2002 年 15 巻 3 号 p. 132-136
Thirty-six patients who had undergone carotid endarterectomy (CEA) were evaluated to determine the effect of CEA on ophthalmic artery flow.
The internal carotid artery in all the patients was more than 50% stenotic at its origin. The ophthalmic artery ipsilateral to the CEA was evaluated by color Doppler flow imaging before surgery and then at one week, one month, and three months after surgery.
(1) Before CEA, 10 patients showed reversed ophthalmic artery flow. In the other 26 patients with antegrade ophthalmic artery flow, the average peak systolic flow velocity was 0.17 m/s. (2) At one week after CEA, the reversed ophthalmic artery flow was resolved in every patient. The average peak systolic flow velocity in the patients with preoperative antegrade flow rose significantly to 0.26m/s (p<0.05) . (3) At one month and three months after CEA, the average peak systolic flow velocities showed no significant change compared to the value at one week after CEA.
CEA corrected the reversed ophthalmic artery flow and increased the peak systolic flow velocity of the ipsilateral ophthalmic artery immediately after surgery.