Comparison of laser Doppler imaging, fingertip lacticemy test, and nailfold capillaroscopy for assessment of digital microcirculation in systemic sclerosis

Table 2 Finger blood flow before and after cold stimulus in controls and in systemic sclerosis patients

	Finger blood flow (perfusion units)
	Systemic sclerosis patients	Healthy controls	P value
Baseline FBF	296.9 ± 208.8	503.6 ± 146.4	<0.001
T1 FBF	113.5 ± 86.0	290.2 ± 131.0	<0.001
T4 FBF	155.1 ± 155.6	361.6 ± 177.0	<0.001
T10 FBF	221.3 ± 198.4	412.4 ± 172.1	<0.001
T17 FBF	218.3 ± 196.5	380.8 ± 147.2	<0.001
T20 FBF	224.3 ± 198.7	387.2 ± 142.9	<0.001
T27 FBF	209.9 ± 185.2	437.7 ± 171.8	<0.001

Data presented as mean ± standard deviation. Mean finger blood flow (FBF) at baseline and after 15°C cold stimulus at different time points: T1, 1 minute; T4, 4 minutes and 15 seconds; T10, 10 minutes and 45 seconds; T17, 17 minutes and 15 seconds; T20, 20 minutes and 30 seconds; and T27, 27 minutes after cold stimulus.

ISSN: 1478-6362