Gastric Insufflation During Positive Pressure Ventilation

Effect of the Peak Inspiratory Pressure and Facial Mask Holding Techniques on the Gastric Insufflation During Positive Pressure Ventilation With Facemask in Obese Adults

Effect of peak inspiratory pressure on the gastric insufflation is evaluated using ultrasonography during face mask ventilation in obese adults. Effect of facial mask holding techniques on the gastric insufflation is also evaluated.

Inclusion Criteria:

• Patients with body mass index ≥ 30 kg/m2 who are scheduled for general anesthesia

Exclusion Criteria:

• Risk of delayed gastric emptying or gastroesophageal reflux (gastroesophageal reflux disease, achalasia, history of stomach surgery, gastrointestinal obstruction, uncontrolled DM)
• Pregnancy
• Known or predicted difficult airway