Observational studyNeuroradiology2025
pEGASUS-HPC stent pusher assisted catheterization (PAC) technique in Y-stent-assisted coiling of unruptured wide-necked cerebral aneurysms.
Observational study in Neuroradiology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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13 authors.
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Abstract
objectivesTo evaluate the safety and feasibility of the pusher-assisted catheterization (PAC) technique using the pEGASUS-HPC stent pusher instead of a microwire for accessing unruptured wide-necked cerebral aneurysms during Y-stent-assisted coiling.
methodsIn this multicenter retrospective study (July 2021- June 2025), 48 unruptured wide-necked cerebral aneurysms underwent Y-stent-assisted coiling using pEGASUS HPC stents. Based on the catheterization technique, cases were assigned to either the microwire-assisted catheterization (MAC, n = 23) or the stent pusher-assisted catheterization (PAC, n = 25) group. Clinical and procedural data were analyzed to compare safety and efficacy, focusing on success rates, required catheterization time, complications, and adverse events.
resultsThe cohort had a mean age of 62.6 ± 9.8 years, with 64.3% of patients being female. In the MAC group, aneurysm catheterization was successful in all 23 cases (100%), with a mean catheterization time of 5.31 ± 1.2 min. In contrast, the PAC group achieved successful catheterization in 88% of cases (22/25), with a markedly reduced mean catheterization time of 0.82 ± 0.27 min-approximately 6.5 times faster than the conventional MAC technique (p < 0.001). Importantly, no procedure-related complications, such as perforations or dissections, were observed in either group.
conclusionIn this multicenter retrospective feasibility and safety analysis, PAC appeared to enable faster aneurysm access during Y-stent-assisted coiling without an increase in intraprocedural complications. As clinical outcomes were not assessed, these findings should be regarded as technical proof-of-concept and require confirmation in prospective, outcome-driven studies.
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