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.

Correct Answer: A

Rationale: Providing anticipatory guidance classes to parents through public schools is the most appropriate action for the public health nurse in a rural area. This approach allows the nurse to address early prevention strategies, which are crucial in promoting health in rural populations. Choice B is incorrect because having a nurse from outside the community may not fully understand the local needs and dynamics. Choice C is wrong as focusing health spending on tertiary interventions is not cost-effective or preventive. Choice D is also incorrect because while increasing awareness about industrial pollution is important, it may not directly address the health needs of the local rural population.

Correct Answer: A

Rationale: The correct answer is A: Fever, chills, and increased heart rate are classic signs of an infection. These symptoms indicate the body's response to an invading pathogen. Choice B, 'Increased white blood cell count and fever,' is not a primary symptom that a person would typically notice themselves, and white blood cell count needs to be tested. Choice C, 'Shortness of breath and confusion,' may indicate other conditions like heart or lung issues rather than a general infection. Choice D, 'Sweating and low blood pressure,' are not specific to infections and can be caused by various factors like heat or dehydration.

Correct Answer: B

Rationale: Performing a wound culture before applying ointment is crucial when providing wound care for a client with a pressure ulcer. This step helps identify the presence of any infection, allowing for appropriate treatment. Choice A is incorrect because covering the wound with a dry, sterile dressing may not address potential infections. Choice C is incorrect as cleansing the wound with alcohol can be too harsh and drying to the surrounding skin. Choice D is incorrect because covering the wound with a wet-to-dry dressing is not typically recommended for pressure ulcers, as it can cause trauma to the wound bed during removal.

Correct Answer: A

Rationale: Using a bed exit alarm system is crucial in minimizing the risk of injury for a client with dementia. This intervention helps alert staff when the client is attempting to leave the bed, reducing the chances of falls. Raising all four side rails while the client is in bed (Choice B) can lead to restraint-related issues and is not recommended unless necessary for safety reasons. Applying a soft wrist restraint (Choice C) is generally not the first choice in managing clients with dementia due to the risk of complications and loss of mobility. Dimming the lights in the client's room (Choice D) may not directly address the risk of injury associated with dementia and may even increase the risk of falls due to poor visibility.