Table 2.

Pulmonary function test and echocardiography within a 3-month period of nailfold videocapillaroscopy

Variable	N	Result
Pulmonary function test
FVC, % predicted	134	80.8 (± 20.1)
DLCO, % predicted	134	66.2 (± 23.7)
FVC%/DLCO%	134	1.5 (± 0.4)
Echocardiography
RVSP (mmHg)	96	30.7 (± 12.0)
TRV (m/s)	96	2.8 (± 0.3)
TRV ≥ 2.9 m/s or other echo PH signs	134	14 (10.4)

Data presented as mean (± standard deviation) for continuous variables and as number (%) for categorical variables

FVC forced vital capacity, DLCO diffusion capacity of the lung for carbon monoxide, RVSP right ventricular systolic pressure, TRV tricuspid regurgitation velocity, PH pulmonary hypertension