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

Table 3

Comparisons of pulmonary function parameters between groups with and without improvement.

Parameters	Group without improvement ()	Group with improvement ()	value
FVC (%)			0.558
FEV1/FVC (%)			0.020
MEF50 (%)			0.553
TLC (%)			0.058
DLCO (%)			0.001
FVC/DLCO			0.002

Bold values are statistically significant (). 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.