The Role of Pulmonary Function Test for Pulmonary Arterial Hypertension in Patients with Connective Tissue Disease

Figure 1

Pie chart of different pulmonary function parameters. FVC: forced vital capacity; FEV1: forced expiratory volume in 1 second; MEF50: maximum expiratory flow at 50% of vital capacity; TLC: total lung capacity; DLCO: diffusing capacity of the lung for carbon monoxide.

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