局部温度变化对人体足甲襞微循环的影响

Effect of Part Temperature Change on the Foot Nail-fold Microcirculation

目的探讨足趾局部温度变化对足甲襞微循环（FNM）的影响。方法将受试者左足分别浸入温度为5℃、15℃、25℃、35℃、45℃的自来水内各5min，用WX．9B型微循环显微镜和LISCA激光多普勒微循环血流图像仪（LDPI）检测不同温度下FNM变化，观测对象为20名健康成人，观察指标包括管襻数目、管襻长度、管襻直径、血液灌流量。结果管襻数量在15℃-35℃范围内变化不大，当温度为5℃时，管襻数量明显减少，当温度为45℃时，管襻数量则明显增加；管襻长度和直径以25℃为准，低温时（5℃、15℃）时管襻缩短、管径变细，高温时（45℃）襻长伸长、管径变粗；灌流量主要表现为低温时灌流减少（5℃、15℃），高温时（45℃）灌流增多。结论足趾局部温度的变化对FNM有影响，临床检测FNM时，应控制检查室的温度。

Objective To explore the effect of changing toe part temperature on the the foot nail-fold micro- circulation （FNM）.Method 20 healthy adults wered observed on left nail-fold microcirculation （FNM） with poly- position microcirculatory microscope（WX-9B） and LISCA laser doppler hemoperfusion image instrument（LDPI）. The observed items were the number,the length,the diameter of capillary loops and the blood perfution value.Before observing,the left foot of 20 healthy adults were immersed in 5℃, 15℃、 25℃, 35℃, 45℃ tap water for five minutes each.Results The number of capillary loops decreased in 5 ℃ and 15 ℃, increased in 45 ℃ tap water. The shortened length and the minished diameter in 5 ℃ and 15 % comparison with 25 ℃,the lengthened length and the widened diameter in 45 ℃ tap water.The hemoperfusion amount decreased in 5 ℃ and 15 ~,increased in 45 tap water.Conclusions The changing toe part temperature affected the foot nail-fold microcircultion. It is neces- sary to control the room temperature for observing the foot nail-fold microcirculation.