Ratio of FEV1/Slow Vital Capacity of < 0.7 Is Associated With Clinical, Functional, and Radiologic Features of Obstructive Lung Disease in Smokers With Preserved Lung Function

Is slow better than fast? In ever smokers with normal spirometry, a ratio of FEV1/slow vital capacity <0.7 can identify those with CT scan features of COPD who are at risk for severe exacerbations and progression to COPD: https://t.co/riQGF3imfk http…

Un VEF1/CV lenta <0,7 se asoció a progresión a #EPOC en 3 años incluso con ajuste por demografía y exposición al tabaquismo (OR, 3,93). Resultado similar se obtuvo con VEF1/CVlenta prebroncodilatador <0,7 o menor a límite inferior de normalidad/1 ht…

RT @accpchest: Is slow better than fast? In ever smokers with normal spirometry, a ratio of FEV1/slow vital capacity <0.7 can identify thos…

Slow vital capacity (SVC) is the volume of air expired, but this time through an unforced maneuver. In the young these are similar but in emphysema, where there is loss of elastic recoil, FVC may fall disproportionately more than SVC.