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Fig. 2 | BMC Pulmonary Medicine

Fig. 2

From: Reference value for expiratory time constant calculated from the maximal expiratory flow-volume curve

Fig. 2

The relationship between expiratory time constant (RCEXP) and forced expiratory volume in 1 s/forced vital capacity (FEV1/FVC). The value of RCEXP, which is calculated based on the effort-independent part of the MEFV curves, is closely associated with FEV1/FVC, with a high R2 value of 0.8204 (P < 0.001). Notably, there is a substantial increase in RCEXP with an FEV1/FVC ratio being less than approximately 0.70

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BMC Pulmonary Medicine

ISSN: 1471-2466

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