Correct Answer: A

Rationale: The correct answer is A (Every 24 hours) because TPN solutions are at high risk for contamination, making it crucial to change the tubing frequently to prevent infection. Changing the tubing every 24 hours helps maintain sterility and reduces the risk of microbial growth. Choices B, C, and D are incorrect because prolonging the tubing change interval increases the likelihood of bacterial colonization and poses a higher risk of infection for the patient receiving TPN. It is essential to adhere to the recommended 24-hour tubing change frequency to ensure patient safety and minimize the potential for complications.

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.

Correct Answer: B

Rationale: The correct answer is B: Monitor abdominal pain. This is the priority assessment for a client with acute pancreatitis because it helps determine the severity of the condition and guides the treatment plan. Abdominal pain is a key symptom of pancreatitis and monitoring its intensity, location, and changes over time is crucial. Assessing vital signs (choice A) is important but secondary to monitoring pain. Monitoring serum amylase levels (choice C) is relevant for diagnosis but not immediate priority. Performing a CT scan (choice D) may be necessary later for further evaluation but is not the initial priority in managing acute pancreatitis.

Correct Answer: A

Rationale: The correct answer is A: Administer epinephrine. Epinephrine is the first-line treatment for severe allergic reactions as it acts quickly to reverse symptoms like airway swelling and low blood pressure. It helps to open airways and increase blood pressure. Antihistamines (B) are not as fast-acting as epinephrine in severe reactions. Applying a cold compress (C) is not effective in treating anaphylaxis. Placing the client in a supine position (D) can worsen breathing difficulties. Administering epinephrine is crucial in managing severe allergic reactions promptly and effectively.