彩色多普勒超声监测斜视手术对眼血流动力学影

目的 :探讨斜视手术对眼血流动力学影响 ,评价多普勒超声监测眼动脉血供的临床价值。方法 :筛选斜视患者 51例 51只眼行 1或 2条水平直肌后徙 -截腱术。术前、术后 1周、 1个月分别用彩色多普勒超声诊断仪测量眼动脉 (OA)、睫状后动脉 (PCA)、视网膜中央动脉 (CRA)的收缩期血流速度峰值 (Vs)、舒张末期血流速度 (Vd)及阻力指数 (RI) ,比较血流改变并与 3 0例正常人对照。结果 :1.斜视眼术前患眼 OA、 PCA、 CRA血流参数与正常组比较无显著性意义 (P>0 .0 5) ;2 .斜视眼术后 1周眼动脉 Vs明显升高、 PI、 RI升高 (P<0 .0 5) ;3 .斜视眼术后 1个月 OA、PCA、 CRA各血流参数与术前比较 ,无显著性意义 (P>0 .0 5)。结论 :手术可以引起短期眼组织缺血 ,但随着手术激惹的消失及广泛侧枝循环的建立 ,1条或 2条水平直肌截断手术不会引起眼前节缺血 ,多普勒超声是评价眼血流动力学变化的敏感方法

Study on Hemodynamic Changes of the Ophthalmic Artery with Color Doppler Ultrasonography after Strabismus Surgery

Objective:To investigate the blood fl ow changes in ophthalmic artery(OA),posterior ciliary artery(PCA) and central reti nal artery(CRA) with color Doppler ultrasonography after strabismus surgery Methods:Fifty-one eyes of 51 patients who underwent rede ssion-resection surgery on one or two horizontal rectus muscles were examined using color Doppler ultrasonography preoperatively and 1 week,1 month postoperat ively The systolic maximum velocity,end-diastolic velocity,resistance index of the OA,PCA and CRA were determined and mea surements from normal subjects were served as control data The test was perfor med Hemodynamic changes in the study group were compared to those in the contro l group and compared preoperative to postoperative Results:1 No difference in any hemodynamic parameters in the OA,PCA,CRA ( P >0 05) was observed preoperatively between the study and control groups;2 The ophthalmic artery showed a significant increase in systoli c maximum velocity and,RI 1 week postoperatively( P <0 05);3 There were no statistically significant differences( P >0 05)in velocities or resistanc e in OA,PCA,CRA 1 month postoperatively Conclusions:One or two horizontal rectus muscle operations did cause significant hemodynamic changes in the ophthalmic artery 1 week post operatively,but these changes revived normally 1 month postoperatively