彩色多普勒对视网膜静脉阻塞血流动力学分析

Analysis of the hemodynamics in retinal vein occlusion by color Doppler imaging

目的 探讨视网膜静脉阻塞（ＲＶＯ） 血流动力学改变。 方法 经散瞳眼底检查及眼底荧光血管造影确诊为ＲＶＯ 病例５２ 例，健康对照组５２ 例，使用Ａｃｕｓｏｎ １２８ ＸＰ／１０ 型彩色电脑声像仪，测定了视网膜中央动脉（ＣＲＡ） 、中央静脉（ＣＲＶ） 及眼动脉（ＯＡ） 的收缩期最大血流速度（Ｖｍａｘ） 、舒张期末最小血流速度（Ｖｍｉｎ） 及阻力指数（ＲＩ） 。 结果 ＲＶＯ 患者ＣＲＶ 的Ｖｍａｘ 及Ｖｍｉｎ 均明显低于健眼（ Ｐ＜ ０ ．０５ ，Ｐ＜ ０ ．０１） 。ＲＶＯ 患眼ＣＲＡ、ＣＲＶ 及ＯＡ 的Ｖｍａｘ 和Ｖｍｉｎ 明显低于对照组（ Ｐ＜ ０ ．０５ ，Ｐ＜ ０ ．０１） 。ＲＶＯ 健眼ＣＲＡ 的Ｖｍｉｎ ，ＯＡ 的Ｖｍａｘ 和Ｖｍｉｎ 明显低于对照组（ Ｐ＜ ０ ．０５ ，Ｐ＜ ０ ．０１） 。 结论 ＣＲＶ和ＯＡ 异常的血流动力学是ＲＶＯ

ObjectiveTo investigate the changes of hemodynamics in retinal vein occlusion(RVO).Methods52 patients were determined as RVO by fundus examination and fluorescein angiography,52 healthy patients were as control.They were investigated by Acuson 128 color Doppler imaging.The Vmax,Vmin and resistive index(RI) of central retinal artery(CRA),central retinal vein(CRV) and ocular artery(OA) were measured.ResultsThe values of Vmax and Vmin in patients with RVO were significantly lower than that of control( P<0.05 , P<0.01 ).The Vmax and Vmin of CRA,CRV and OA in experimental group was markedly lower than that of control subjects( P<0.05 , P<0.01 ).The values of Vmin in CRA,Vmax and Vmin in OA were significantly lower in RVO unaffected eyes compared with the control eyes( P<0.05 , P< 0.01 ).ConclusionAbnormal hemodynamics of CRA and OA is the clinical base for the occurrence of RVO.