[Induction of anesthesia in ambulatory surgery in children].

The studies were carried out in 163 children aged 3-16 years operated in a one-day hospital. The patients were divided into 3 groups administered different types of induction anesthesia: 1) ethrane inhalation up to 3 vol% and N2O with O2 in 1:1 ratio (56 children); 2) fluothane up to 3.5 vol% and N2O with O2 in 2:1 ratio (87 children); and 3) intravenous calipsol in a dose of 2-4 mg/kg (20 children). Central hemodynamic parameters, cardiointervalograms, and external respiration function were analyzed. Induction with ethrane was longer (4-12 min) than with fluothane (3-5 min). The reaction of central hemodynamics was less expressed after induction anesthesia with ethrane and fluothane in combination with N2O and O2 than after calipsol, leading to a decrease in the sympathetic tone and a higher activity of the parasympathetic component of the autonomic nervous system. Calipsol induction was associated with the predominance of the sympathetic component of the autonomic nervous system.