Abstract
Purpose
Our purpose was to assess the efficacy and safety of the pRESET LITE stent retriever (Phenox, Bochum, Germany), designed for medium vessel occlusion (MeVO) in acute ischemic stroke (AIS) patients with a primary MeVO.
Methods
We performed a retrospective analysis of the MAD MT Consortium, an integration of prospectively maintained databases at 37 academic institutions in Europe, North America, and Asia, of AIS patients who underwent mechanical thrombectomy with the pRESET LITE stent retriever for a primary MeVO. We subcategorized occlusions into proximal MeVOs (segments A1, M2, and P1) vs. distal MeVOs/DMVO (segments A2, M3-M4, and P2). We reviewed patient and procedural characteristics, as well as angiographic and clinical outcomes.
Results
Between September 2016 and December 2021, 227 patients were included (50% female, median age 78 [65–84] years), of whom 161 (71%) suffered proximal MeVO and 66 (29%) distal MeVO. Using a combined approach in 96% of cases, successful reperfusion of the target vessel (mTICI 2b/2c/3) was attained in 85% of proximal MeVO and 97% of DMVO, with a median of 2 passes (IQR: 1–3) overall. Periprocedural complications rate was 7%. Control CT at day 1 post-MT revealed a hemorrhagic transformation in 63 (39%) patients with proximal MeVO and 24 (36%) patients with DMVO, with ECASS-PH type hemorrhagic transformations occurring in 3 (1%) patients. After 3 months, 58% of all MeVO and 63% of DMVO patients demonstrated a favorable outcome (mRS 0–2).
Conclusion
Mechanical thrombectomy using the pRESET LITE in a combined approach with an aspiration catheter appears effective for primary medium vessel occlusions across several centers and physicians.
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Data availability
The data supporting this study's findings are available from the corresponding author upon reasonable request. The results of this study are reported in accordance with the Strengthening the Reporting of Observational Cohort Studies in Epidemiology guidelines.
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Wang, M., Henkes, H., Ghozy, S. et al. Use of the pRESET LITE thrombectomy device in combined approach for medium vessel occlusions: A multicenter evaluation. Neuroradiology 66, 631–641 (2024). https://doi.org/10.1007/s00234-024-03302-5
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DOI: https://doi.org/10.1007/s00234-024-03302-5