Correct Answer: A

Rationale: The correct answer is A: Anxiety related to barium enema. This is the correct choice because nursing diagnoses should focus on the patient's actual or potential health problems, not just medical conditions. Anxiety is a common response to medical procedures like a barium enema. It is essential for the nurse to address the patient's emotional and psychological needs. Summary: B: Impaired gas exchange related to asthma is a medical diagnosis, not a nursing diagnosis. Nursing diagnoses focus on the patient's response to the medical condition. C: Impaired physical mobility related to incisional pain is a potential nursing diagnosis, but the focus should be on the patient's response to the pain, not just the pain itself. D: Nausea related to adverse effect of cancer medication is also a medical diagnosis. Nursing diagnoses should address the patient's response to the medication side effects, not just the side effects themselves.

Correct Answer: C

Rationale: The correct answer is C because thiotepa is a cell cycle-nonspecific alkylating agent that interferes with both DNA replication and RNA transcription. Thiotepa works by cross-linking DNA strands, leading to inhibition of DNA replication and transcription, ultimately causing cell death. This mechanism of action makes it effective against actively dividing cells, such as cancer cells. Choice A is incorrect because thiotepa does not interfere with DNA replication alone. Choice B is incorrect because thiotepa affects both DNA replication and RNA transcription, not just RNA transcription. Choice D is incorrect because thiotepa does not destroy the cell membrane; instead, it acts on the genetic material within the cell.

Correct Answer: A

Rationale: The correct answer is A because completing a comprehensive database is part of the first phase of the nursing process, which is assessment. During assessment, the nurse gathers data about the patient's health status. This information is crucial for identifying health problems, developing nursing diagnoses, planning interventions, and evaluating outcomes. Choice B is incorrect because identifying nursing diagnoses is part of the second phase, which is diagnosis. Choice C is incorrect as intervening based on priorities of patient care is part of the third phase, which is planning. Choice D is incorrect because determining whether outcomes have been achieved is part of the fourth phase, which is evaluation.

Correct Answer: D

Rationale: The correct evaluative measure is D: Lungs clear to auscultation following use of inhaler. This choice aligns with the expected outcome of having no secretions present in the lungs in 48 hours. By using an inhaler to clear the lungs, the nurse can assess if the expected outcome is being met. This measure directly evaluates the presence of secretions in the lungs, in line with the established goal. Incorrect Choices: A: No sputum or cough present in 4 days - This measure does not align with the expected outcome of having no secretions present in the lungs in 48 hours. B: Congestion throughout all lung fields in 2 days - This indicates a worsening condition and does not demonstrate progress towards the goal. C: Shallow, fast respirations 30 breaths per minute in 1 day - This measure is unrelated to the presence of secretions in the lungs and the goal of avoiding shortness of breath with activity.

Correct Answer: C

Rationale: Step 1: Repositioning a patient who is on bed rest is a nursing intervention as it involves direct patient care to prevent complications like pressure ulcers. Step 2: Nursing interventions aim to promote patient health, prevent illness, and provide comfort. Step 3: Ordering chest x-ray and prescribing antibiotics are medical interventions, beyond the scope of nursing practice. Step 4: Teaching preoperative exercises falls under nursing education but not a direct nursing intervention involving patient care. Summary: Choice C is correct as it aligns with the essence of nursing interventions focusing on patient care and wellbeing. Choices A, B, and D involve actions that are not within the scope of nursing interventions.