Correct Answer: D

Rationale: The correct answer is D: To help nurses focus on the scope of medical practice. Developing a standard formal nursing diagnosis helps nurses to identify and focus on the patient's specific health issues within the nursing scope of practice. This enables nurses to provide targeted and effective care interventions. A: To form a language that can be encoded only by nurses - This choice is incorrect because the purpose of a nursing diagnosis is not exclusive to nurses and should be comprehensible to all healthcare professionals caring for the patient. B: To distinguish the nurse’s role from the physician’s role - While this distinction is important, the main purpose of developing a nursing diagnosis is to guide nursing interventions based on the patient's nursing care needs, rather than solely differentiating roles. C: To develop clinical judgment based on other’s intuition - This choice is incorrect as clinical judgment should be based on evidence-based practice and critical thinking, rather than solely relying on intuition or others' opinions.

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 because focusing on the patient's presenting situation is the first step in the problem-oriented approach. This allows the nurse to gather relevant data related to the current health issue, which is crucial for identifying the problem and formulating a care plan. Option A is incorrect as chronological order may not prioritize the most critical data. Option C is incorrect as interpretations come after data collection. Option D is incorrect as observation typically follows data collection and analysis. Focusing on the patient's presenting situation ensures efficient and effective data collection for problem-solving.

Correct Answer: C

Rationale: The correct answer is C: 5 years. In ALS, 50% of patients have a life expectancy of around 3-5 years from the time of diagnosis. This is due to the progressive nature of the disease, leading to rapid deterioration of motor neurons and muscle function. Choice A (3 years) is too specific and may not apply to exactly 50% of patients. Choice B (10 years) and D (20 years) are too optimistic and do not align with the typical prognosis of ALS, where the majority of patients have a shorter life expectancy. Therefore, based on the average survival rates and disease progression, choice C is the most accurate representation of the normal life expectancy for 50% of ALS patients.

Correct Answer: B

Rationale: The correct answer is B - Focus on the patient's presenting situation. This is because in the problem-oriented approach, the nurse must first gather data related to the patient's current issue or concern. This initial focus helps in identifying the primary problem, setting priorities, and developing a care plan. Now, let's analyze the other choices: A: Completing questions in chronological order may not be necessary or relevant to addressing the patient's immediate issue. C: Making accurate interpretations of the data comes after data collection, so it is not the first step. D: Conducting an observational overview is important but should come after focusing on the patient's presenting situation to gather specific and relevant data.