Involvement of both MCA and PCA territories with visual memory deficits is most consistent with which stroke?

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Multiple Choice

Involvement of both MCA and PCA territories with visual memory deficits is most consistent with which stroke?

Visual memory relies on networks across the occipital-temporal areas supplied by the posterior cerebral artery and on parietal-temporal regions influenced by the middle cerebral artery. When both territories are damaged, particularly on the right side, the brain regions needed to encode and retrieve nonverbal, visuospatial information are affected, leading to visual memory deficits. Left hemisphere MCA-PCA involvement would more likely disrupt language and verbal memory, while a right PCA stroke alone tends to cause neglect and visual-field issues without the broader cross-territory memory impairment. Basilar artery stroke produces brainstem and cerebellar signs rather than this specific pattern. Therefore, the right MCA-PCA stroke best fits the presentation.

Visual memory relies on networks across the occipital-temporal areas supplied by the posterior cerebral artery and on parietal-temporal regions influenced by the middle cerebral artery. When both territories are damaged, particularly on the right side, the brain regions needed to encode and retrieve nonverbal, visuospatial information are affected, leading to visual memory deficits. Left hemisphere MCA-PCA involvement would more likely disrupt language and verbal memory, while a right PCA stroke alone tends to cause neglect and visual-field issues without the broader cross-territory memory impairment. Basilar artery stroke produces brainstem and cerebellar signs rather than this specific pattern. Therefore, the right MCA-PCA stroke best fits the presentation.

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