This study is designed to simultaneously apply both the test and control devices to each subject. All subjects (N = 105) will have the sensors attached at the same anatomical position; therefore, no group assignment (randomization) will be conducted.
* Simultaneous Measurement: Both the Bair Hugger™ Model 370 and XST600 will measure temperature concurrently.
* Target Core Temperature: Only subjects with a core temperature of 36.1 or higher (as measured by Reference Clinical Thermometer) will be included.
Inclusion Criteria
1. Males and females aged 19 to 80 years.
2. Patients requiring continuous temperature monitoring in the Operating Room or Intensive Care Unit.
3. Subjects (or their legal representatives) who have been fully informed about the study and have voluntarily provided written informed consent.
Exclusion Criteria
1. Skin Conditions: Presence or high risk of skin diseases, wounds, infections, or allergic reactions (e.g., rash) at the application site (forehead).
2. Medication Interference: \* Current use of drugs that may interfere with clinical trial results, such as barbiturates (sedatives/hypnotics), thyroid preparations, or antipsychotic drugs (per ISO 80601-2-56).
o Administration of antipyretics within the last 120 minutes or immunization within the last month (per ISO 80601-2-56).
3. Medical History: Any underlying medical condition that may significantly impact the interpretation of the clinical results.
4. Investigator Discretion: Any individual deemed inappropriate for participation by the principal investigator.
Measurement Methods \& Data Acquisition
1. Bair Hugger™ Temperature Monitoring System Model 370
* Setup: Connect the sensor to the cable connector, ensuring the tab is fully inserted and aligned.
* Stabilization: Allow a minimum of 5 minutes for the temperature to stabilize.
* Recording: Once stable, press 'Start' in the app. Data will be recorded for a minimum of 25 minutes post-stabilization.
* Frequency: Measurements will be recorded at 1-minute intervals.
2. XST600 Measurement Method
* Recording: Once the measured temperature stabilizes (minimum 5 minutes), press the 'Start' button in the app.
* Duration: The recording duration shall be at least 25 minutes following the stabilization period.
* Automation: Upon clicking 'Start', data is automatically saved at 1-second intervals. The process concludes when the 'End' button is clicked.
