[Clinical stages and subjective sensations in xenon anesthesia]

Clinical pattern of monoanesthesia with Xe:O2 (70:30) has been studied in 12 anesthesiologists volunteers in comparison with their subjective sensations. Four clinical stages of anesthesia have been identified: paresthesia and hypoalgesia, euphoria and psychomotor activity, analgesia and partial amnesia, anesthesia (analgesia and amnesia). Induction anesthesia took 5 to 6 min, anesthesia discontinuation was easy and prompt without any adverse events. In healthy men it was impossible to achieve complete amnesia with Xe:O2 (60:40). Subjective sensations from the anesthesia were pleasant. Xenone is the best alternative to N2O2.