Purpose: To estimate the forced expiratory volume in 1 second (FEV1) for an adult based on physical parameters.
The Forced Expiratory Volume in 1 second (FEV1) is the volume of air expired in the first second. This is an important predictor of outcomes in patients with COPD.
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Objective: other testing, severity, prognosis, stage
ICD-10: J20-J22, J40-J47,