A Comparison of LMA-Supreme and I-gel for the Incidence of Postoperative Sore Throat

The purpose of this study is to investigate and compare the incidence of the postoperative sore throat between LMA supreme and I-gel.

Inclusion Criteria:

- adult patients aged over 19 years who are scheduled for elective surgery under general anesthesia using the laryngeal mask airway

Exclusion Criteria:

• Anticipated difficult airway
• Expected duration of surgery more than 4 hours
• body mass index more than 35 kg/m2
• pregnancy
• Upper gastrointestinal surgery or open abdominal surgery.