If a doctor suspects you have a lung condition, they’ll calculate your FEV1/FVC ratio. This represents the percentage of your lung capacity you can expel in one second. The higher your ...

There are calculators for determining BMI ... can forcefully and quickly exhale after taking a deep breath. The ratio FEV1/FVC, therefore, represents the total percentage of air that can be ...

Normal result Abnormal result FEV1 80 ... value FVC greater to or equal to the lower limit of the predicted value less than the lower limit of the predicted value An FEV1/FVC ratio of less than ...

Preserved ratio impaired spirometry (PRISm ... reduction of both forced expiratory volume in 1 second (FEV1) and forced vital capacity (FVC) without airflow obstruction. Researchers aimed to ...