Fig. 4
From: Hyperspectral imaging in systemic sclerosis-associated Raynaud phenomenon
Comparison of oxyhemoglobin, deoxyhemoglobin, and O2 saturation parameters in SSc-RP patient and HC at baseline (prior to cold provocation) and post-cold provocation. After cold provocation, systemic sclerosis (SSc) patients had a threefold greater decline in oxyHb (A) and O2 sat (C) and minimal change in deoxyHb (B) from baseline (prior to cold provocation) to “time point 0” (immediately after cold provocation). Significant changes were observed in subsequent time points (10- and 20-min post-cold provocation) in oxyHb, O2 sat, and deoxyHb compared to HC. Mixed effects model. No significance (ns), *p < 0.05, **p < 0.01