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Medicine

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Neurology

Question
10 out of 27
 

Anterior cerebral artery occlusion can cause:



A Urinary retention

B Contralateral lower leg weakness

C Hemianesthesia of opposite side of face

D Hemianopia

Ans. B

Contralateral lower leg weakness

Anterior cerebral artery (ACA) – It is one of the terminal branch of internal carotid artery. It supplies the entire medial surface of cerebral hemispheres including a strip of cortex for about 2 cm along the superolateral surface.

Recurrent artery of Heubner Qis an important branch of ACA and its involvement causes faciobrachial monoplegia.

Occlusion of anterior cerebral artery

It is usually well tolerated because of collateral flow, esp in case of occlusion of proximal segment.

If both A2 Segments arise from a single anterior cerebral stem, the occlusion affects both hemisphere.

Sign & Symptoms

Structures involved

1). Paralysis of opposite foot & leg

Motor leg area

2). Cortical sensory loss over foot & leg

Sensory area for foot & leg

3). Urinary incontinence

Sensorimotor area in paracentral lobule

4. Abulia, slowness

Cingulate gyrus & medial inferior portion of frontal, parietal & temporal

5). Gait ataxia

Frontal cortex near leg motor area

6). Paraparesis

B/L motor leg area due to occlusion of single origin of A2 Seg.

Neurology Flashcard List

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