About this trial
This prospective observational study evaluates whether the preoperative ROX index can predict early postoperative hypoxemia in patients undergoing bariatric surgery. Preoperative ROX measurements, along with ARISCAT and STOP-Bang scores, will be assessed for their association with hypoxemia occurring within the first 12 postoperative hours.
Eligibility criteria
Qualifiers
Adults aged 18-65 years
Scheduled for elective bariatric surgery (laparoscopic sleeve gastrectomy or Roux-en-Y gastric bypass)
Body mass index (BMI) ≥ 35 kg/m²
ASA physical status I-III
Disqualifiers
Acute respiratory failure, pneumonia, or active pulmonary infection
Receiving oxygen therapy or respiratory support (nasal cannula, CPAP, BiPAP, or high-flow oxygen) preoperatively
Preoperative SpO₂ < 88% on room air
Significant cardiac arrhythmia, severe heart failure (NYHA class III-IV), or hemodynamic instability
Trial design
Treatments tested in this trial
- Preoperative ROX Index Assessment