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Published on: May 5, 2011
Manual vs pressure-controlled facemask ventilation during the induction of general anesthesia in children: A
Ji-Hyun Lee1, Haesun Jung1, Young-Eun Jang1
1Department of Anaesthesiology and Pain Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea.
Insights
Pressure-controlled facemask ventilation significantly reduces gastric insufflation in children compared to manual ventilation. This method offers more stable ventilation during anesthesia induction, improving patient safety.
Area of Science:
- Pediatric Anesthesiology
- Respiratory Mechanics
- Critical Care Medicine
Background:
- Gastric insufflation is a common complication during facemask ventilation in pediatric patients.
- Effective airway management is crucial during general anesthesia induction in children.
Purpose of the Study:
- To compare the incidence of gastric insufflation between pressure-controlled facemask ventilation and manual facemask ventilation.
- To evaluate ventilation stability during general anesthesia induction in children.
Main Methods:
- A comparative study involving two groups of children undergoing general anesthesia.
- Pressure-controlled facemask ventilation (inspiratory pressure 13 cm H2O) versus manual facemask ventilation (attempted 13 cm H2O).
- Assessment of gastric insufflation via epigastric auscultation and gastric ultrasonography over 90 seconds.
Main Results:
- Gastric insufflation occurred significantly less with pressure-controlled ventilation (12%) versus manual ventilation (48%).
- Mean peak airway pressure was lower and more stable in the pressure-controlled group (13.0 cm H2O) compared to the manual group (16.1 cm H2O).
- Manual ventilation showed wider variations in peak airway pressure and tidal volume.
Conclusions:
- Pressure-controlled facemask ventilation is more effective in preventing gastric insufflation than manual ventilation in children at 13 cm H2O.
- Pressure-controlled ventilation provides more stable airway pressures and tidal volumes during pediatric anesthesia induction.
- This technique may enhance patient safety by reducing a common complication.
Background:
Gastric insufflation frequently occurs during facemask ventilation in children. In the present study, we compared the incidence of gastric insufflation between pressure-controlled facemask ventilation and manual facemask ventilation during general anesthesia induction in children.
Methods:
Children in the pressure-controlled ventilation group (n = 76) received pressure-controlled facemask ventilation at an inspiratory pressure of 13 cm H2 O. In the manual ventilation group (n = 75), facemask ventilation was manually performed by anesthesiologists, who tried to maintain an inspiratory pressure of 13 cm H2 O. The adjustable pressure limiting valve was set at 13 cm H2 O. The incidence of gastric insufflation during 90 seconds after the initiation of ventilation was assessed using epigastric auscultation and gastric ultrasonography.
Results:
The incidence of gastric insufflation was significantly higher in the manual facemask ventilation group than in the pressure-controlled ventilation group (48% vs 12%, respectively; odds ratio 7.78, 95% confidence interval [CI] 3.38-17.9; P < 0.001). The mean peak airway pressure during ventilation was significantly higher in the manual ventilation group than in the pressure-controlled ventilation group (16.1 [3.0] cm H2 O vs 13.0 [0.1] cm H2 O; 95% CI of differences, 2.36-3.71 cm H2 O; P < 0.001). The manual ventilation group exhibited a wide peak airway pressure range (11-26 cm H2 O) and a wide variation of tidal volume (0-7.0 mL/kg) compared with those of the pressure-controlled ventilation group (13-14 cm H2 O and 0.6-16.0 mL/kg, respectively).
Conclusion:
At an inspiratory pressure of 13 cm H2 O, pressure-controlled ventilation may be more effective than manual ventilation in preventing gastric insufflation while providing stable ventilation in children.
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