A 68-year-old male presents with confusion, left-sided hemiparesis, and decreased muscle tone to the right side of his face. You administer oxygen, start an IV, and begin transport to the hospital. En route, the patient becomes more coherent and slowly regains use of his left arm. These findings are MOST suggestive of:
A. permanent injury to the left side of the brain.
B. temporary ischemia to the right side of the brain.
C. an impending massive stroke within 24 hours.
D. a transient infarct to the right side of the brain.
Answer: B. temporary ischemia to the right side of the brain.
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