Correct Answer: A

Rationale: The correct answer is to pinch the skin and inject at a 45-degree angle when administering enoxaparin. This technique helps ensure proper administration of the medication. Massaging the injection site after administering is unnecessary and could increase the risk of bleeding. Administering at a 90-degree angle is not recommended for enoxaparin injections. Rotating injection sites is important to prevent tissue damage and irritation.

Correct Answer: A

Rationale: The correct answer is to check INR levels. Before administering warfarin, it is crucial to check the INR levels to ensure they are within the therapeutic range. This helps to prevent complications such as bleeding or clotting. Choice B, administering it with food, is incorrect as warfarin should typically be taken on an empty stomach. Choice C, monitoring blood glucose, is unrelated to the administration of warfarin. Choice D, assessing liver function, is important but not the immediate action required before administering warfarin.

Correct Answer: C

Rationale: Correct answer: Monitoring for suicidal thoughts is essential when a client is prescribed sertraline, an antidepressant. Choice A is incorrect because weight gain is not typically associated with sertraline. Choice B is incorrect as sertraline is not an antipsychotic medication. Choice D is incorrect because all medications, including sertraline, have potential side effects.

Correct Answer: C

Rationale: The nurse should instruct the client to liberally apply prescribed lotion to the treatment area. Prescribed hydrating lotions help soothe and protect irradiated skin, reducing dryness, redness, and scaling. Sitting in the sun can further damage the skin. Applying moist heat may exacerbate the skin condition. Washing the area with antimicrobial soap can be too harsh and further irritate the skin.

Correct Answer: B

Rationale: The correct answer is B: Smallpox, anthrax, botulism. These are known biological weapons that can be used in mass casualty situations. Rabies, cholera, and meningitis (Choice A) are not typically used as biological weapons. Ebola, hepatitis B, and tetanus (Choice C) are serious diseases but are not commonly associated with biological warfare. Tuberculosis, influenza, and measles (Choice D) are infectious diseases but are not typically used as biological weapons of mass destruction.