A 25-year-old woman comes to the physician with a 3-month history of weight loss, irr tability, insomnia, and palpitations

A 25-year-old woman comes to the physician with a 3-month history of weight loss, irr tability, insomnia, and
palpitations. Her past medical history is insignificant. She is not currently taking any medications. The patient
does not use tobacco, alcohol, or illicit drugs. Blood pressure is 155170 mm Hg and pulse is 110/min. Physical
examination shows lid retraction, dry skin, and fine tremor of the hands. Which of the following is the most likely cause of this patient s hypertension?

  • Q A. Elevated serum calcium level
  • 0 B. Increased myocardial contractility
  • 0 C. Increased peripheral vascular resistance
  • 0 D. Increased synthesis of catecholamines
  • E. Nocturnal hypoventilation

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