Effect of an Endoscopic Bite Block on Mask Ventilation

Effect of an Endoscopic Bite Block on Mask Ventilation in Anesthetized and Paralyzed Patients

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.)

Inclusion Criteria:

• patients scheduled for elective surgery under general anesthesia and agree with the purpose of the study

Exclusion Criteria:

• patients with diseases or structural abnormalities in the upper airway, wobbly teeth, and limited mouth opening of less than 3.5 cm or those who were at risk of aspiration