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Poor outcome after lateral medullary infarcts.
Neurology
|November 1, 1986
Summary
Recurrent brainstem ischemia, including lateral medullary infarcts and transient ischemic attacks (TIAs), occurred in two patients with bilateral vertebral artery disease. This severe vertebrobasilar stenosis and occlusion led to significant neurological deficits.
Area of Science:
- Neurology
- Vascular Neurology
- Neuroscience
Background:
- Lateral medullary infarcts can be associated with vertebrobasilar system disease.
- Recurrent ischemic events in the brainstem pose significant diagnostic and therapeutic challenges.
Observation:
- Two patients presented with lateral medullary infarcts followed by recurrent brainstem ischemia.
- One patient experienced transient ischemic attacks (TIAs) sensitive to posture, while the other developed TIAs progressing to quadriparesis.
Findings:
- Both patients exhibited bilateral vertebral artery disease: unilateral intracranial vertebral artery occlusion and contralateral severe stenosis.
- This severe bilateral vertebral artery disease is a significant risk factor for recurrent ischemic events in the brainstem.
Implications:
- Understanding the mechanisms of clot propagation or embolization from occluded vertebral arteries is crucial.
- Reduced blood flow due to contralateral vertebral artery stenosis can precipitate further ischemic events.
- Aggressive management of bilateral vertebral artery disease is warranted to prevent severe neurological deficits.