Ultrasonographic Abdominal Fat Thickness and Driving Pressure During Prone Spinal Surgery

Association Between Ultrasonographic Abdominal Subcutaneous Fat Thickness and Intraoperative Driving Pressure in Adult Patients Undergoing Elective Prone Spinal Surgery: A Prospective Observational Study

Status

Not yet recruiting

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT07723690

Enrollment

120

Registered

2026-07-23

Start date

2026-07-30

Completion date

2026-11-30

Last updated

2026-07-23

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Respiratory Mechanics

Brief summary

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.

Interventions

None listed

Study design

Observational model

COHORT

Time perspective

PROSPECTIVE

Eligibility

Sex/Gender

ALL

Age

18 Years to 65 Years

Healthy volunteers

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

Design outcomes

Primary

Measure	Time frame
Intraoperative Driving Pressure	10 minutes after prone positioning, before surgical manipulation

Contacts

CONTACTyadigar YILMAZ

dryadigaryilmaz@gmail.com0090 (216) 542 2020

Outcome results