Correct Answer: A

Rationale: The correct answer is A: Leg pain, swelling, and redness are early signs of DVT. DVT (Deep Vein Thrombosis) is a condition where blood clots form in deep veins, commonly in the legs. These clots can cause symptoms like pain, swelling, and redness in the affected leg. Choices B, C, and D describe symptoms more commonly associated with other conditions like pulmonary embolism (shortness of breath and high fever), respiratory issues (cough and chest pain), and cardiovascular problems (decreased oxygen saturation and low blood pressure), respectively. Therefore, they are not indicative of early signs of DVT.

Correct Answer: B

Rationale: Performing a wound culture before applying antibiotics is crucial to identify the specific pathogen causing the infection. This helps in selecting the most effective antibiotics for treatment. Changing the wound dressing, applying a wet-to-dry dressing, or cleansing the wound are important interventions but should follow the assessment and identification of the infecting organism through a wound culture to guide appropriate treatment.

Correct Answer: B

Rationale: The correct answer is B: Limit alcohol consumption. Alcohol consumption can aggravate peptic ulcer disease by increasing gastric acid secretion, potentially leading to exacerbations. Choices A, C, and D are incorrect. Choice A is not recommended because antacids containing magnesium can interfere with other medications or conditions the client may have. Choice C is a good recommendation; however, it is not the priority instruction for preventing exacerbations. Choice D is also incorrect as caffeine can stimulate gastric acid secretion, which can worsen peptic ulcer disease.

Correct Answer: B

Rationale: The correct lifestyle change that should be emphasized for a client with hypertension is to limit the intake of high-fat foods. High-fat foods can contribute to high blood pressure, so reducing their consumption is important in managing hypertension. Choice A is incorrect because increasing intake of sodium-rich foods can worsen hypertension due to their effect on blood pressure. Choice C is incorrect as caffeinated beverages can also elevate blood pressure. Choice D is incorrect because while high-protein foods can be beneficial, they do not directly lower blood pressure like reducing high-fat foods would.

Correct Answer: A

Rationale: To assess a patient for potential deep vein thrombosis (DVT), healthcare professionals should look for unilateral leg swelling. This is a classic sign of DVT. While encouraging early mobilization is generally beneficial for preventing DVT, it is not a method of assessment. Checking for calf tenderness is also relevant but not as specific as unilateral leg swelling. Observing for redness and warmth can be signs of inflammation but are not as specific to DVT as unilateral leg swelling.