The Necessity of Routine Mask Ventilation in Adults
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About
The mask ventilation is a necessary procedure to provide oxygenation before the tracheal intubation although the gastric insufflation occurs during the mask ventilation. Sugammadex, which is recently introduced, enables the use of high-dose muscle relaxant without concerning the delayed recovery of neuromuscular blockade. It seems that there is no need to perform the mask ventilation in adults with normal airway if the investigators use high-dose muscle relaxant for the anesthetic induction because adequate muscle relaxation can be achieved within 1-2 minutes. Therefore, the investigators hypothesized that routine mask ventilation is not needed in adult patients with normal airway. The investigators will compare the incidence of desaturation and gastric insufflation between the patients with mask ventilation and the patients without mask ventilation.
Enrollment
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Volunteers
Inclusion criteria
- adult patients of age over 20 years for scheduled surgery with more than one and a half hours under general anesthesia
Exclusion criteria
- anticipated difficult mask ventilation,
- anticipated difficult intubation,
- ASA class 3 or 4,
- preoperative saturation less than 92%.,
- saturation less than 98% after preoxygenation
- body mass index over 35 kg/m2,
- obstructive sleep apnea,
- mass in the oral cavity or in the trachea,
- pregnant woman
Trial design
Primary purpose
Allocation
Interventional model
Masking
288 participants in 2 patient groups
Trial contacts and locations
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Data sourced from clinicaltrials.gov
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