QuestionSBA
QuestionChoice
Although contralateral homonymous hemianopia can be caused by MCA stoke, this is a less common finding. Visual deficits would be more commonly associated with posterior circulation strokes, as these can cause infarction of the visual cortex in the occipital lobe. The weakness and sensory loss would affect the right side, as the primary motor and somatosensory cortices control the contralateral side of the body.
10004600
e
Weakness and sensory loss in the left arm and face and visual deficits
QuestionChoice
The lower limb is most often spared in MCA strokes, as according to the cortical homunculus, the area of primary motor and somatosensory cortices representing the lower limb is supplied by the anterior cerebral artery.
10004598
c
Weakness and sensory loss in the right arm, face and lower limb
QuestionChoice
The left middle cerebral artery (MCA) supplies the parts of the motor and somatosensory cortices representing the right arm and face, so infarction here causes upper motor neuron signs in these areas. Aphasia most commonly occurs due to damage to either Broca’s area, Wernicke’s area or both. These areas are both supplied by the left MCA, and therefore are likely to be damaged in this patient.
10004596
a
Weakness and sensory loss in the right arm and face (excluding forehead) and aphasia
QuestionChoice
The primary motor and somatosensory cortices control the contralateral side of the body. This means that a stroke affecting the left MCA causes infarction to parts of the left primary motor and somatosensory cortices, and therefore the right side of the body is affected.
10004599
d
Weakness and sensory loss in the left arm and face (excluding forehead) and aphasia
QuestionChoice
Weakness to the forehead muscles occurs due to lower motor neuron lesions, for example in Bell’s palsy. The forehead muscles are spared in unilateral upper motor neuron lesions, such as left MCA stroke. This is due to their bilateral cortical representation, meaning that the alternative pathway can still provide innervation.
10004597
b
Weakness and sensory loss in the face (including the forehead)
Concept
Chapter
2693
3743
Ischaemic Stroke
Topic
141
Neurology
13466
A 71-year-old man has experienced a left middle cerebral artery infarct.

Which of the following are the most likely set of clinical findings upon examination of this patient?
a