Question

A 64-year-old man comes to the emergency department due to left lower extremity weakness. The patient was asymptomatic when he went to bed the night before, but he has had difficulty standing after waking up today. He has had no headache, double vision, or back pain. Medical history is significant for hypertension, diabetes mellitus, and myocardial infarction. Left lower extremity examination shows lack of motor power, hyperreflexia and presence of Babinski sign. Right lower extremity examination is normal. An abnormality in which of the following structures is the most likely cause of this patient's symptoms? 1 Right anterior cerebral artery 2 Left posterior inferior cerebellar artery 3 left vertebral artery 4 Right middle cerebral artery

          A 64-year-old man comes to the emergency department due to left lower extremity weakness. The patient was asymptomatic when he went to bed the night before, but he has had difficulty standing after waking up today. He has had no headache, double vision, or back pain. Medical history is significant for hypertension, diabetes mellitus, and myocardial infarction. Left lower extremity examination shows lack of motor power, hyperreflexia and presence of Babinski sign. Right lower extremity examination is normal. An abnormality in which of the following structures is the most likely cause of this patient's symptoms?

1 Right anterior cerebral artery
2 Left posterior inferior cerebellar artery
3 left vertebral artery
4 Right middle cerebral artery

A 64-year-old man comes to the emergency department due to left lower extremity weakness. The patient was asymptomatic when he went to bed the night before, but he has had difficulty standing after waking up today. He has had no headache, double vision, or back pain. Medical history is significant for hypertension, diabetes mellitus, and myocardial infarction. Left lower extremity examination shows lack of motor power, hyperreflexia and presence of Babinski sign. Right lower extremity examination is normal. An abnormality in which of the following structures is the most likely cause of this patient's symptoms?

1 Right anterior cerebral artery
2 Left posterior inferior cerebellar artery
3 left vertebral artery
4 Right middle cerebral artery

Added by Ana H.

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