EFFECTS OF LARYNGOSCOPY AND TRACHEAL INTUBATION ON CEREBRAL AND SYSTEMIC HEMODYNAMICS IN CHILDREN UNDER DIFFERENT PROTOCOLS OF ANESTHESIA

The effects of laryngoscopy and tracheal intubation on cerebral and sy stemic haemodynamics were studied in 30 children. The objective was to identify conditions in which the alterations of cerebral and systemic haemodynamics were minimal. The children were intubated after muscula r relaxation and following 10 min of mechanical ventilation with endti dal halothane concentrations of 1.5%, 2.0% and 2.5%, respectively. Wit h 1.5%, 2.0% and 2.5% endtidal halothane, the mean flow velocity incre ased by 26%, 19% and 5%, the mean blood pressure by 14%, 10% and 1%, a nd the heart rate by 26%, 8% and 5% respectively after intubation. Adv erse effects of laryngoscopy and tracheal intubation on cerebral haemo dynamics in children can be avoided by adequate anaesthetic protocols.