Correct Answer: A

Rationale: The correct answer is A: Prostate-specific antigen, which is used to screen for prostate cancer. PSA is a protein produced by the prostate gland, and elevated levels may indicate prostate cancer. Choice B is incorrect as PSA is specific to the prostate, not protein levels. Choice C is incorrect as pneumococcal strep antigen is related to pneumonia, not PSA. Choice D is incorrect as Papanicolua-specific antigen is not a recognized term, and PSA is not used to screen for cervical cancer.

Correct Answer: B

Rationale: The correct answer is B: Focus on the patient's presenting situation. This is the first step in the problem-oriented approach as it helps the nurse understand the immediate issues and prioritize data collection. By focusing on the presenting situation, the nurse can gather relevant information efficiently. A: Completing questions in chronological order may not address the current problem effectively. C: Making accurate interpretations of the data comes after data collection, not as the first step. D: Conducting an observational overview is important but typically follows focusing on the presenting situation to guide what observations are necessary.

Correct Answer: D

Rationale: The correct answer is D because developing a standard formal nursing diagnosis helps nurses focus on the scope of their practice. By identifying specific patient problems and their potential causes, nurses can provide appropriate interventions and evaluate patient outcomes effectively. This process enhances the quality of care delivery and promotes patient safety. A: This is incorrect because nursing diagnoses are not meant to be a language exclusive to nurses but rather a standardized way to communicate patient data. B: This is incorrect as nursing diagnoses are not about distinguishing roles but rather about identifying and addressing patient problems. C: This is incorrect as nursing diagnoses are based on evidence and critical thinking, not solely on intuition.

Correct Answer: D

Rationale: The correct answer is D: Diarrhea. Antibiotics can disrupt the normal balance of gut bacteria, leading to diarrhea. This occurs due to the overgrowth of harmful bacteria in the intestines. Monitoring for diarrhea is crucial to prevent dehydration and further complications. Platelet dysfunction (A), stomatitis (B), and oliguria/dysuria (C) are not typically associated with the disruption of normal flora by antibiotics. These symptoms are more likely related to other conditions or side effects of medications, making them incorrect choices in this scenario.

Correct Answer: B

Rationale: The correct answer is B because monitoring the site and progress of the infusion every hour is crucial to prevent complications like infiltration or infection in clients with hypertension. Choice A is incorrect as checking BP every hour is excessive. Choice C is incorrect as daily monitoring may not detect issues promptly. Choice D is incorrect as pulse rate monitoring is not directly related to IV fluid administration in this context. Monitoring the site and progress hourly ensures timely intervention if any issues arise.