Overview
With the support of partial dual temperature monitoring (comparing the specific difference between standardized axillary temperature monitoring and esophageal temperature), this trial is divided into the following three parts:
- Multi center observational study: Establish and validate a dynamic incremental training intraoperative hypothermia prediction model - Intelligent Care for the Elderly (ICE) - Intraoperative hypothermia warning system, and provide ICE Offline for use by healthcare professionals and ICE Online for further model updates when needed for clinical or research purposes.
- Multi center non randomized controlled clinical trial: Conduct a multi center stratified temperature management clinical trial based on ICE Offline after dynamic incremental training to verify the clinical and economic benefits of the model and active warming.
- Pre and post comparative study: Collect data before ICE application and compare it with data after ICE promotion.
Eligibility
Inclusion Criteria:
- Elderly patients (aged 60 and above) undergoing non cardiac elective surgery under general anesthesia;
- Surgical duration ≥ 30 minutes;
- Normal preoperative bleeding and clotting time
- American society of Aneshesiologists physical status classification system:Ⅰ～Ⅳ
Exclusion Criteria:
- Mental illness
- Cirrhosis
- Existence or potential central hyperthermia
- Metabolic thermoregulatory abnormalities
- History of malignant hyperthermia or family history
- Extensive skin burns or injuries
- Seriously infect
- Long term use of nonsteroidal anti-inflammatory drugs
- Expected difficult airway
- Researchers believe that individuals who are not suitable to participate in clinical trial
- Refusal to sign informed consent form
- Withdraw informed consent form
- Severe bleeding or shock during perioperative period.