Preoperative ROX Index and Postoperative Hypoxemia in Bariatric Surgery
ConditionHypoxemia
Trial statusNot yet recruiting
Trial phaseNot listed
Trial typeObservational
Biological sexAll
Age18-65
SponsorIstinye University
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
This trial does not accept healthy volunteersQualifiers
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 population
The study population consists of adult patients scheduled for elective bariatric surgery, including laparoscopic sleeve gastrectomy and Roux-en-Y gastric bypass. All participants are obese (BMI ≥ 35 kg/m²) and evaluated preoperatively in the anesthesia clinic prior to surgery.
Trial design
Design model
Cohort
Time perspective
Prospective
Treatments tested in this trial
Preoperative ROX Index Assessment
Other interventionParticipants will undergo a preoperative assessment including measurement of the ROX index (SpO₂/FiO₂ divided by respiratory rate) before bariatric surgery. No treatment or study-related intervention will be applied; all perioperative care will follow routine clinical practice.
Treatment groups
No treatment groups listed
Trial outcomes
Primary outcomes
1
Early Postoperative Hypoxemia
Hypoxemia defined as SpO₂ \< 92% or new oxygen requirement within the first postoperative hours.
Time frame
Postoperative 0-12 hoursSponsors and contacts
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Source ClinicalTrials.gov
This trial is not recruiting at the moment. You can still explore other options: