Endovascular treatment of distal medium vessel occlusions
Antonio Ciacciarelli1, Umberto Pensato2,3, Johanna Maria Ospel4
1Emergency Department, Policlinico Umberto I, Sapienza University of Rome.
Insights
Endovascular treatment (EVT) for distal medium vessel occlusions (DMVO) stroke shows neutral results, but research is ongoing. Future strategies may improve outcomes for carefully selected patients with DMVO.
Area of Science:
- Neuroscience
- Interventional Neurology
- Vascular Neurology
Background:
- Acute ischemic stroke from large vessel occlusion (LVO) is effectively treated with endovascular treatment (EVT).
- Distal medium vessel occlusions (DMVO) account for one-third of ischemic strokes, with poor outcomes from medical management alone.
- Current medical management for DMVO stroke results in significant disability and mortality.
Purpose of the Study:
- To review clinical, anatomical, and imaging features of DMVO stroke.
- To discuss recent EVT trial results for DMVO and their interpretation.
- To outline future directions for reperfusion strategies in DMVO stroke.
Main Methods:
- Review of recent randomized trials on EVT for DMVO stroke.
- Analysis of clinical data, anatomical considerations, and imaging features of DMVO.
- Synthesis of current evidence and future research directions.
Main Results:
- Recent randomized trials for EVT in DMVO stroke have shown overall neutral results.
- Trials provided insights into patient subgroups who may benefit from EVT.
- Key challenges in improving management for DMVO patients were identified.
Conclusions:
- Current evidence does not support routine EVT for DMVO stroke.
- The field of EVT for DMVO is rapidly evolving.
- Advances in device technology, patient selection, and trial design offer future promise for selected DMVO patients.
Purpose Of Review:
Endovascular treatment (EVT) has dramatically improved outcomes of patients suffering from acute ischemic stroke due to large vessel occlusion (LVO), becoming the standard of care. However, up to one-third of ischemic strokes are caused by distal medium vessel occlusions (DMVO), which are beyond the LVO territory. Medical management, including intravenous thrombolysis, leaves more than half of DMVO patients disabled at 3 months, with mortality exceeding 10%. In face of this grim prognosis, expanding EVT to DMVO has gained considerable interest. This review summarizes the clinical, anatomical, and imaging features of DMVO stroke, discusses recent EVT trial results and their interpretation, and outlines future directions for establishing safe and effective reperfusion strategies in this population.
Recent Findings:
Recent randomized trials investigating EVT for DMVO stroke yielded neutral results overall. However, they provided important insights about patient subgroups likely to benefit from intervention and set key challenges to improving the management of patients with DMVO.
Summary:
While current evidence does not support routine EVT for DMVO stroke, the field is evolving rapidly. Ongoing advances in device technology, patient selection, and trial design hold promise for refining treatment and improving outcomes in carefully selected patients.
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