Moni-Patch Temperature Data Collection for Algorithm Development During Surgery

Inclusion Criteria: Adults aged 18 years or older. Patients scheduled for elective surgery under general anesthesia expected to last at least 120 minutes. Patients for whom continuous esophageal temperature monitoring is planned as part of routine clinical care. Patients able to provide their own written informed consent and who agree to Moni-Patch sensor placement on the neck before surgery. Patients in whom the Moni-Patch sensor can be securely attached over the carotid artery without interfering with the surgical field or wireless connection to the data logger. Patients undergoing procedures in an environment meeting the device operating requirements of 15-40°C and 30-75% relative humidity. For non-English-speaking patients, a translator must be available during the informed consent process. Exclusion Criteria: Patients unable to provide their own informed consent. Patients with esophageal conditions contraindicating placement of an esophageal temperature probe. Patients whose planned procedures do not include esophageal temperature monitoring. Patients undergoing procedures that prevent placement of the required esophageal temperature probe. Patients with skin inflammation, scratches, redness, rash, or other conditions at the Moni-Patch placement site. Patients in whom the Moni-Patch sensor cannot be securely attached or accurately positioned over the carotid artery. Patients undergoing procedures involving MRI or CT environments where device use is prohibited by the protocol. Patients for whom device operating environment requirements cannot be met.