正常人足趾甲襞微循环检测

Detection on Toe Nailfold Microcirculation of Healthy People

目的:通过检测正常人足趾甲襞微血管,分析国人正常足趾甲襞微循环形态、流态和袢周状态的特点,为临床足趾甲襞微血管的评价提供依据。方法:用微循环检测仪及其图像分析系统,观测正常人双足趾甲襞微血管形态、流态、袢周指标。结果:正常人双足趾甲襞各项指标检查结果无明显差异,其中管袢数目和长度范围分别在4.33～5.67条/mm和70.94～155.92μm之间;输入支管径、输出支管径和袢顶直径范围分别在5.50～10.50μm、8.03～12.41μm和7.64～12.66μm之间。84.61%的正常人双足趾血流速度≥400μm/s,15.39%的血流速度在300～399μm/s之间;88.46%的正常人双足趾红细胞聚集和渗出为无或轻度,11.54%的红细胞聚集和渗出为中度;所有正常人双足趾的血管运动性为0～4次/min,乳头下静脉丛≤2排,皮肤乳头为波纹状或浅波纹状,且均未见白微栓和出血。结论:足趾是活体微循环观测的良好部位,其左、右足趾微血管形态、微血流流态、微血管袢周状态无明显差异。

Objective：To observe the morphology,flow state and periphery of toe nailfold microvessels in healthy volunteers.Method：The indox of toe nailfold microciroulation was detected by ZL104 microcirculatory microscopy with image analysis system.Results：There was no significant difference in the number,the length and the diameter of nailfold microvessels between the right and the left toes.The number of microvessles was from 4.33 to 5.67/mm,and the microvascular length was from 70.94 to 155.92μm.The ranges of the input and output branches,the top diameter of microvessles were respectively 5.50~10.50μm,8.03~12.41μm and 7.64~12.66μm.The blood velocity of 84.61% healthy subjects was ≥400μm/s and that of 15.39% was between 300～399μm/s.Mean while,the images of 88.46% healthy subjects showed no or mild erythrocyte aggregation and effusion,and the images of 11.54% showed moderate aggregation and effusion.The frequency of the microvascular contract in all subjects was 0~4 times per min.All subjects had less than 2 lines of the venous plexus under the nipple.White microembolus and bleeding weren＇t found in all subjects.Conclusion：Toe is an appropriate position for intravital microvessel observation.There is no significant difference in morphology,flow state and periphery of nailfold microvessels between the right and left toes.