NURS 6501: MIDTERM EXAM: Please contact Your Favorite Professor for help with   NURS 6501: Midterm Exam or any other assignment. Email: professorrobertphd@gmail.com   An adult patient is being evaluated for secondary causes of hypertension due to resistant blood pressure and an onset of high blood pressure at an earlier age. He reports no family history of hypertension. Which of the following mechanisms can cause secondary hypertension? Group of answer choices

• Increase in parathyroid hormone
• Decreased release of natriuretic peptides
• Elevated aldosterone levels
• Increased secretion of insulin

  The correct answer is Elevated aldosterone levels.   Explanation: Secondary hypertension refers to high blood pressure that is caused by an underlying condition or disease, as opposed to primary hypertension, which has no identifiable cause. Several mechanisms can lead to secondary hypertension, and elevated aldosterone levels are one of the key contributors. Here's why the other options are incorrect:

• Increase in parathyroid hormone: An increase in parathyroid hormone (PTH) can lead to hypercalcemia and bone issues, but it is not a common cause of secondary hypertension.
• Decreased release of natriuretic peptides: Natriuretic peptides are involved in fluid balance and regulation of blood pressure. While a decrease in natriuretic peptides can play a role in fluid retention, it is not typically a major cause of secondary hypertension.
• Increased secretion of insulin: Although insulin resistance and hyperinsulinemia can contribute to the development of hypertension over time (especially in metabolic syndrome), they are not considered primary mechanisms for secondary hypertension. However, this could contribute to the development of primary hypertension in the long run.

Why elevated aldosterone levels are correct:

• Elevated aldosterone causes sodium and water retention in the kidneys, which increases blood volume and leads to increased blood pressure. Conditions like primary hyperaldosteronism (Conn's syndrome) are well-known causes of secondary hypertension.

Thus, elevated aldosterone levels are a recognized mechanism for secondary hypertension, making this the correct answer.