Inclusion Criteria:  undergoing elective nasal or paranasal sinus surgery following overnight fasting 18-70 years of age accepting to join the study American Society of Anesthesiologist (ASA) classification system I-III Body mass Index (BMI) < 30 kg/m2  Exclusion Criteria:  ASA classification higher than III Age younger than 18 years BMI>30 kg/m2 Preoperative vomiting or antiemetic medication therapy Intubation needing more than two laryngoscopy attempts Not agreeing to participate in the study Coagulation disorders Diseases or conditions affecting gastric volume or motility