Research published in Thorax indicates that use of a lower limit of normal (LLN) spirometric threshold fails to identify a number of patients with airflow obstruction and chronic obstructive pulmonary ...
The 70% ratio of forced expiratory volume in 1 second to forced vital capacity proved as or more accurate than other thresholds for predicting chronic obstructive pulmonary disease (COPD)–related ...
Clinicians should rely on both a low forced expiratory volume in 1 second (FEV 1)/forced vital capacity (FVC) (according to fixed ratio and/or lower limit of normal [LLN]) and a low FEV 1 to avoid ...
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