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Flow-Controlled vs Volume-Controlled Ventilation in Morbidly Obese Patients Undergoing Laparoscopic Bariatric Surgery

NCT07641829 · Status: COMPLETED · Type: OBSERVATIONAL · Enrollment: 34

Last updated 2026-07-23

No results posted yet for this study

Summary

The goal of this clinical trial is to compare the effects of flow-controlled ventilation (FCV) and volume-controlled ventilation (VCV) on hemodynamic and respiratory parameters in obese patients undergoing elective laparoscopic bariatric surgery. The main questions it aims to answer are:

Does FCV provide better intraoperative hemodynamic and respiratory stability compared to VCV during laparoscopic bariatric surgery? Is FCV a safe and feasible ventilation strategy under high intraabdominal pressure and position changes required in bariatric surgery?

Researchers will compare FCV group to VCV group to see if FCV improves intraoperative respiratory mechanics and hemodynamic parameters.

Participants will:

Undergo elective laparoscopic bariatric surgery with BMI \>40 kg/m² (ASA I-III) Receive either flow-controlled or volume-controlled ventilation with individualized PEEP and tidal volume of 6-8 ml/kg predicted body weight Have intraoperative hemodynamic and respiratory parameters monitored at regular intervals, including arterial blood gas analysis Be followed postoperatively for oxygen therapy requirement and intensive care need

Conditions

  • Obesity, Morbid
  • Bariatric Surgery (Sleeve Gastrectomy )
  • Mechanical Ventilation

Interventions

DEVICE

Flow-Controlled Ventilation (FCV)

Patients were ventilated using flow-controlled ventilation with a tidal volume of 6-8 ml/kg predicted body weight. PEEP was individualized based on respiratory compliance following CO₂ insufflation.

DEVICE

Volume-Controlled Ventilation (VCV)

Patients were ventilated using volume-controlled ventilation with a tidal volume of 6-8 ml/kg predicted body weight. PEEP titration was performed in eligible patients.

Sponsors & Collaborators

  • Ankara Training and Research Hospital

    lead OTHER

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2026-03-15
Primary Completion
2026-07-20
Completion
2026-07-21

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 NCT07641829 on ClinicalTrials.gov