<unk>  <unk>  refers to the<unk>  administration of anesthetic agents to induce a temporary loss of sensation or awareness. The first study of<unk>  was done in 1872 using chloral hydrate, and the common anesthetic agent propofol was licensed in 1986.<unk>  is currently employed in various procedures as an alternative technique of general anesthesia in order to improve post-operative recovery.<unk>  is maintained by<unk>  infusion devices and assisted by electroencephalography (EEG) monitoring. These techniques facilitate the use of propofol, etomidate, ketamine, and other<unk>  anesthetic agents. During or after<unk> , patients may be subjected to an elevated risk of anesthesia awareness, hyperalgesia and neurotoxicity. Considering these risks, special consideration is given to obese, elderly and pediatric patients.
Total intravenous anaesthesia
Intravenous regional anesthesia
Balanced anesthesia
Saddle anesthesia
General anaesthesia
Combined spinal and epidural anaesthesia
Local anesthesia
Neurosurgical anesthesia