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Flow-Controlled Versus Volume-Controlled Ventilation in Lumbar Disc Herniation Surgery

RecruitingNAAges 18 Years - 65 YearsAllAnkara Etlik City Hospital
NCT07614555 on ClinicalTrials.gov ↗
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In plain words

What the trial is, and whether it could suit you

This prospective randomized trial aims to compare the effects of flow-controlled ventilation (FCV) and volume-controlled ventilation (VCV) on intraoperative airway pressures and oxygenation in patients undergoing lumbar disc herniation surgery under general anesthesia. Adult patients aged 18-65 years, with ASA physical status I-III and a body mass index of 18-30 kg/m², will be allocated to receive either FCV or VCV during routine intraoperative mechanical ventilation. Ventilatory parameters, including peak airway pressure, plateau pressure, pulmonary compliance, EtCO₂, SpO₂, and arterial blood gas variables, will be recorded at predefined time points after intubation. The primary endpoint is the PaO₂ value measured after 20 minutes in the prone position. By comparing respiratory mechanics and oxygenation between the two ventilation modes, this study aims to contribute to the optimizat

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📋 Eligibility rules (as published)
Inclusion Criteria: * Age between 18 and 65 years * ASA physical status I-III * Body Mass Index between 18 and 30 kg/m² Exclusion Criteria: * Age \< 18 years or \> 65 years * Known or previously diagnosed pulmonary disease * Patients with severe preoperative pulmonary function impairment (e.g., FEV₁ \< 50% predicted, severe restrictive or obstructive pathology) * Patients with markedly altered lung anatomy or function due to prior major thoracic surgery * Patients who were dependent on supplemental oxygen therapy in the preoperative period * ASA physical status IV or higher * Refusal or inability to provide informed consent
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What it tests

  • FCV Group
  • VCV Group
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Where

1 site
Ankara Etlik City Hospital
Ankara, Turkey (Türkiye)
🤝 Taking part is your choice, and you can leave at any time. Only the trial team can confirm you are eligible — always decide together with your own doctor.
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