Correct Answer: A

Rationale: The correct answer is A: Using a bed exit alarm system. A bed exit alarm alerts staff when a client with dementia attempts to leave the bed, reducing the risk of falls. Choice B is incorrect because raising all four side rails can lead to restraint-related injuries and is not recommended. Choice C is incorrect as applying wrist restraints should be avoided due to the risk of injury and decreased mobility. Choice D is incorrect as dimming the lights in the client's room does not directly address the risk of injury associated with dementia.

Correct Answer: A

Rationale: When managing care for a patient with a wound infection, administering prescribed antibiotics is crucial. Antibiotics are necessary to treat the infection and prevent it from worsening. While cleaning the wound with saline and applying a sterile dressing are important components of wound care, the primary treatment for a wound infection is antibiotics. Monitoring for signs of sepsis is also essential, but administering antibiotics promptly is the most critical step in managing a wound infection.

Correct Answer: B

Rationale: The first nursing action when caring for a client with a wound infection is to perform a wound culture before applying antibiotics. This step is crucial to identify the specific infecting organism and determine the most effective antibiotic therapy. Choices A, C, and D are incorrect because changing the dressing, cleansing the wound, or applying a wet-to-dry dressing should only be done after obtaining the culture results and starting appropriate antibiotic treatment.

Correct Answer: A

Rationale: The correct answer is A: Yankauer catheter. The Yankauer catheter is specifically designed for oral suctioning, making it the most appropriate choice for this task. Choice B, the Bulb syringe, is typically used for suctioning small amounts of liquid from the nose or mouth. Choice C, the Suction catheter, is more commonly used for deep suctioning in the trachea or bronchi. Choice D, Sterile gloves, are necessary for infection control but are not the primary supply used for oral suctioning.

Correct Answer: A

Rationale: The correct answer is A: Cardiac workload decreases. Digoxin helps reduce cardiac workload in clients with heart failure, improving symptoms. This reduction in workload indicates that the medication is effective. Choice B, blood pressure increases, is incorrect because digoxin typically does not directly affect blood pressure. Choice C, respiratory rate increases, is incorrect as an increased respiratory rate is not a typical indicator of digoxin effectiveness. Choice D, temperature decreases, is also incorrect as digoxin does not typically affect body temperature.