视网膜和脉络膜挫伤眼的血流动力学研究

目的检测视网膜和脉络膜挫伤后眼的血流动力学改变.方法采用彩色多普勒血流显像(CDFI)检测视网膜、脉络膜挫伤患眼与健眼的眼动脉(OA)、视网膜中央动脉(CRA)及睫状后动脉(PCAs)血流参数,测定收缩期血流峰值速度(PSV),缩张末期流速(EDV),搏动指数(PI),阻力指数(RI). 结果视网膜、脉络膜挫伤患眼的视网膜中央动脉(CRA)及睫状后动脉(PCAs)收缩期血流峰值速度(PSV),缩张末期流速(EDV),搏动指数(PI)及阻力指数(RI)与健眼比较差异有显性(P＜0.05);视网膜、脉络膜挫伤患眼的眼动脉(OA)与健眼比较差异无显性(P＞0.05).结论视网膜、脉络膜挫伤可使眼视网膜中央动脉(CRA)及睫状后动脉(PCAs)血流速度低于健眼,阻力指数(RI)增加,为临床对眼外伤的诊治和预后判断提供重要依据.

Application of color doppler blood flow imaging (CDFI) in the study of hemodynamics of retinal and choroidal rupture

Objective To determine the changes of hemodynamics caused by retinal and choroidal rupture. Methods CDFI was applied to determine the flow parameters of the ophthalmic artery (OA), central retinal artery (CRA) and posterior ciliary arteries (PACs) of the affected, by retinal and choroidal rupture, and unaffected eyes. The peak systolic velocity (PSV), end diastolic velocity (EDV), pulsation index (PI) and resistance index (RI) were measured. Results There was a significant difference (P<0.05) between the affected by the retinal and choroidal rupture and unaffected eyes of PSV, EDV, PI and RI in the CRA and PACs. No significant difference (P>0.05) was observed in the OA of the affected eye by the retinal and choroidal rupture in comparison with the unaffected. Conclusion The flow velocity in the CRA and PCAs of the affected eye by retinal and choroidal rupture was reduced comparing to that of the unaffected eye, and also the RI was increased. CDFI is used for determining the changes of the flow velocity and RI which serves as an important indicator for the diagnosis, treatment and the prognostic value of ocular injury.