Gallagher C G, Huda W, Rigby M, Greenberg D, Younes M
Department of Radiology, University of Manitoba, Winnipeg, Canada.
Am Rev Respir Dis. 1988 Feb;137(2):474-6. doi: 10.1164/ajrccm/137.2.474.
Recent physiologic studies have indirectly suggested that interstitial pulmonary edema may develop at maximal exercise in normal humans at sea level. Therefore, we compared chest radiographs taken before and immediately after incremental exercise to maximum in 5 healthy young subjects. We looked for evidence of redistribution of pulmonary blood flow, pulmonary venous distension, loss of sharp definition of pulmonary vascular markings, hilar blurring, Kerley's A, B, or C lines, peribronchial or perivascular cuffing, widening of fissures, pleural effusion, and diffuse opacity. We also quantitated radiographic density in 6 areas of the film in each subject. There was no radiographic change to suggest an increase in lung water in any lung zone in any of the subjects. Given the documented sensitivity of chest radiography in this respect, we conclude that any increase in extravascular lung water during exercise must be trivial.
最近的生理学研究间接表明，海平面正常人类在最大运动量时可能会发生间质性肺水肿。因此，我们比较了5名健康年轻受试者在递增运动至最大运动量之前和之后立即拍摄的胸部X光片。我们寻找肺血流重新分布、肺静脉扩张、肺血管纹理清晰度丧失、肺门模糊、克氏A、B或C线、支气管周围或血管周围袖套征、叶间裂增宽、胸腔积液和弥漫性模糊影的证据。我们还对每个受试者胸片的6个区域的放射密度进行了定量分析。在任何受试者的任何肺区，均未发现提示肺水增加的影像学改变。鉴于胸部X光检查在这方面已被证实的敏感性，我们得出结论，运动期间血管外肺水的任何增加都必定微不足道。
