In pediatric patients, the accuracy of body temperature measured with an esophageal temperature probe placed through the gastric lumen of the supraglottic airway device is investigated.

Pediatric patients using a supraglottic airway device during general anesthesia are targeted. When the patient enters the operating room, standard monitoring is performed, general anesthesia is induced, a supraglottic airway device is installed, and an anesthesiologist inserts an esophageal thermometer through the gastric lumen. We recorded the body temperature measured in the esophagus, tympanic membrane, temporal artery, and rectum every 10 minutes from 10 minutes after insertion.

Inclusion Criteria:

• Pediatrics patients under six years old with ASA PS 1-3
• Patients undergoing general anesthesia using the Supraglottic airway device
• Patient's weight: 10-30kg

Exclusion Criteria:

• Patients who refused to participate in the study
• Patients with tumors in the esophagus or esophageal varices
• Patients with a monitoring device inserted through the esophagus during surgery
• Patients with ear inflammation
• Patients with congenital anomaly in the rectum
• Patients judged unfit to participate in the study by medical staff for other reasons

Pediatrics patients under six years old patients undergoing general anesthesia using the Supraglottic airway device