Effect of Bilateral vs. Unilateral Alveolar Recruitment on Gas Exchange in Lung Resection

ARM is performed to the dependent lung only. During ARM, mechanical ventilation is set to a pressure-controlled ventilation mode with a driving pressure of 20 cmH₂O and an inspiratory-to-expiratory ratio of 1:1. The positive end-expiratory pressure (PEEP) is increased by 5 cmH₂O every five respiratory cycles, reaching a final PEEP of 20 cmH₂O and a peak airway pressure of 40 cmH₂O, which is then maintained for ten respiratory cycles.

ARM is performed to both lungs. During ARM, mechanical ventilation is set to a pressure-controlled ventilation mode with a driving pressure of 20 cmH₂O and an inspiratory-to-expiratory ratio of 1:1. The positive end-expiratory pressure (PEEP) is increased by 5 cmH₂O every five respiratory cycles, reaching a final PEEP of 20 cmH₂O and a peak airway pressure of 40 cmH₂O, which is then maintained for ten respiratory cycles.