This prospective observational study aims to evaluate the association between preoperative abdominal subcutaneous fat thickness measured by ultrasonography and intraoperative driving pressure in adult patients undergoing elective spinal surgery in the prone position under general anesthesia. Anthropometric measurements including body mass index, waist circumference, waist-to-height ratio, and neck circumference will also be evaluated for their association with respiratory mechanics. No additional intervention beyond routine clinical care will be performed.
Inclusion Criteria:
Adults aged 18 years or older Elective spinal surgery General anesthesia Prone position ASA physical status I-III Body mass index 18.5-39.9 kg/m²
Exclusion Criteria:
Emergency surgery Pregnancy Severe restrictive or obstructive pulmonary disease Hemodynamic instability Body mass index <18.5 or ≥40 kg/m² Incomplete study measurements
dryadigaryilmaz@gmail.com0090 (216) 542 2020
Adult patients undergoing elective spinal surgery in the prone position under general anesthesia. Preoperative ultrasonographic abdominal subcutaneous fat thickness and intraoperative respiratory mechanics will be evaluated.
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