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Chinese Journal of Interventional Radiology(Electronic Edition) ›› 2023, Vol. 11 ›› Issue (01): 35-41. doi: 10.3877/cma.j.issn.2095-5782.2023.01.007

• Neural Intervention • Previous Articles     Next Articles

Comparison of outcomes of aspiration thrombectomy and stent retriever thrombectomy in patients with acute embolic stroke due to large vessel occlusion

Lizhou Chen1, Wenhui Li1, Jun Zhu1, Xiaolu Xu2, Yuezhou Cao3, Zhenyu Jia3, Sheng Liu3,(), Haibin Shi3   

  1. 1. Department of Interventional Radiology, Yancheng Third People 's Hospital, Jiangsu Yancheng 224001
    2. Department of Neurology, Yancheng Third People 's Hospital, Jiangsu Yancheng 224001
    3. Department of Interventional Radiology, First Affiliated Hospital of Nanjing Medical University, Jiangsu Nanjing 210029, China
  • Received:2022-09-22 Online:2023-02-25 Published:2023-03-15
  • Contact: Sheng Liu

Abstract:

Objective

To compare the angiographic and clinical outcomes between aspiration thrombectomy and stent retriever thrombectomy in patients with acute embolic stroke due to emergent large vessel occlusion (ELVO) in the anterior circulation.

Methods

Data from consecutive acute ischemic stroke (AIS) patients who treated by endovascular thrombectomy using aspiration thrombectomy or stent retriever thrombectomy in our hospital between January 2021 and January 2022 were retrospectively analyzed. The primary outcome was the 90-day modified Rankin scale (mRS) score. Procedure metrics and clinical outcomes were compared between these two groups. The risk factors associated with clinical outcome were determined by using univariate and multivariate logistic regression analyses.

Results

A total of 120 patients were included for further evaluation. Among them, primary aspiration thrombectomy was performed in 46 (38.3%) patients, and primary stent retriever thrombectomy was used in 74 (61.7%) patients. Median procedure time(36 vs 46 minutes; Z = 928.5, P < 0.001) were significantly shorter in patients treated with aspiration thrombectomy. Successful recanalization rates (93.5% vs 75.7%; c2 = 6.227, P = 0.014), full recanalization rates (60.9% vs 40.5%; c2 = 4.694, P = 0.039) and good clinical outcome (mRS 0~2) (50.0% vs 31.1%; c2 =4.295, P = 0.038) were achieved in aspiration group significantly higher than those in stent retriever group. Adverse event rates, including symptomatic intracerebral hemorrhage and 90-day mortality were comparable between the two groups. Multivariable logistic regression analysis showed that aspiration thrombectomy was independently associated with good functional outcome (adjusted common odds ratio: 0.12, 95% confidence interval: 0.03~0.49, P = 0.003).

Conclusions

Among the specific patients with LVO due to acute embolic stroke, the use of aspiration thrombectomy approach compared with stent retriever thrombectomy resulted in a greater likelihood of favorable neurological outcomes. A large multicenter randomized clinical trial is warranted.

Key words: Acute stroke, Intracranial embolism, Thrombectomy, Aspiration, Stent retriever

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