Overview
Preoperative preoxygenation is performed using High-flow nasal oxygen therapy, and the gastric volume before and after High-flow nasal oxygen therapy is measured by ultrasound and compared in obese patients undergoing surgery under general anesthesia.
Description
Preoperative preoxygenation is performed using High-flow nasal oxygen therapy, and the gastric volume before and after High-flow nasal oxygen therapy is measured by ultrasound and compared in obese patients undergoing surgery under general anesthesia.
Eligibility
Inclusion Criteria:
- Adult patients with a BMI of 30 kg/m2 or more, undergoing surgery under general anesthesia
Exclusion Criteria:
- Nasotracheal intubation
- History of a surgery or anatomical anomaly in the head and neck
- History of Inability to breathe through nose
- History of difficult airway
- Severe cardiac or respiratory disease
- Gastric reflux disease, diabetes, pregnancy
- Previous gastric surgery