This study aims to evaluate the effect of paratracheal pressure on mask ventilation in anesthetized obese patients in terms of expiratory tidal volume, and peak inspiratory pressure.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
OTHER
Masking
QUADRUPLE
Enrollment
50
Mask ventilation is performed under paratracheal pressure or no pressure in a randomized, crossover manner.
Seoul Metropolitan Government Seoul National University Boramae Medical Center
Seoul, South Korea
Expiratory tidal volume
Volume controlled mechanical ventilation is delivered during mask ventilation. Expiratory tidal volumes on the monitor screen are recorded during mask ventilation
Time frame: For 2 min of mask ventilation after the induction of anesthesia
Peak inspiratory pressure
Peak inspiratory pressure on the screen is recorded during mask ventilation.
Time frame: For 2 min of mask ventilation after the induction of anesthesia
Inadequate tidal volume
Incidence of tidal volume less than 150 mL is recorded.
Time frame: For 2 min of mask ventilation after the induction of anesthesia
Incidence of hypoxia
Occurrence of hypoxia (SpO2 \<90%) is recorded.
Time frame: For 2 min of mask ventilation after the induction of anesthesia
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