抽象的
单侧气道闭塞允许测量单肺功能。由于结果表明,闭塞肺部影响了对侧半胸部的流动性,我们想测试这一假设。在八个健康的科目中,我们测量,使用计算机断层扫描,肺实质区域和内肋笼放缓和横向直径,在三种不同的水平和最大的灵感和到期。在残留体积(RV)和总肺容量(TLC)的一个主干支气管的球囊闭塞期间进行了这些测量。在RV的单侧闭塞降低了最大灵感中的同侧直径,但在没有闭塞的情况下,吸毒期间的增加仍然是39-50%。对侧直径的吸气增加减少到没有闭塞的增长的64-80%。在TLC的闭塞降低了呼气量降低了同侧直径至37-57%而不会闭塞。对侧侧的呼气下降减少到56-70%的情况下没有闭塞。由于伴随的纵隔移位,闭塞肺的实质区域几乎没有变化。相反,对侧区域的86-97%没有闭塞。 We conclude that the movement of the two hemithoraces are, at least partially, interdependent. The occluded hemithorax prevents full expansion/compression of the nonoccluded contralateral side, whilst its own mobility appears to be increased by the presence of this nonoccluded side. Potential negative effects are outweighed by the physiological benefit of the coupling, as this mechanism could secure ventilation to a chest half without own movement.