Related Experiment Video
Updated: Nov 24, 2025
Optimized Management of Endovascular Treatment for Acute Ischemic Stroke
Published on: January 18, 2018
Outcomes after Thrombectomy for Minor Stroke: A Meta-Analysis
Xiao Wu1, Mihir Khunte1, Sam Payabvash1
1Department of Radiology and Biomedical Imaging, Yale School of Medicine, New Haven, Connecticut, USA.
Purpose:
To determine the outcomes after mechanical thrombectomy (MT) versus medical management in patients with minor stroke symptomatology.
Methods:
A meta-analysis was performed for studies reporting outcomes after MT, either as stand-alone therapy or with intravenous thrombolysis in patients with minor stroke and large-vessel occlusion.
Results:
Fourteen studies with 2134 patients met the selection criteria and were included. Two studies compared immediate thrombectomy versus best medical management (with rescue thrombectomy) and the odds ratios of excellent outcomes, good outcomes, mortality and incidence of symptomatic intracranial hemorrhage (sICH) after immediate thrombectomy versus best medical management were 1.07 (95% confidence interval [CI] 0.93-1.22%), 1.15 (95% CI 1.05-1.25), 0.65 (95% CI 0.30-1.38), and 2.89 (95% CI 0.82-10.13), respectively. Among the 8 studies that compared MT outcomes versus medical management (without thrombectomy), odds ratios of excellent outcomes, good outcomes, mortality, and incidence of sICH after MT versus medical management were 0.98 (95% CI 0.89-1.07), 0.94 (95% CI 0.89-1.00), 1.61 (95% CI 1.08-2.41), and 2.59 (95% CI 1.35-4.96), respectively. Among all 14 studies, pooled proportions of excellent outcomes, good outcomes, mortality, and sICH after thrombectomy were 58.7%, 76.2%, 6.82%, and 3.23%, respectively.
Conclusions:
Our study shows significant selection bias and heterogeneity in the literature with differences in baseline characteristics (age, stroke severity, prestroke modified Rankin Scale score, side of infarct, vessel and site of occlusion, use of intravenous thrombolysis, criteria for clinical deterioration, and selection bias for rescue MT and rates of reperfusion), emphasizing the need for a randomized controlled trial.
Insights
Mechanical thrombectomy (MT) shows potential benefits for minor strokes with large-vessel occlusion, but results vary. Further randomized controlled trials are needed due to significant heterogeneity and selection bias in current studies.
Area of Science:
- Neurology
- Interventional Neuroradiology
- Stroke Medicine
Background:
- Minor stroke patients with large-vessel occlusion (LVO) represent a significant clinical challenge.
- Optimal treatment strategies, including mechanical thrombectomy (MT) versus medical management, require further elucidation.
Purpose of the Study:
- To compare the outcomes of mechanical thrombectomy (MT) against medical management in patients experiencing minor stroke symptoms due to large-vessel occlusion.
Main Methods:
- A comprehensive meta-analysis was conducted on 14 studies involving 2134 patients.
- Studies included MT as a standalone therapy or in combination with intravenous thrombolysis.
- Outcomes analyzed included excellent/good functional outcomes, mortality, and symptomatic intracranial hemorrhage (sICH).
Main Results:
- Immediate MT showed trends towards better excellent and good outcomes compared to best medical management, but with a higher incidence of sICH.
- MT compared to medical management (without thrombectomy) demonstrated similar excellent outcomes but increased mortality and sICH rates.
- Pooled data from all MT studies indicated 58.7% excellent outcomes, 76.2% good outcomes, 6.82% mortality, and 3.23% sICH.
Conclusions:
- Significant selection bias and heterogeneity exist across studies, impacting baseline characteristics and treatment protocols.
- Variations in patient selection, reperfusion rates, and MT criteria necessitate caution in interpreting current evidence.
- A high-quality randomized controlled trial is crucial to definitively establish the efficacy and safety of MT for minor strokes with LVO.
