The Comparison of the Success Rate of the Endotracheal Intubation Between the Stylet and the Frova With Acute Angled Videolaryngoscope

The Comparison of the Success Rate of the Endotracheal Intubation Between the Stylet and the Frova With Acute Angled Videolaryngoscope

The purpose of this study is to compare the effect of frova and stylet on the success rate of tracheal intubation when using a video laryngoscope.

Inclusion Criteria:

• 1. adult patients aged over 19 years who are undergoing endotracheal intubation for elective surgery.
• 2. Patients who have one of the predictors of difficult intubation such as Mallampati classification 3 or 4, limited the movement of the neck, body mass index less than 35 kg/m2, a distance from the tip of the chin to the thyroid cartilage of less than 6.5 cm, a interincisor distance less than 3.5 cm, inability to protrude of lower incisors over the upper incisors, or a diagnosis of obstructive sleep apnea.

Exclusion Criteria:

• 1. Patients receiving emergency surgery
• 2. Pregnant women
• 3. Patients scheduled for oral surgery such as tonsillectomy, vocal cord surgery
• 4. Patients who have a history of ankylosing spondylitis or have a large tumor of 4 cm or more on the tongue and need an awake intubation
• 5. Patients who are at risk of vomiting due to not fasting time