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FEV1/FVC
Also see pulmonary function test, FEV1 & FVC.
Indications:
- primary assessment used to determine obstructive lung disease
Interpretation:
- FEV1/FVC < 0.7 is consistent with obstuctive lung disease*
- FEV1/FVC > 0.75 is consistent with normal lung fucntion or restrictive lung disease *
* FEV1/FVC is decreased in most but not all patients with chronic bronchitis [2]
General
analyte ratio
References
- Medical Knowledge Self Assessment Program (MKSAP) 19
American College of Physicians, Philadelphia 2022
- Mejza F, Gnatiuc L, Buist AS et al
Prevalence and burden of chronic bronchitis symptoms: results from the BOLD study.
Eur Respir J. 2017 Nov 22;50(5):1700621.
PMID: 29167298 PMCID: PMC5699921 Free PMC article.
Components
forced expiratory volume in 1 second (FEV1)
forced vital capacity (FVC)