Comparing Two Lung Recruitment Techniques to Improve Lung Function After Heart Surgery Using Cardiopulmonary Bypass

What this Trial Is About

Researchers are evaluating two different lung recruitment methods in adults undergoing planned heart surgery with cardiopulmonary bypass to see how each affects heart function and lung health. The trial focuses on comparing a single-step sustained inflation maneuver and a stepwise incremental maneuver, both used after the heart-lung machine is stopped. This study aims to find the best approach to improve lung function while keeping the heart stable during recovery after surgery. Participants will receive one of two lung recruitment maneuvers after separation from cardiopulmonary bypass either a single-step sustained inflation at 30 cmH2O for 30 seconds or a stepwise maneuver increasing airway pressure by 5 cmH2O every 5 seconds up to 30 cmH2O, then decreasing similarly. Both methods are combined with continuous positive pressure of 8 cmH2O to keep the lungs open. This randomized trial compares these two procedures to assess their effects on heart and lung function. During the study, participants will have hemodynamic measurements, including cardiac index, heart rate, blood pressure, and lung ultrasound atelectasis scores taken before and after the recruitment maneuvers and on the first day after surgery. Additional assessments include blood gas analysis and lung mechanics. Researchers will also monitor recovery markers such as extubation time and ICU stay length. The total involvement covers the intraoperative period through postoperative day one, focusing on safety and effectiveness of the lung recruitment strategies.

Single-step vs Stepwise Lung Recruitment Maneuvers After Cardiopulmonary Bypass