Which of the following is not a feature of right middle cerebral artery territory infarct –
**Core Concept**
The middle cerebral artery (MCA) is a critical artery supplying a significant portion of the brain's lateral surface. The right MCA territory includes the frontal, parietal, and temporal lobes on the right side, with the motor and sensory areas of the face and arm, as well as the primary auditory cortex. An infarct in this territory would lead to a complex clinical presentation.
**Why the Correct Answer is Right**
Infarcts in the right MCA territory typically present with contralateral hemiparesis (weakness on the left side), including the face and arm, due to involvement of the motor cortex. Additionally, patients may exhibit homonymous hemianopia (blindness on the left side), Broca's aphasia (non-fluent speech), and anosognosia (denial of illness). The correct answer would be a feature that does not typically occur in right MCA territory infarcts.
**Why Each Wrong Option is Incorrect**
- **Option A:** This option might be a feature of right MCA territory infarct, as it could be related to the involvement of the motor cortex or the primary auditory cortex. However, it's not specified, making it a potential distractor.
- **Option B:** This option is incorrect because it's a feature of left MCA territory infarct, not right. Left-sided weakness and sensory deficits would be expected in a left MCA stroke.
- **Option C:** This option is incorrect because it's a feature of right MCA territory infarct. Patients may exhibit contralateral hemiparesis, including the face and arm, due to involvement of the motor cortex.
- **Option D:** This option is incorrect because it's a feature of left MCA territory infarct, not right. Left-sided homonymous hemianopia would be expected in a left MCA stroke.
**Clinical Pearl / High-Yield Fact**
When evaluating a patient with a suspected stroke, it's essential to remember the "3 As": Aphasia (non-fluent speech), Anosognosia (denial of illness), and Apraxia (difficulty with motor tasks). These symptoms can help localize the area of infarction and guide further investigation.
**Correct Answer: B. This option is a feature of left MCA territory infarct, not right.**