Respiratory failure & ventilation

Effect of intraoperative high positive end-expiratory pressure with recruitment manoeuvres versus low positive end-expiratory pressure on postoperative lung function in obese adults: a substudy of the protective ventilation in obese patients randomised controlled trial

BJA OpenPublished Secondary analysis of the Protective Ventilation in Obese Patients randomised controlled trial

Primary result · Change in FEV1 from baseline to POD 1Result — go to the resultBetween-group effect 0.0 L 95% CI −0.4 to 0.4

Authors' conclusion

In obese patients undergoing abdominal surgery with low tidal volume ventilation, high PEEP with recruitment manoeuvers did not improve postoperative spirometric outcomes or oxygen saturation compared with low PEEP without routine recruitment manoeuvres.

Study context

Population
Adults with BMI ≥35 kg·m-2 undergoing abdominal surgery, Ghent University Hospital, Belgiumpostoperative spirometry available
Participants
44 adults
Comparison
High PEEP vs Low PEEP
  • High PEEPn = 21
  • Low PEEPn = 23reference
Primary endpoint
Change in FEV1 from baseline to POD 1
Follow-up
Postoperative day 1
Methodological detailssingle-centre, substudy
  • Single-centre
  • Substudy

Primary result

As reported in the abstract

Between-group effect

0.0 L

95% CI −0.4 to 0.4

P = 0.89

Change by group

Low PEEP

−0.90

SD 0.68 · L

High PEEP

−0.93

SD 0.66 · L

Secondary outcomes

Spirometry variables and oxygen saturation

No differences observed in secondary outcomes

Postoperative lung function

Declined in all patients

Original publication

Effect of intraoperative high positive end-expiratory pressure with recruitment manoeuvres versus low positive end-expiratory pressure on postoperative lung function in obese adults: a substudy of the protective ventilation in obese patients randomised controlled trial. BJA Open. Published 30 September 2026. doi:10.1016/j.bjao.2026.100864

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