Evaluation of effects of an endoscopic bite block on mask ventilation. In the present study, expiratory tidal volume and minute ventilation are measured under same pressure controlled mode in ventilator with three kinds of holding a mask. ( by one hand, one hand with an endoscopic bite block and two hand hold.)
Evaluation of effects of an endoscopic bite block on mask ventilation. In the present study, expiratory tidal volume and minute ventilation are measured under the same pressure controlled mode in ventilator (Pressure 15cmH2O, Respiratory rate 15/min, I:E=1:1) with three kinds of holding a mask. ( by one hand, one hand with an endoscopic bite block and two hand hold.)
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
SUPPORTIVE_CARE
Masking
DOUBLE
Enrollment
59
mask ventilation (one-handed ventilation, one-handed with an endoscopic bite block, and two-handed ventilation)
Seoul Metropolitan Government Seoul National University Boramae Medical Center
Seoul, South Korea
Expiratory tidal volume
Expiratory tidal volume with one-hand mask ventilation, one-handed mask ventilation with an endoscopic bite block, and two-handed ventilation
Time frame: during mask ventilation after anesthesia induction
Minute ventilation
Minute ventilationwith one-hand mask ventilation, one-handed mask ventilation with an endoscopic bite block, and two-handed ventilation
Time frame: during mask ventilation after anesthesia induction
Incidence of inadequate ventilation or dead space ventilation
Inadequate mask ventilation and dead-space ventilation are defined as a mean expiratory tidal volume of less than 4 mL kg-1 of predicted body weight and a mean expiratory tidal volume of less than 150 mL per breath with no clinical signs, respectively.
Time frame: during mask ventilation after anesthesia induction
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