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Ventilation Mode and Atelectasis After Prone-Position Surgery: A Lung Ultrasound Study

NCT07680881 · Status: COMPLETED · Type: OBSERVATIONAL · Enrollment: 90

Last updated 2026-07-29

No results posted yet for this study

Summary

This prospective single-centre observational study compared two intraoperative mechanical ventilation modes, volume-controlled ventilation (VCV) and VCV with AutoFlow/AF, in adults undergoing elective surgery in the prone position. The ventilation mode was selected by the attending anaesthesiologist as part of routine clinical care; the investigators did not assign it. Perioperative atelectasis was assessed using a modified bilateral 12-zone lung ultrasound score obtained before induction of anaesthesia and after extubation, and oxygenation was assessed using the alveolar-arterial oxygen gradient calculated from an intraoperative arterial blood gas sample. The study also examined whether the effect of ventilation mode on atelectasis differed according to obesity.

Conditions

  • Pulmonary Atelectasis, Postoperative
  • Postoperative Pulmonary Complications

Sponsors & Collaborators

  • Prof. Dr. Cemil Tascıoglu Education and Research Hospital Organization

    lead OTHER

Eligibility

Min Age
18 Years
Max Age
65 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2024-03-01
Primary Completion
2024-10-30
Completion
2024-10-30

Countries

  • Turkey (Türkiye)

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07680881 on ClinicalTrials.gov