Individualized PEEP for preventing lung complications in obese patients after surgery

Effects of Individualized Positive End-expiratory Pressure Guided by Driving Pressure on Postoperative Atelectasis After Bariatric Surgery in Patients With Morbid Obesity: A Single-center, Prospective, Randomized Controlled Study

Not applicable Interventional Qianfoshan Hospital · NCT06181279

This study is testing if a personalized breathing support method can help prevent lung problems in very overweight patients after they have bariatric surgery.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment52 (estimated)
Ages18 Years to 60 Years
SexAll
SponsorQianfoshan Hospital Academic / other
Locations1 site (Jinan, Shandong)
Trial IDNCT06181279 on ClinicalTrials.gov

What this trial studies

This clinical trial investigates the effects of individualized positive end-expiratory pressure (PEEP) guided by driving pressure on postoperative atelectasis in morbidly obese patients undergoing bariatric surgery. The study aims to determine whether a tailored PEEP strategy can reduce the incidence of atelectasis compared to a fixed PEEP approach. By focusing on the unique respiratory mechanics of each patient, the trial seeks to enhance lung protection during and after surgery. It is a single-center, randomized controlled trial designed to provide insights into optimal ventilation strategies for this high-risk population.

Who should consider this trial

Good fit: Ideal candidates for this study are adults aged 18 to 60 with a body mass index of 40 kg/m2 or higher undergoing bariatric surgery.

Not a fit: Patients with severe respiratory diseases, recent respiratory infections, or contraindications to PEEP may not benefit from this study.

Why it matters

Potential benefit: If successful, this approach could significantly reduce the risk of postoperative lung complications in morbidly obese patients.

How similar studies have performed: Previous studies have shown that individualized PEEP strategies can improve oxygenation in both obese and non-obese patients, suggesting potential success for this novel approach.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Age 18 to 60 years old;
* Body mass index (BMI) ≥ 40 kg/m2;
* ASA classification I to III;
* Signing the informed consent form for this clinical study;

Exclusion Criteria:

* Respiratory infection within 4 weeks; severe respiratory system diseases; history of pulmonary and/or thoracic surgery; neuromuscular dysfunction;
* Serious cardiac, renal or haematopoietic diseases;
* Contraindications to PEEP;

Where this trial is running

Jinan, Shandong

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Pulmonary AtelectasisObesity, MorbidIndividual Positive End-expiratory PressureDriving PressureVentilator-induced Lung Injury
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.