This prospective observational study aims to evaluate the association between perioperative hypothermia and sevoflurane consumption in elderly patients undergoing hip arthroplasty under general anesthesia. Patients aged 65 years and older will be included. Perioperative body temperature and anesthetic consumption will be recorded, and the relationship between hypothermia and anesthetic requirements will be analyzed. The findings may help clarify whether hypothermia influences anesthetic depth monitoring and anesthetic consumption in elderly surgical patients.
Age ≥ 65 years
Elective hip arthroplasty under general anesthesia
ASA physical status I-III
Preoperative Mini-Cog score ≤ 2
Neurological or psychiatric disorders affecting cognitive function
Endocrine or metabolic disorders affecting thermoregulation
Excessive intraoperative blood loss
Patients aged 65 years and older undergoing elective hip arthroplasty under general anesthesia.
Cohort
Prospective
Not listed
Sevoflurane consumption (mL/hour)
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