(2) halothane. This product is a powerful inhalation anesthetic, stronger than ether, and has no irritation to respiratory tract. Nitrous oxide mixed anesthesia is needed, and atropine is injected in advance. Usage and dosage: administered by semi-closed or closed anesthesia machine, with drug concentration of 5%.
(3) chloral hydrate. Chloral hydrate is a good sedative and hypnotic drug. With the increase of dose, it can produce sedative, hypnotic and anesthetic effects. It has the advantages of fast absorption, long excitation period (1 ~ 3 hours), no accumulation and low price. Administration and dosage: oral or enema,100 mg/kg; Intravenous injection, 80 ~ 100 mg/kg.