With the rapid advancement of thoracoscopic surgery in recent years, surgeons have set higher standards for the quality of non-ventilated lung collapse. In a prior investigation, we examined a unidirectional valve device that let air exit the non-ventilated side of the lung but not enter during ventilation and showed the use of this device during one-lung ventilation (OLV) for patients undergoing thoracoscopic surgery could speed up lung collapse, lower endogenous positive end-expiratory pressure, and have no discernible effects on oxygenation. In light of this, we conducted this study to further demonstrate, by comparison with the commonly used clinical technique of occluding the non-ventilated endobronchial lumen during one-lung ventilation, that this unidirectional valve device can quicken and enhance the quality of lung collapse without raising the risk of adverse events when used in thoracoscopic surgery.
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The time needed for satisfactory lung collapse
Timeframe: The first 24 hours after surgery