A Comparative Study of Induction, Maintenance and Recovery Characteristics of Sevoflurane and Halothane Anaesthesia in Pediatric Patients (6 months to 6 years)

PATIENTS & METHODS: In a randomized , double blind clinical study, we studied 30 children, aged 6 months to 6 years, to compare halothane and sevoflurane anaesthesia in patients undergoing short surgical procedures under general anaesthesia. All the patients were premedicated with atropine 0.02mg kg(-1)and midazolam 0.1mg kg(-1)body weight intravenously and received inhalation induction using nitrous oxide in oxygen supplemented with either halothane (maximum inspired concentration of 5%) or sevoflurane (maximum inspired concentration of 8%). Induction was by inhalation of increasing concentrations of sevoflurane (1%) or halothane (0.5%) in the vaporizing setting after every three breaths of the patient. RESULTS: Time to loss of eyelash reflex and tracheal intubation was more rapid using sevoflurane. Cardiac arrhythmias were significantly more frequent during halothane than sevoflurane anaesthesia. Psychomotor recovery was more rapid after sevoflurane anaesthesia. Children who received sevoflurane had comparatively less nausea and vomiting and the incidence of clinically important side effects was significantly less with sevoflurane anaesthesia. CONCLUSION: We conclude that induction with sevoflurane in nitrous oxide and oxygen leads to fast loss of consciousness and provides ideal conditions for managing the airway without supplemental opioids or muscle relaxants with haemodynamic stability and is therefore a reasonable alternative to halothane for paediatric patients.