Optimal Inspiratory Pressure for Facemask Pressure-controlled Ventilation in Children
Status:
Completed
Trial end date:
2015-12-01
Target enrollment:
Participant gender:
Summary
The purpose of this study is to find an optimal inspiratory pressure to provide adequate
tidal volume and prevent gastric insufflation in pediatric patients.
The children under 5 years old are randomly assigned to muscle relaxation group and
non-relaxation group. For muscle relaxation group, routine anesthesia induction is performed
with muscle relaxant and mask ventilation is started by pressure-controlled mechanical
ventilation. Gastric auscultation and abdominal ultrasonography are performed simultaneously
during mask ventilation to detect inflow of air. Initial inspiratory airway pressure is 10
cmH2O and increased gradually by 2 cmH2O until gastric insufflation is detected by either of
two methods. Tracheal intubation is done after detection of gas.
For non-relaxation group, mask ventilation is performed in a same manner, without muscle
relaxant. After detection of gas by any of the two methods, rocuronium 0.6 mg/kg is
administered and tracheal intubation is performed.