Correct Answer: A

Rationale: Implementing suicide precautions is the most critical intervention in this scenario as it directly addresses the patient's safety and the prevention of self-harm. The patient's significant weight loss, chronic low self-esteem, suicide plan, and recent initiation of an antidepressant medication indicate a high risk of self-harm. Suicide precautions involve close monitoring, removing harmful objects, and ensuring a safe environment to prevent the patient from acting on suicidal thoughts. While offering high-calorie snacks and fluids, assisting the patient in identifying personal strengths, and observing for therapeutic effects of the antidepressant are important aspects of care, they do not directly address the immediate risk of self-harm that implementing suicide precautions does.

Correct Answer: D

Rationale: To ensure safe medication use, the nurse should encourage the client to call the clinic nurse or healthcare provider if any questions arise. This direct communication allows for personalized assistance and clarification tailored to the client's specific concerns. Providing Internet sites (Choice A) may lead to unreliable information, and a drug reference book (Choice B) may not address individualized questions. While the written instructions may contain information (Choice C), they may not cover all potential queries the client might have, making direct contact with the healthcare provider the most appropriate option.

Correct Answer: B

Rationale: The correct answer is the use of careful handwashing technique. Proper handwashing is the most effective way to prevent the transmission of infectious organisms. Option A, administration of plasma expanders, addresses hypovolemia in burn patients but does not directly decrease the risk of infection. Option C, application of a topical antibacterial cream, is beneficial but not as effective as proper handwashing in preventing infection. Option D, limiting visitors, may help reduce the risk of exposure to pathogens but is not as critical as ensuring healthcare providers maintain strict hand hygiene, which is the cornerstone of infection control in any healthcare setting.

Correct Answer: D

Rationale: The priority action for the nurse is to gently lower the client to the floor (Option D). This action is crucial to prevent injury to both the client and the nurse. Lowering the client to the floor should be done when the client is unable to support his own weight, ensuring a safe position to prevent falls. Checking the client's carotid pulse (Option A) is important, but it should be performed after ensuring the client's safety. Encouraging the client to get to the toilet (Option B) is impractical as the client is already falling. Calling for help in a loud voice (Option C) may cause chaos and alarm other clients, making it a less suitable immediate action in this scenario.

Correct Answer: B

Rationale: The correct answer is the right cephalic vein. The cephalic vein is a large and superficial vein commonly used for IV access. Documenting the specific anatomic name of the vein used for IV access, such as the cephalic vein, is essential for accurate medical records. Option A, the left brachial vein, is incorrect as the brachial vein is too deep to be accessed for IV infusion. Option C, the dorsal side of the right wrist, is not a recommended IV access site due to fragile veins and potential pain for the patient. Option D, right upper extremity, is too broad and lacks the specificity necessary for precise documentation of the IV access site.