Decreasing the Incidence of Hypoxia and Airway Maneuvers During GI Procedures

Abstract

Many outpatient gastrointestinal procedures are completed with propofol anesthesia. A side effect of propofol is airway obstruction and subsequent hypoxia. This study was designed to determine whether the use of a high-flow nasal cannula is associated with a decreased incidence of hypoxia or airway obstruction in patients undergoing propofol sedation in the gastrointestinal laboratory with a STOP-BANG score ≥5. High-flow nasal cannula was administered at 70 L/min on 27 patients with a STOP-BANG score ≥5 receiving monitored anesthesia care sedation for an esophagogastroduodenoscopy, endoscopic ultrasound, or colonoscopy procedure. Patients were compared to a group from a previous project without the use of high-flow nasal cannula assessing whether hypoxia, apnea, or the need for airway maneuvers occurred. The non-high-flow nasal cannula group required an airway maneuver 53.3% (n = 8) whereas the high-flow nasal cannula group required an airway maneuver 18.5% (n = 5) (p = .021). High-flow nasal cannula was associated with a reduced need for airway maneuvers in patients with a high risk of obstructive sleep apnea undergoing propofol-assisted procedures.