Objective: To compare the embolization outcomes and complications of the LEO Baby and Neuroform Atlas stents in the endovascular treatment of intracranial wide-neck aneurysms.
Methods: We identified patients with intracranial aneurysms treated with LEO Baby (n = 163) or Atlas (n = 65) stent-assisted coiling between October 2018 and February 2023. A retrospective analysis of demographics, aneurysm characteristics, embolization outcomes, and procedure-related complications was performed. Propensity score matching analysis with a ratio of 1:2 was used to balance the patient selection bias that existed between the 2 cohorts.
Results: Compared to the Atlas cohort, the LEO Baby cohort had a higher rate of immediate successful embolization (95.6% vs. 78.5%, P < 0.001) and a lower rate of incomplete embolization at midterm follow-up (4.0% vs. 18.6%, P = 0.006), but there was no significant difference for either after matching for a 1:2 propensity score (P = 0.091 and P = 0.081, respectively). Procedure-related complications were 10.4% (17/163) in the LEO Baby cohort and 7.7% (5/65) in the Atlas cohort. At midterm angiographic follow-up, recanalization occurred in 0.8% (1/124) of the LEO Baby cohort and 4.7% (2/43) of the Atlas cohort. Complication and recanalization rates for both stents were not statistically different before (P = 0.701 and P = 0.332, respectively) and after (P > 0.999 and P > 0.999, respectively) propensity score matching.
Conclusions: Both LEO Baby and Atlas are safe and effective in the treatment of intracranial aneurysms, and they are similar in terms of aneurysm embolization outcomes and complication rates.
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