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Multicenter Study
. 2022 Nov;14(11):1096-1101.
doi: 10.1136/neurintsurg-2021-017972. Epub 2021 Nov 5.

Patient and aneurysm factors associated with aneurysm recanalization after coiling

Laurent Pierot  1 , Coralie Barbe  2 , Aurore Thierry  3 , Fouzi Bala  4 , Francois Eugene  5 , Christophe Cognard  6 , Denis Herbreteau  7 , Stéphane Velasco  8 , Emmanuel Chabert  9 , Hubert Desal  10 , Mohamed Aggour  11 , Christine Rodriguez-Regent  12 , Sophie Gallas  13 , Jacques Sedat  14 , Gaultier Marnat  15 , Nader Sourour  16 , Arturo Consoli  17   18 , Chrysanthi Papagiannaki  19 , Laurent Spelle  20   21 , Phil White  22   23
Affiliations
Multicenter Study

Patient and aneurysm factors associated with aneurysm recanalization after coiling

Laurent Pierot et al. J Neurointerv Surg. 2022 Nov.

Abstract

Background: One limitation of the endovascular treatment of intracranial aneurysms is aneurysm recanalization. The Analysis of Recanalization after Endovascular Treatment of intracranial Aneurysm (ARETA) study is a prospective multicenter cohort study evaluating the factors associated with recanalization after endovascular treatment.

Methods: The current analysis is focused on patients treated by coiling or balloon-assisted coiling (BAC). Postoperative, mid-term vascular imaging, and evolution of aneurysm occlusion were independently evaluated by two neuroradiologists. A 3-grade scale was used for aneurysm occlusion (complete occlusion, neck remnant, and aneurysm remnant) and for occlusion evolution (improved, stable, and worsened). Recanalization was defined as any worsening of aneurysm occlusion.

Results: Between December 2013 and May 2015, 16 French neurointerventional departments enrolled 1289 patients. A total of 945 aneurysms in 908 patients were treated with coiling or BAC. The overall rate of aneurysm recanalization at mid-term follow-up was 29.5% (95% CI 26.6% to 32.4%): 28.9% and 30.3% in the coiling and BAC groups, respectively. In multivariate analyses factors independently associated with recanalization were current smoking (36.6% in current smokers vs 24.5% in current non-smokers (OR 1.8 (95% CI 1.3 to 2.4); p=0.0001), ruptured status (31.9% in ruptured aneurysms vs 25.1% in unruptured (OR 1.5 (95% CI 1.1 to 2.1); p=0.006), aneurysm size ≥10 mm (48.8% vs 26.5% in aneurysms <10 mm (OR 2.6 (95% CI 1.8 to 3.9); p<0.0001), wide neck (32.1% vs 25.8% in narrow neck (OR 1.5 (95% CI 1.1 to 2.1); p=0.02), and MCA location (34.3% vs 28.3% in other locations (OR 1.5 (95% CI 1.0 to 2.1); p=0.04).

Conclusions: Several factors are identified by the ARETA study as playing a role in aneurysm recanalization after coiling: current smoking, aneurysm status (ruptured), aneurysm size (≥10 mm), neck size (wide neck), and aneurysm location (middle cerebral artery). This finding has important consequences in clinical practice.

Trial registration number: URL: http://www.

Clinicaltrials: gov; Unique Identifier: NCT01942512.

Keywords: aneurysm.

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Conflict of interest statement

Competing interests: LP: Support for the present manuscript from the French Ministry of Health (institutional); Consulting fees from Balt, Microvention, Perflow, Phenox, Vesalio; Payment or honoraria for lectures, presentations, speakers bureaus, manuscript writing or educational events from Balt, Microvention, Perflow, Phenox; Support for attending meetings and/or travel from Balt, Microvention, Phenox. CC: Payment or honoraria for lectures, presentations, speakers bureaus, manuscript writing or educational events from Medtronic, Microvention, MIVI, Stryker. MA: Grants or contracts from Medtronic, Cerenovus, Balt, Cerus, Stryker; Consulting fees from Medtronic, Cerenovus, Balt, Cerus, Stryker; Payment or honoraria for lectures, presentations, speakers bureaus, manuscript writing or educational events from Medtronic, Cerenovus, Balt, Cerus, Stryker; Payment for expert testimony from Cerenovus; Support for attending meetings and/or travel from Medtronic, Cerenovus, Balt, Cerus, Stryker; Participation to DSMB or AB from Cerenovus. GM: Payment or honoraria for lectures, presentations, speakers bureaus, manuscript writing or educational events from Medtronic, Microvention. NS: Consulting fees from Medtronic, Balt; Support for attending meetings and/or travel from Balt, Cerus, Stryker. CP: payment or honoraria for lectures, presentations, speakers bureaus, manuscript writing or educational events from Microvention. LS: Grants or contracts from Philips (institutional); Consulting fees from Balt, Medtronic, Phenox, Microvention, Stryker; Payment or honoraria for lectures, presentations, speakers bureaus, manuscript writing or educational events from Medtronic, Balt, Microvention, Stryker; Support for attending meetings and/or travel from Balt, Medtronic, Microvention, Stryker. PW: Support for the present manuscript from the French Ministry of Health (institutional); Grants or contracts from Medtronic, Stryker, Penumbra (institutional); Consulting fees from Microvention-Terumo; Participation to DSMB or AB from Mr-Clean Direct, TENSION, Protect-U. PW is a chairperson for UK Neurointerventional group and JNIS associate editor.

Figures

Figure 1
Figure 1
Flow chart of the study population.
See this image and copyright information in PMC

References

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