Application value of high frequency color Doppler ultrasound in carotid artery reconstruction of patients with ocular ischemic syndrome

ObjectiveTo study the value of high frequency color Doppler ultrasound in carotid artery reconstruction in patients with ocular ischemic syndrome(OIS).

MethodsA total of 50 patients with OIS who underwent carotid artery reconstruction from July 2018 to July 2019 were selected and divided into forward flow group(28 cases) and reverse flow group(22 cases) according to the direction of ophthalmic artery blood flow. The mean carotid stenosis, best corrected visual acuity and hemodynamic changes of ophthalmic artery, central retinal artery and posterior ciliary artery were compared between the two groups before and after operation.

ResultsBefore and after treatment, the average degree of carotid stenosis in the reverse flow group was higher than that in the forward flow group(P < 0.01). After treatment, the average degree of carotid stenosis in the two groups was lower than that before treatment(P < 0.01). Before treatment, the PSV of ophthalmic artery in the reverse flow group was higher than that in the forward flow group, and the PSV of posterior ciliary artery was lower than that in the forward flow group(P < 0.05 and P < 0.01). After treatment, the PSV of ophthalmic artery, posterior ciliary artery and central retinal artery in the two groups were higher than that before treatment(P < 0.01), and the PSV of ophthalmic artery and posterior ciliary artery in the forward flow group was higher than that in the reverse flow group(P < 0.05 and P < 0.01). Before and after treatment, the best corrected visual acuity in the forward flow group was higher than that in the reverse flow group(P < 0.01). After treatment, the best corrected visual acuity in the forward flow group was higher than that before treatment(P < 0.01).

ConclusionsAfter carotid revascularization, the mean carotid stenosis and hemodynamics of ophthalmic artery, central retinal artery and posterior ciliary artery in OIS patients are significantly improved, and the visual acuity in the forward flow group is significantly improved, but not in the reverse flow group. High frequency color Doppler ultrasound can accurately monitor the changes of hemodynamics of main postbulbar blood vessels before and after operation, which is helpful to grasp the improvement of patients' condition in real time.