Endovascular Treatment Strategies for Acute Ischemic Stroke Management

Acute ischaemic stroke, resulting from occlusion of a major cerebral artery, represents a leading cause of mortality and long-term disability worldwide. Rapid restoration of blood flow to the ischaemic penumbra is the primary objective of treatment, and endovascular therapy has emerged as the most effective approach for large vessel occlusions. Current practice integrates advanced imaging for patient selection, aiming to identify salvageable tissue and robust collateral circulation. Mechanical thrombectomy using stent-retriever devices or direct aspiration catheters enables targeted removal of occlusive thrombi, often within a tight therapeutic window of six to eight hours from symptom onset, with selected patients benefiting up to 24 hours based on perfusion imaging.

Optimisation of workflow metrics—from emergency medical services notification through imaging, groin puncture and reperfusion—has proven critical to improving clinical outcomes. Adjunct strategies such as balloon guide catheters, combined aspiration and retrieval techniques, and refined guidance by real-time imaging all contribute to higher rates of successful reperfusion. Moreover, individual patient factors including age, baseline stroke severity and collateral status influence the likelihood of functional recovery, underscoring the importance of tailored decision-making. Beyond acute recanalisation, comprehensive stroke care encompasses secondary prevention, rehabilitation and management of procedure-related complications, thereby extending the impact of endovascular interventions on global healthcare systems.

Research from Nature Portfolio

Recent analyses have demonstrated that achieving complete reperfusion, rather than partial restoration of flow, is associated with markedly better functional outcomes and reduced infarct expansion. In a cohort of anterior circulation stroke patients treated with mechanical thrombectomy, those attaining the highest grade of the modified Thrombolysis in Cerebral Infarction (mTICI) scale showed significantly greater likelihood of independent recovery at 90 days and less growth of the ischaemic core on follow-up imaging. These findings have prompted calls to refine procedural goals, advocating that success be redefined to require full reperfusion rather than the previously accepted threshold of partial restoration.

Endovascular Treatment Strategies for Acute Ischemic Stroke Management publication trend

The graph below shows the total number of articles in endovascular treatment strategies for acute ischemic stroke management across all publications each year (not limited to Nature Index journals).

Technical terms

Endovascular therapy: A minimally invasive procedure to restore blood flow by navigating catheters through blood vessels to a cerebral occlusion.

Mechanical thrombectomy: A technique that employs specialised devices, such as stent retrievers or aspiration catheters, to physically remove thrombus from an occluded artery.

Modified Thrombolysis in Cerebral Infarction (mTICI) score: An angiographic grading system that quantifies the degree of cerebral reperfusion achieved after endovascular treatment, ranging from no perfusion to complete reperfusion.

Large vessel occlusion: Blockage of a major intracranial artery, typically in the anterior circulation (internal carotid or middle cerebral artery), which is amenable to endovascular intervention.

References

1. Endovascular Treatment with Stent-Retriever Devices for Acute Ischemic Stroke: A Meta-Analysis of Randomized Controlled Trials. PLOS ONE (2016).
2. MR CLEAN-NO IV: intravenous treatment followed by endovascular treatment versus direct endovascular treatment for acute ischemic stroke caused by a proximal intracranial occlusion—study protocol for a randomized clinical trial. Trials (2021).
3. Complete reperfusion is required for maximal benefits of mechanical thrombectomy in stroke patients. Scientific Reports (2017).