the pharmacological principle of additive effects, where combining two agents can enhance the overall effect while potentially minimizing the dose of each drug used.

When nitrous oxide, a volatile anesthetic, is paired with thiopental sodium, an intravenous barbiturate, the combination allows for a more balanced anesthetic effect. This can lead to less risk of side effects associated with higher doses of either agent alone. By using nitrous oxide, healthcare providers aim to achieve adequate anesthesia with greater safety and efficacy, reducing the overall dosage of thiopental required and improving patient outcomes during procedures.

Ultimately, the complementary action of these two agents allows for a smoother induction and maintenance of anesthesia while managing possible adverse effects that could arise from higher doses of sedatives or anesthetics.