The Effect of Paratracheal Pressure on the Glottic View

The Effect of Paratracheal Pressure on the Glottic View During Direct Laryngoscopy : a Randomized Controlled Trial

Paratracheal pressure may have a role in the prevention of pulmonary aspiration. The effects of paratracheal pressure on glottic view, ease of facemask ventilation, or tracheal intubation are not studied yet. In this study, the subjects are divided into two groups (group I: paratracheal pressure applied during induction of anesthesia, group II: conventional Sellick's maneuver applied during induction of anesthesia). Investigators will assess the glottic view during direct laryngoscopy.

Primary outcome:

-Cormack-Lehane grade

Secondary outcome:

• POGO score before and after application of each intervention
• Difficulties of mask ventilation after application of each intervention
• Inspiratory pressure and tidal volume during manual mask ventilation
• Rates of worsening of the glottic view after intervention
• The difficulty of endotracheal intubation
• Intubation time

Inclusion Criteria:

Adult patient undergoing elective surgery with general anesthesia

Exclusion Criteria:

A patient who does not agree to participate in this study A patient who has a history of cervical/esophageal operation A patient who has a risk of gastric regurgitation A patient who has atherosclerosis of the left carotid artery or history of stroke or angina in 3 months.