32. Pheochromocytoma Quiz

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Questions and Answers

Which of the following is a characteristic of pheochromocytomas?

  • They are the most common cause of hypertension
  • They rarely spread to other organs
  • They are derived from chromaffin tissue (correct)
  • They occur exclusively in the adrenal medulla

What percentage of pheochromocytomas are malignant and tend to spread to the liver?

  • More than 50%
  • 15% to 20%
  • 25% to 50%
  • Less than 15% (correct)

Which of the following is NOT a part of the multiglandular-neoplastic syndrome known as multiple endocrine adenoma type IIa?

  • Parathyroid adenoma or hyperplasia
  • Adrenal medullary sympathetic hormone excess (correct)
  • Pheochromocytoma
  • Medullary carcinoma of the thyroid

Which of the following symptoms may be suggestive of pheochromocytoma before surgery or procedures?

<p>Excessive sweating (D)</p> Signup and view all the answers

What is the value of preoperative and preprocedure adrenergic receptor blocking drugs?

<p>They reduce the risk of malignant hypertension (A)</p> Signup and view all the answers

Which receptor blockade is recommended for all patients with active tumors?

<p>α-adrenergic receptor blockade (C)</p> Signup and view all the answers

What is the criteria for assessing the adequacy of treatment for pheochromocytoma before surgery?

<p>No in-hospital arterial blood pressure reading higher than 165/90 mm Hg should be evident for 48 hours preoperatively (B)</p> Signup and view all the answers

Which of the following is a key component of ideal patient care for individuals with pheochromocytoma?

<p>Optimal preoperative preparation (D)</p> Signup and view all the answers

What can cause an exaggerated stress response in patients with pheochromocytoma?

<p>Painful or stressful events such as intubation (A)</p> Signup and view all the answers

What can result in significantly elevated blood catecholamine levels in patients with pheochromocytoma?

<p>Infarction of a tumor (D)</p> Signup and view all the answers

What is the recommended treatment for hemodynamic rescue in catecholamine-resistant vasoplegic shock after resection of a massive pheochromocytoma?

<p>Vasopressin (D)</p> Signup and view all the answers

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