Effect of Continuous Supraglottic Oxygen Insufflation Via Video Laryngoscope Blade on Apneic Oxygenation During Tracheal Intubation Under General Anesthesia

Effect of Continuous Supraglottic Oxygen Insufflation Via Video Laryngoscope Blade on Apneic Oxygenation During Tracheal Intubation Under General Anesthesia

This study is a prospective, randomized controlled clinical trial aimed at investigating the efficacy and safety of a novel oxygenating video laryngoscope blade during apneic oxygenation for intubation under general anesthesia. Hypoxemia is prone to occur during anesthesia induction, which can lead to severe complications. Apneic oxygenation is an important method to prolong the safe apnea time, but existing oxygen delivery modalities have limitations in applicability. Although the laryngeal oxygen delivery approach combined with video laryngoscopy has theoretical advantages, clinical evidence is insufficient. Therefore, this study was conducted.

Inclusion Criteria:

• Patients aged between 18 and 75 years, with ASA physical status I to III, and scheduled for surgery with general anaesthesia and orotracheal intubation

Exclusion Criteria:

• cardiac disease (ischaemic heart disease, heart failure [NYHA ≥2 ],current arrhythmias, pulmonary hypertension)
• severe asthma, moderate to severe chronic obstructive pulmonary disease
• pregnancy
• baseline oxygen saturation <95%
• not capable of understanding study information and signing a written consent