Correct Answer: B

Rationale: The correct answer is B because monitoring for swelling and heaviness of legs is essential in preventing falls, which can be caused by conditions like edema or circulatory issues. Swollen or heavy legs can affect mobility and balance, increasing the risk of falls. This intervention helps identify potential issues early and implement preventive measures. Choice A is incorrect as monitoring for chest pain and LDL levels pertains more to cardiovascular health than fall prevention. Choice C is incorrect because monitoring postural changes in BP is important for managing hypertension, not necessarily for preventing falls. Choice D is incorrect as monitoring temperature for mild fever is more related to identifying infections rather than preventing falls.

Correct Answer: D

Rationale: The correct answer is D: Impaired gas exchange related to alveolar-capillary membrane changes. This is the most appropriate nursing diagnosis for a patient with pneumonia and lower lobe infiltrates. The rationale is that pneumonia causes inflammation and fluid accumulation in the alveoli, impairing the exchange of oxygen and carbon dioxide in the lungs. This directly affects gas exchange. Choice A is incorrect because ineffective breathing pattern is a broad nursing diagnosis that does not specifically address the underlying issue of impaired gas exchange in pneumonia. Choice B is incorrect as the risk of infection related to the chest x-ray procedure is unrelated to the patient's current condition of pneumonia. Choice C is also incorrect as dehydration does not directly correlate with the patient's diagnosis of pneumonia and lower lobe infiltrates.

Correct Answer: D

Rationale: Step 1: A goal should be measurable to track progress effectively. Step 2: The statement "a measurable change in a patient's physical state" indicates a specific and quantifiable outcome. Step 3: This aligns with the SMART criteria for goal setting - Specific, Measurable, Achievable, Relevant, Time-bound. Step 4: Other choices lack the specificity and measurability required for a clear goal. Step 5: Choice A talks about restriction, which is not directly related to understanding a goal. Step 6: Choice B focuses on negative responses, which is not necessarily indicative of understanding the goal. Step 7: Choice C is vague and lacks the specificity of a measurable outcome.

Correct Answer: A

Rationale: Step 1: Type A blood has been associated with a slightly higher risk of developing gastric cancer compared to other blood types. Step 2: The nurse mentioned a 10% increase in risk, which aligns with the increased risk associated with Type A blood. Step 3: Type AB and Type B blood do not have the same increased risk for gastric cancer as Type A blood. Step 4: Type O blood is actually associated with a lower risk of gastric cancer compared to Type A blood. Step 5: Therefore, the correct answer is A: Type A blood.

Correct Answer: C

Rationale: The correct answer is C. Hormonal imbalances are the primary cause of BPH in aging males. As men age, testosterone levels decrease and estrogen levels may increase relative to testosterone, leading to prostate gland growth. This is why hormonal imbalances are more likely the cause of BPH in older males. Explanation of other choices: A: Chronic infection of the urinary tract does not directly cause BPH, although it can lead to similar symptoms such as urinary frequency and urgency. B: Chronic cigarette smoking is not a direct cause of BPH, although it can contribute to overall prostate health and exacerbate symptoms. D: Chronic obstruction of the bladder due to stone is a separate condition from BPH, although it can cause similar urinary symptoms.