Correct Answer: D

Rationale: The correct answer is D because breast implants can hinder mammography by obscuring the view of breast tissue, making it difficult to detect abnormalities like masses. This is due to the implants blocking the x-ray machine's view. Choice A is incorrect as discomfort is not the primary reason for interference. Choice B is incorrect as breast implants are not a contraindication to mammography but can complicate the process. Choice C is incorrect as implants are designed to be secure and are not likely to be dislodged during a mammogram.

Correct Answer: A

Rationale: The correct first step is to administer pain relief (Choice A) because addressing the client's pain is a top priority to ensure their comfort and well-being. Pain management is crucial post-surgery to prevent complications and aid in recovery. Monitoring vital signs (Choice B) is important but should follow pain relief to ensure the client's stability. Assessing the wound (Choice C) is necessary but not the immediate priority when the client is in acute pain. Applying a warm compress (Choice D) may provide temporary relief but does not address the underlying cause of the pain. Therefore, administering pain relief is the most appropriate initial action to alleviate the client's discomfort and start the healing process effectively.

Correct Answer: A

Rationale: The correct answer is A: Administer nitroglycerin. This is the first step in the care of a client with acute chest pain because nitroglycerin helps dilate blood vessels, improving blood flow to the heart. This can relieve chest pain associated with angina or heart attack. Administering aspirin (choice B) is important as well, but nitroglycerin is prioritized due to its immediate effect in reducing chest pain. Administering opioids (choice C) and morphine (choice D) are not recommended as first-line treatments for acute chest pain, as they can mask symptoms and delay the diagnosis of potentially life-threatening conditions.

Correct Answer: A

Rationale: The correct answer is A: Creatinine. Creatinine is a waste product produced by muscles and excreted by the kidneys. An elevated creatinine level indicates impaired kidney function, making it a key indicator for early detection of renal failure. Blood urea nitrogen (BUN) can also be elevated in renal failure, but creatinine is a more specific and sensitive marker. Sodium and potassium levels are not directly related to renal failure detection.

Correct Answer: D

Rationale: The correct answer is D: Objective. During a physical assessment, the nurse gathers data through observation and measurement, such as vital signs and physical appearance, which are objective and measurable. This type of data is based on facts rather than opinions or interpretations, making it reliable for assessing the client's health status. Patient-centered data (A) refers to information focused on the client's perspective, subjective data (B) is based on the client's symptoms or feelings, and unconfirmed data (C) lacks validation or evidence, making them unreliable for making clinical decisions.