A 56-Year-Old Man Is Brought to the Emergency Department Due

question 402

Multiple Choice

A 56-year-old man is brought to the emergency department due to severe dizziness and difficulty walking since this morning.  He also reports a sharp, stabbing pain on the left side of his face.  The patient has had no tinnitus or hearing loss, and medical history includes type 2 diabetes mellitus and hypertension.  Blood pressure is 144/90 mm Hg and pulse is 92/min.  On physical examination, there is mild left-sided ptosis, and the left pupil is smaller than the right, but both pupils react briskly to light.  Horizontal and rotational nystagmus is present.  Sensation to pain and temperature is decreased on the left side of the face and the right trunk and limbs.  On standing, the patient has a wide base and falls to the right if unsupported.  He is unable to walk without assistance.  Which of the following is the most likely location of this patient's brain lesion?

• A)Cerebellum
• B)Left medulla
• C)Left midbrain
• D)Right medulla
• E)Right midbrain

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Definitions:

Errors

Mistakes or inaccuracies in data, calculations, or judgments that can affect the outcome or interpretation of a study or experiment.

Standard Deviation

An assessment that determines the magnitude of variation or spread across a set of data points.

Defective Computers

Computers that are faulty or have manufacturing errors, making them fail to perform as intended.

Standard Deviation

A statistic that quantifies the dispersion of a dataset relative to its mean.