Artery of Percheron infarction as an unusual cause of coma: three cases and literature review.

Abstract:

OBJECTIVE:Stroke due to occlusion of the artery of Percheron (AOP), an uncommon anatomic variant supplying the bilateral medial thalami, may raise diagnostic challenges and cause life-threatening symptoms. Our objective here was to detail the features and outcomes in three patients who required intensive care unit (ICU) admission and to review the relevant literature. METHODS:Description of three cases and literature review based on a 1973-2013 PubMed search. RESULTS:Three patients were admitted to our ICU with sudden-onset coma and respiratory and cardiovascular dysfunctions requiring endotracheal mechanical ventilation. Focal neurological deficits, ophthalmological signs (abnormal light reflexes and/or ocular motility and/or ptosis), and neuropsychological abnormalities were variably combined. Initial CT scan was normal. Cerebral MRI demonstrated bilateral paramedian thalamic infarction, with extension to the cerebral peduncles in two patients. Consciousness improved rapidly and time to extubation was 1-4 days. All three patients were discharged alive from the hospital and two had good 1-year functional outcomes. Similar clinical features and outcomes were recorded in the 117 patients identified in the literature, of whom ten required ICU admission. CONCLUSIONS:Bilateral paramedian thalamic stroke due to AOP occlusion can be life threatening. The early diagnosis relies on MRI with magnetic resonance angiography. Recovery of consciousness is usually rapid and mortality is low, warranting full-code ICU management.

journal_name

Neurocrit Care

journal_title

Neurocritical care

authors

Zappella N,Merceron S,Nifle C,Hilly-Ginoux J,Bruneel F,Troché G,Cordoliani YS,Bedos JP,Pico F,Legriel S

doi

10.1007/s12028-014-9962-2

subject

Has Abstract

pub_date

2014-06-01 00:00:00

pages

494-501

issue

3

eissn

1541-6933

issn

1556-0961

journal_volume

20

pub_type

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