Abraham P, Leftheriotis G, Desvaux B, Saumet M, Saumet J L
Laboratoire de physiologie et d'explorations vasculaires C.H.U. d'Angers, France.
Clin Physiol. 1994 Jan;14(1):15-21. doi: 10.1111/j.1475-097x.1994.tb00485.x.
Unlike most studies on deep veins performed with simultaneous suppression of cutaneous blood flow, a sonographic study of femoral diameter and blood flow velocity changes in response to thermal stress was performed while cutaneous flow was preserved. In 11 normal subjects, mean peak blood flow velocity and diameter of the femoral vein were measured at rest and during indirect whole body heating and cooling. Mean peak venous blood flow velocity was 0.12 +/- 0.06 m s-1 at rest, 0.35 +/- 0.23 m s-1 (P < 0.001) during heat stress, and 0.13 +/- 0.07 m s-1 during cold stress (NS). Femoral venous diameter was 5.3 +/- 0.9 mm at rest, 5.1 +/- 1.0 mm (P < 0.05) during warming, and 5.4 +/- 81.0 mm (NS) during cooling. This study showed a decrease in diameter during thermal stress. However, as mean femoral venous blood-flow velocity was doubled during heat stress, femoral venous blood flow was increased. Thus, it is suggested that during heat stress part of the increase in cutaneous flow is returned through deep veins.
与大多数在同时抑制皮肤血流的情况下对深静脉进行的研究不同，本研究在保留皮肤血流的同时，对股静脉直径和血流速度随热应激的变化进行了超声检查。对11名正常受试者在静息状态、间接全身加热和冷却过程中测量股静脉的平均峰值血流速度和直径。静息时股静脉平均峰值血流速度为0.12±0.06 m/s，热应激时为0.35±0.23 m/s（P<0.001），冷应激时为0.13±0.07 m/s（无显著性差异）。静息时股静脉直径为5.3±0.9 mm，升温时为5.1±1.0 mm（P<0.05），降温时为5.4±81.0 mm（无显著性差异）。本研究显示热应激期间直径减小。然而，由于热应激期间股静脉平均血流速度增加了一倍，股静脉血流量增加。因此，提示热应激期间皮肤血流增加的一部分通过深静脉回流。
