差异性或选择性肺通气差异性肺通气(Differential Lung Ventilation简称DLV)是指不同肺、肺叶或肺段以不同的频率、潮气量或和压力的通气方式,适用于表现为单侧性或以一侧病变为主、或某一区域病变情况下使用。此时病肺的顺应性较低,气道阻力较大,传统的通气方式治疗时大部分的潮气量被压送入健肺,造成更大的通气血流比例失调。应用PEEP可使健肺过度膨胀而病肺仍残气不足。虽然病人取侧卧位可以改善这种通气血流比例失调,但是这样一方面效果不明显,二来可能促使痰液滞留,诱发严重的肺感染,实不足取。DLV可以解决这一矛盾。这种通气方式是通过一个双腔气管内套管,放入两个不同形状及功能的送气 Differential or selective lung ventilation Differential lung ventilation (Differential Lung Ventilation referred to as DLV) refers to different lungs, lung lobes or lungs in different frequency, tidal volume or pressure ventilation, suitable for the performance of unilateral or Side of the main lesions, or lesions of a particular area to use. At this time less compliance pulmonary disease, larger airway resistance, the traditional method of ventilation when most of the tidal volume is sent into the lungs, resulting in greater ventilation and blood flow imbalance. Application of PEEP can cause excessive expansion of healthy lungs and lungs are still lack of residual gas. Although patients with lateral position can improve this imbalance of ventilation and blood flow, but this effect is not obvious on the one hand, and secondly to promote sputum retention, induced severe lung infection, it is not enough. DLV can solve this contradiction. This ventilation is through a double-lumen endotracheal tube into two different shapes and functions of the air supply