Methods/Design: This is to be a randomized, multicentre, open-label clinical trial. A total of 444 smokers over 40 years of age will be recruited by 39 general practitioners from 22 health centers ...

Your FEV1 score alone isn’t used to diagnose COPD or asthma. A diagnosis requires a calculation involving FEV1 and another breathing measurement called forced vital capacity (FVC).

The FEV1/FVC ratio is just one of several measurements taken with a spirometer (a handheld device that measures the volume of air expired or inspired by the lungs). The test can be performed in a ...

然而，FEV 1 /FVC 比值与全因死亡率之间的关系，尤其是非线性关系，在普通人群中还并不明确。多数研究聚焦于特定人群，特别是 COPD 患者，对于普通人群的探索十分有限。因此，为了填补这一空白，广州医科大学等机构的研究人员开展了一项重要研究，相关成果发表在《BMC Pulmonary Medicine》上。

The FEV1/FVC ratio is an easily applicable index because it does not require calculation of the predicted value. 3 18 Since only a few studies have evaluated the usefulness of the FEV1/FVC ratio in ...

"Additionally, men experienced a 17% reduced risk of airway obstruction. In women, while higher hemoglobin levels were linked to improved FVC, there was no significant effect on FEV1, FEV1/FVC, or the ...

A total of 1222 TAHS participants (51%) were in the average (reference) FEV1/FVC trajectory, and 709 (29%) were in the 3 most impaired trajectories, including 114 (98%) who had spirometry-defined COPD ...

For example, lower FVC values indicate restricted breathing and lower FEV1 readings indicate bronchial obstruction. In healthy people, the FEV1/FVC ratio is 70 to 80 percent. If values are lower than ...

In an effort to see if a deep learning-based AI model could estimate FVC and FEV 1 from chest X-rays, Ueda and colleagues trained, validated and internally tested the model using 134,307 X-ray and ...

In asthma and chronic obstructive pulmonary disease (COPD), lower forced expiratory volume in 1 second (FEV 1) and lower forced vital capacity (FVC) are significantly associated with respiratory and ...