Fundamental supply of skin blood flow in the Chinese Han population: Measurements by a full-field laser perfusion imager.

Background: Skin blood flow is believed to link with many diseases, and shows a significant heterogeneity. There are several papers on basal cutaneous microcirculation perfusion in different races, while the data in Chinese is vacant. Objective: The aim was to establish the database of absolute fundamental supply of skin blood flow in the Chinese Han population. Methods: With a full-field laser perfusion imager (FLPI), the skin blood flow can be quantified. Cutaneous perfusion values were determined in 17 selected skin areas in 406 healthy participants aged between 20 and 80 years (mean 35.0511.33). Essential parameters such as weight, height were also measured and values of BMI were calculated. The perfusion values were reported in Arbitrary Perfusion Units (APU). Results: The highest cutaneous perfusion value fell on eyelid (931.20 +/- 242.59 in male and 967.83 +/- 225.49 in female), and pretibial had the lowest value (89.09 +/- 30.28 in male and 85.08 +/- 33.59 in female). The values were higher in men than women on the bank of fingertips, nose, forehead, cheek, neck and earlobe (P < .05). Perfusion values on stretch and flexion side of forearm had negative correlation with age (P = .01 and P = 4.88 x 10(-3), respectively) in male. Abdomen was negatively correlated with BMI in both gender (P = .02, respectively). Conclusions: Skin blood flow values vary with skin regions. There is a tendency to measure higher perfusion values in men than in women. And the values are irrelevant with age or BMI.