Transnasal Humidified Rapid-Insufflation Ventilatory Exchange versus Oropharyngeal Airway-Assisted Face-Mask Ventilation for Gastric Insufflation During Induction of General Anesthesia in Patients at High Risk for Obstructive Sleep Apnea.

Although THRIVE significantly reduced the incidence of comet-tail signs indicative of gastric insufflation and showed a possible trend toward reduced gastric distension, the between-group difference in CSAa change did not reach statistical significance.

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Specifically, the median percentage increase in CSAa from T 1 to T 4 was higher in the mask ventilation group (Group M: 13.24%, IQR 3.64–33.48%) than in the THRIVE group (Group T: 7.62%, IQR 2.55–18.55%; P = 0.070), although the difference in CSAa did not reach statistical significance.

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