Correct Answer: A

Rationale: The correct nursing intervention for a patient with fluid volume overload is to restrict fluid intake. This helps to prevent further fluid accumulation in the body. Monitoring intake and output (choice B) is important to assess the patient's fluid balance but is not a direct intervention to address fluid volume overload. Administering diuretics as prescribed (choice C) is a medical intervention that may be ordered by a healthcare provider but should not be assumed as a nursing intervention without a prescription. Elevating the head of the bed (choice D) is a measure commonly used for patients with respiratory distress or to prevent aspiration but is not a direct intervention for fluid volume overload.

Correct Answer: A

Rationale: The correct answer is A: Prostate-specific antigen (PSA). PSA is a marker specifically used for prostate cancer screening. Elevated levels of PSA can indicate prostate cancer or other prostate-related issues, prompting the need for further diagnostic investigations. Choices B, C, and D are not typically associated with prostate cancer screening. Human chorionic gonadotropin (hCG) is related to pregnancy, alpha-fetoprotein (AFP) is associated with liver and germ cell tumors, and carcinoembryonic antigen (CEA) is linked to colorectal cancer.

Correct Answer: D

Rationale: The correct answer is D because clients should press the button on the PCA pump when they feel pain to receive controlled doses of medication. Option A is incorrect as the client should be the one to self-administer the medication through the PCA pump. Option B is incorrect as the primary purpose of the PCA pump is to manage pain, not to keep the client comfortable. Option C is incorrect because the client should not adjust the dosage themselves; instead, they should communicate any pain concerns to the healthcare provider.

Correct Answer: D

Rationale: The correct answer is D because it accurately transcribes the prescription by specifying the medication (Potassium chloride), the dose (20 mEq), the route (PO for by mouth), and the frequency (every morning). Choice A is incorrect as it specifies a lower dose compared to the correct prescription. Choice B is incorrect due to an inaccurate dose. Choice C is incorrect as it lacks specificity regarding the type of potassium prescribed and the dose.

Correct Answer: A

Rationale: Postoperative pain is commonly caused by the surgical incision and muscle tension. The correct answer is A. Surgical incisions cause tissue damage, triggering pain responses. Muscle tension can result from factors like positioning during surgery or guarding due to pain. Managing postoperative pain caused by surgical incisions and muscle tension involves the use of analgesics to alleviate discomfort. Choices B, C, and D are incorrect. Nerve damage and wound complications may also cause pain but are not as common as surgical incisions and muscle tension. Hypotension and respiratory issues are not direct causes of postoperative pain. Infection at the incision site can lead to pain, but it is a specific complication rather than a common cause of postoperative pain.