A client with an exacerbation of heart failure is experiencing fluid volume overload. The nurse understands that which regulator of blood pressure will most likely be secreted during this exacerbation?
1. Renin
2. Atrial natriuretic peptide (ANP)
3. Antidiuretic hormone (ADH)
4. Aldosterone
Correct Answer: 2
Rationale 1: Renin is released by the kidneys when blood pressure falls, not rises.
Rationale 2: ANP is secreted by specialized cells in the right atrium when large increases in blood volume produce excessive stretch on the atrial wall.
Rationale 3: ADH is released by the posterior pituitary gland when blood pressure falls or when the osmotic pressure of the blood increases.
Rationale 4: Aldosterone is released from the adrenal gland when blood pressure falls.
Global Rationale: ANP is secreted by specialized cells in the right atrium when large increases in blood volume produce excessive stretch on the atrial wall. Renin is released by the kidneys when blood pressure falls, not rises. ADH is released by the posterior pituitary gland when blood pressure falls or when the osmotic pressure of the blood increases. Aldosterone is released from the adrenal gland when blood pressure falls.
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