As reported through the article titled, "efficacy of the flow re direction endoluminal device for cerebral aneurysms and causes of failed deployment" during a single-center retrospective study the angiographic and clinical data of consecutive patients treated with the fred for cerebral unruptured aneurysms from june 2020 to may 2021 the following cases were reported: ischemic infarction occurred in one patient with transient paralysis of the arm during the perioperative period.No permanent morbidity or mortality was observed.The post-procedural pru with the administration of psg was significantly decreased compared to pre-treatment pru with the administration of cpg (146 (108.8-178.3) vs 207 (153.0-225.5), p<0.01).Angiographic follow-up was performed at 3 and 6 months after the procedure, and occlusion rate and in-stent stenosis were assessed.The occlusion rate was evaluated using the o'kelly-marotta (okm) grading scale [7].Okm grading scales c and d were defined as adequate occlusion.Patients with technical failure to deploy the fred were excluded from angiographic follow-up but were included in the clinical follow-up.In-stent stenosis of greater than 50% was recorded in one patient; inadequate occlusion rate (grade a) was found in two patients at the 3 months follow-up; inadequate occlusion rate (grade b) was found in four patients at the 3 month follow-up; inadequate occlusion rate (grade b) was found in one patient at the 6 month follow-up.
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