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Intracranial aneurysm: anatomic factors that predict the usefulness of intraoperative angiography.

机译:颅内动脉瘤:预测术中血管造影术有用性的解剖因素。

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摘要

PURPOSE: To correlate the size and location of intracranial aneurysm with the need to reposition the aneurysm clip after intraoperative angiography. MATERIALS AND METHODS: In 199 consecutive patients with 234 clipped intracranial aneurysms, 273 intraoperative angiographic studies were retrospectively reviewed. Aneurysm size and location, determined with preoperative angiographic and surgical reports, were correlated with the frequency of clip repositioning because of parent- or branch-vessel compromise or unexpected residual aneurysm. RESULTS: Findings from intraoperative angiograms resulted in clip repositioning in 46 of 273 (16.8%) studies. Clip repositioning was statistically significantly less frequent with aneurysms of the posterior communicating (three of 52 [5.7%] studies) and anterior choroidal (none of 12 studies) arteries. High rates of clip repositioning were found in aneurysms of the superior hypophyseal artery (seven of 18 [38.9%] studies), superior cerebellar artery (three of five [60.0%]studies), and bifurcation of the internal carotid artery (three of nine [33.3%] aneurysms). In 98 conventional follow-up angiographic studies, seven (7%) false-negative cases with unsuspected aneurysm neck remnant were found. CONCLUSION: The rate of clip repositioning in aneurysms of the posterior communicating or anterior choroidal arteries was less than that at other locations (P < .05). Intraoperative angiography may not be necessary when aneurysms are at these two locations.
机译:目的:将颅内动脉瘤的大小和位置与术中血管造影后需要重新放置动脉瘤夹相关联。材料与方法:在199例连续的234例颅内夹层动脉瘤患者中,回顾性分析了273例术中血管造影研究。术前血管造影和外科手术报告确定的动脉瘤大小和位置,与由于父母或分支血管受损或意外的残留动脉瘤而导致的夹子复位频率有关。结果:术中血管造影的结果导致273项研究中的46项(16.8%)进行了夹子复位。从统计学上来说,后交通动脉瘤(52项研究中的3项[5.7%])和前脉络膜动脉(12项研究中无一项)的血管夹复位频率明显降低。在下垂体上动脉的动脉瘤(18项研究中的七项[38.9%],小脑上动脉(5项研究[50.0%]的三项)和颈内动脉分叉的患者(9项的三项)中发现了较高的夹子复位率[33.3%]动脉瘤)。在98例常规随访血管造影研究中,发现了7例(7%)假阴性病例,并伴有动脉瘤颈部残留。结论:后交通或前脉络膜动脉的动脉瘤中的夹子复位位置的比率低于其他位置(P <.05)。当动脉瘤位于这两个位置时,可能不需要术中血管造影。

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