Gascoigne A D, Corris P A, Dark J H, Gibson G J
Department of Respiratory Medicine, Freeman Hospital, Newcastle upon Tyne.
Thorax. 1990 Aug;45(8):637-8. doi: 10.1136/thx.45.8.637.
Two patients with narrowing of a mainstem bronchus each showed two unusual functional features that are likely to be characteristic of this condition. The maximum inspiratory flow-volume curve showed an end inspiratory "tail" and the forced expiratory spirogram had a biphasic shape with normal initial curvature but a "straight line" appearance in later expiration. In one patient relief of the bronchial stenosis by the insertion of a stent restored normal contours to the spirogram and flow-volume curves.
两名主支气管狭窄患者均表现出两种不寻常的功能特征，这可能是该病症的特点。最大吸气流量-容积曲线显示吸气末有“尾巴”，用力呼气肺量图呈双相形状，初始曲率正常，但在呼气后期呈“直线”状。在一名患者中，通过植入支架缓解支气管狭窄后，肺量图和流量-容积曲线恢复了正常形态。
