Table 2.

IRT and LSCI data for patients with SSc and primary RP at assessment 1. All values expressed as median (IQR).

VariablesROIBt0t5t10t15
IRT, °C
  SSc
129.8 (5.5)*21.5 (2.6)23.7 (7.1)*25.4 (9.2)*27 (9.4)*
230.8 (7.3)21.4 (2.9)24.4 (7.9)25 (9.7)26.7 (11.1)
328.8 (6.4)20.6 (3.0)*22.4 (6.2)*24 (8.8)*25.9 (9.4)
  Primary RP131.4 (8.0)21.1 (3.2)25.1 (9.5) *31.4 (11)32.4 (10.8)
230.8 (6.6)21.5 (3.5)25.2 (7.2)30.4 (10.5)31.7 (10.6)
329.5 (6.7)20.7 (3.1)*23.5 (9.6)30.5 (10.5)32 (10)
LSCI, fu
  SSc1364 (299)188 (177)*205 (282)*243 (257)298 (288)
2235 (306)**79 (84)100 (269)132 (391)128 (364)
3632 (757)*213 (424)*320 (642)*422 (955)*479 (770)*
  Primary RP1372 (378)*179 (128)*274 (346)*452 (430)*488 (446)*
2124 (93)81 (61)81 (81)104 (161)120 (128)
3536 (483)*202 (135)*261 (577)*484 (604)*487 (672)*
  • * p < 0.05 vs ROI 2.

  • p < 0.05 vs ROI 3.

  • ** p = 0.007 vs primary RP. IRT: infrared thermography; LSCI: laser speckle contrast imaging; SSc: systemic sclerosis; RP: Raynaud phenomenon; IQR: interquartile range; ROI: region of interest; B: baseline assessment at 23°C; t0: assessments immediately following cold challenge; t5: perfusion 5 min post cold challenge; t10: perfusion 10 min post cold challenge; t15: perfusion 15 min post cold challenge; fu: flux unit values.