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Retrospective study of endovascular treatment for sICAS shows no significant difference in 30-day stroke or death between early and delayed groups.

Retrospective study of endovascular treatment for sICAS shows no significant difference in 30-day st…
Photo by Bhautik Patel / Unsplash
Key Takeaway
Note no significant difference in 30-day stroke or death between early and delayed endovascular treatment for sICAS in this retrospective cohort.

This retrospective single-center study evaluated 174 analyzed patients with symptomatic intracranial atherosclerotic stenosis and acute cerebral infarction who underwent endovascular treatment. The population consisted of consecutive sICAS patients undergoing intervention, with comparisons based on timing: early versus delayed procedures. The setting reflected real-world practice, and the study phase was not reported.

The primary outcome assessed any stroke or death within 30 days, alongside 90-day mRS scores. Results indicated a 30-day stroke or death rate of 11.3% in the early group versus 8.3% in the delayed group, with a p-value of 0.521. For unfavorable 90-day outcomes, rates were 18.9% in the early group and 10.7% in the delayed group, with a p-value of 0.145. Neither difference reached statistical significance.

Independent factors influencing the decision on surgical timing included higher preoperative NIHSS, higher albumin-to-globulin ratio, and higher LDL. The odds ratios for these factors were 0.819, 0.149, and 0.394, respectively, with p-values of 0.027, 0.042, and 0.004. Safety data, including adverse events and tolerability, were not reported in this analysis.

Limitations inherent to the retrospective design and lack of randomization preclude causal conclusions regarding the impact of treatment timing. While the study provides real-world data, the absence of a specified comparator group and missing safety reporting restricts the ability to generalize findings or assess long-term tolerability. Clinicians should interpret these results cautiously when considering timing strategies for sICAS patients.

Study Details

Study typeCohort
EvidenceLevel 3
PublishedApr 2026
View Original Abstract ↓
ObjectiveTo determine the optimal timing of endovascular treatment for acute cerebral infarction with symptomatic intracranial atherosclerotic stenosis (sICAS) in real world practice.MethodsThis retrospective single center study enrolled consecutive sICAS patients undergoing intervention. According to the interval from symptom onset to intervention, patients were divided into early (≤14 days) and delayed (>14 days) intervention groups. Primary outcomes were any stroke or death within 30 days and the 90-day mRS score. Secondary analyses explored factors influencing surgical timing.ResultsAmong 211 eligible patients, 174 were analyzed, including 53 patients in the early intervention group and 121 patients in the delayed intervention group. The 30-day stroke or death rates were 11.3 and 8.3%, and unfavorable 90-day outcomes were 18.9 and 10.7% in the early and delayed groups (p = 0.521, 0.145). Higher preoperative NIHSS, higher albumin-to-globulin ratio, and higher LDL might be independent factors influencing the doctors’ decision on the timing of the intervention (OR = 0.819, 0.149, 0.394; p = 0.027, 0.042, 0.004). Thresholds favoring early intervention were NIHSS ≤ 3, albumin-to-globulin ratio 
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