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Updated: Nov 21, 2025

Author Spotlight: Assessing Ischemic Stroke Damage Through Middle Cerebral Artery Occlusion Model
Published on: August 11, 2023
[Embolic stroke of undetermined source]
O I Vinogradov1, M A Jablonskij2, A N Kuznecov1
1Pirogov National Medical and Surgical Center, Moscow, Russia.
Cryptogenic stroke, often embolic stroke of undetermined source (ESUS), affects 20-40% of ischemic stroke survivors. Anticoagulants may offer better secondary prevention for ESUS patients than antiplatelet drugs, though specific treatments are still needed.
Area of Science:
- Neurology
- Cardiology
- Vascular Medicine
Background:
- A significant percentage of ischemic stroke survivors remain without a clear etiological classification, termed cryptogenic stroke.
- The majority of these cryptogenic strokes are presumed to be embolic in origin.
- Embolic stroke of undetermined source (ESUS) is a defined subtype, characterized by non-lacunar brain infarcts lacking identified proximal arterial stenosis or cardioembolic origins.
Purpose of the Study:
- To explore the characteristics and potential therapeutic strategies for patients diagnosed with embolic stroke of undetermined source (ESUS).
- To evaluate the potential benefits of different secondary prevention methods in ESUS patients.
Main Methods:
- Review of diagnostic evaluations for ischemic stroke survivors.
- Definition and characterization of the embolic stroke of undetermined source (ESUS) cohort.
- Comparison of potential secondary prevention strategies, including anticoagulants versus antiplatelet agents.
Main Results:
- Embolic stroke of undetermined source (ESUS) patients are typically younger with less disability and a more favorable prognosis compared to other stroke subtypes.
- Anticoagulant therapy is hypothesized to be more advantageous than antiplatelet therapy for secondary prevention in ESUS.
Conclusions:
- Embolic stroke of undetermined source (ESUS) represents a distinct clinical entity within ischemic stroke.
- Further research and development of specific treatment and secondary prevention guidelines for ESUS are warranted.
- The potential superiority of anticoagulants over antiplatelet agents in ESUS requires further investigation and clinical validation.
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