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  • Title: Superficial Temporal Artery Trunk-to-Middle Cerebral Artery Bypass with Short Radial Artery Interposition Graft for Symptomatic Internal Carotid Artery Occlusion.
    Author: Chen C, Wei L, Li M, Ling C, Luo L, Guo Y, Li Z, Guo Y, Wang H.
    Journal: World Neurosurg; 2019 Jul; 127():e268-e279. PubMed ID: 30898742.
    Abstract:
    OBJECTIVE: We investigated the use of high-flow superficial temporal artery trunk-to-radial artery-to-middle cerebral artery (STAt-RA-MCA) bypass to prevent ischemic stroke in patients with symptomatic internal carotid artery occlusion (SICAO). METHODS: We retrospectively analyzed the data from patients with SICAO who had undergone high-flow STAt-RA-MCA bypass in our center from October 2014 to November 2017. The incidence of ischemic stroke, changes in cerebral blood flow, characteristics of perioperative complications, and related factors determining the blood flow rate in the graft were analyzed. RESULTS: From October 2014 to November 2017, we treated 21 patients with SICAO using high-flow STAt-RA-MCA bypass. A total of 42 ischemic stroke events had been reported within 6 months before surgery. The ipsilateral/contralateral mean transit time (I/C MTT) ratio before surgery was 1.24 ± 0.10 (range, 1.14-1.51). During a median follow-up period of 692 days (range, 212-1114), 3 transient ischemic attacks occurred in 3 patients; 18 patients (85.7%) did not experience recurrent stroke. The patency rate of the bypass graft was 95.2% (20 of 21). The I/C MTT ratio was 1.06 ± 0.11 on postoperative day 1 in all patients and was significantly different from the preoperative I/C MTT ratio (P < 0.001). The surgical complication rate was 9.5% (2 of 21), and no reoperation was required. CONCLUSION: Our results suggest that high-flow STAt-RA-MCA bypass can effectively reduce the risk of stroke in patients with SICAO. Moreover, the surgical procedure is a highly safe procedure. Further randomized controlled studies are required to draw more precise conclusions.
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