Rivaroxaban Versus Aspirin in Secondary Prevention of Stroke and Prevention of Systemic Embolism in Patients With Recent Embolic Stroke of Undetermined Source (ESUS) (NAVIGATE ESUS)

Trial Purpose and Description

This is a study in patients who recently had a brain attack (stroke) and in whom no clear cause of the stroke could be identified. These strokes are likely due to a blood clot and therefore, can be called embolic stroke of undetermined source. The abbreviation is ESUS. The study will compare 2 blood thinners. Patients will be randomly assigned to either Rivaroxaban 15 mg or Aspirin 100 mg and the study is intended to show, if patients given rivaroxaban have fewer blood clots in the brain (stroke) or in other blood vessels.

Ages: 18 years and older

Gender: Both


Eligibility Criteria

Inclusion Criteria:

  • Recent ESUS (between 7 days and 6 months), defined as:
    • Recent ischemic stroke (including transient ischemic attack with positive neuroimaging) visualized by brain imaging that is not lacunar, and
    • Absence of cervical carotid atherosclerotic stenosis ≥ 50% or occlusion, and
    • No atrial fibrillation after ≥ 24-hour cardiac rhythm monitoring, and
    • No intra-cardiac thrombus on transthoracic echocardiography, and
    • No other specific cause of stroke (for example, arteritis, dissection, migraine/vasospasm, drug abuse)

Exclusion Criteria:

  • Severely disabling stroke (modified Rankin score ≥4)
  • Indication for chronic anticoagulation or antiplatelet therapy
  • Estimated glomerular filtration rate (eGFR) < 30 mL/min/1.73 m2


Bayer Healthcare Pharmaceuticals, Inc.

Dates: 08/29/2015 - 01/31/2018

Last Updated: 02/23/2016

Study HIC#: 1505015783

Get Involved

For more information about this study, contact:
Sonya Zhou
+1 203-889-7192
sonya.zhou@yale.edu

If you would prefer to contact a member of the Help us Discover team about this trial and other similar trials, please email helpusdiscover@yale.edu or call 1-877-978-8348.

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