脑小血管病与眼底血管网络参数的相关性研究

Correlation study of cerebral small vessel disease and retinal vascular network parameters

目的利用计算机辅助的全自动眼底照相分析技术,研究脑小血管病与眼底血管网络参数的相关性。方法连续性纳入能坐位行眼底照相的脑小血管病患者80例,大动脉粥样硬化性脑梗死患者41例,比较两组患者的一般临床资料和眼底血管网络参数。同时行logistic回归分析脑小血管病患者的危险因素。结果脑小血管病组在男性比例、吸烟史发生率、血尿酸水平方面均低于大动脉粥样硬化性脑梗死组[(55%vs.75.6%);(20%vs.39%);(308.33±85.30 vs.367.79±113.60)],差异均有统计学意义(P<0.05)。脑小血管病组小静脉分支系数和不对称性指数均小于大动脉粥样硬化性脑梗死组,[(1.37±0.04 vs.1.39±0.05);(0.80±0.02 vs.0.81±0.02)],差异均有统计学意义(P<0.05)。Logistic回归分析显示,调整血管危险因素后,减小的小静脉不对称性指数与脑小血管病相关,是其危险因素(OR值=1.16,95%CI:1.05-1.38,P<0.05)。结论减小的小静脉不对称性指数与脑小血管病相关,是其危险因素,可作为其早期诊断指标。

Objective To investigate the correlation of cerebral small vessel disease with retinal vascular network parameters using fully automatic retinal image analysis of fundus photographs. Methods A total of 121 patients undertak- ing fundus photography in a sitting position were included. They were divided into either a cerebral small vessel disease group （n=80） or an artery atherosclerotic cerebral infarction group （n=41） according to their cerebral MRI findings. The clinical data and retinal vascular network parameters were compared between the two groups. We used logistic regression to analyse risk factors of the small vessel disease. Results The percentage of males, the incidence of smoking and serum uric acid level in the small vessel disease group were lower than those in the artery atherosclerotic cerebral infarction group（P 〈 0.05）. The bifurcation coefficient and asymmetry index of venule in the small vessel disease group were lower than those in the artery atherosclerotic cerebral infarction group （P 〈 0.05 ）. Logistic regression analysis showed that after adjusting vascular risk factors, decreased asymmetry index of venule was associated with cerebral small vessel disease （OR=l.16, 95% CI： 1.05-1.38, P〈 0.05）. Conclusions The decreased asymmetry index of venule is associated with small vessel disease which can be used as an early diagnotic indicator.