Correct Answer: A

Rationale: The correct answer is A. BCG vaccine is commonly supplied in freeze-dried form, not in liquid form. Therefore, choices B and C are incorrect. Option D is also incorrect as the vaccine is not supplied in liquid form in a glass ampule.

Correct Answer: B

Rationale: PCA allows patients to self-administer pain medication within prescribed limits, without the need to call the nurse before taking an additional dose. Choice B suggests a misunderstanding of how PCA works, as the patient should be educated that they can self-administer doses within the safety parameters set by the healthcare provider. Choices A, C, and D demonstrate proper understanding of PCA, hence are not indicative of needing further teaching.

Correct Answer: A

Rationale: The highest priority nursing intervention for a client with thrombophlebitis of the left leg is to elevate the leg on 2 pillows. Elevating the leg helps reduce swelling and pain associated with thrombophlebitis by promoting venous return. Applying support stockings (choice B) can be beneficial but is not the highest priority as elevation is more effective in the acute phase. Applying warm compresses (choice C) may worsen the condition by dilating the blood vessels, leading to increased pain and swelling. Maintaining complete bed rest (choice D) is important, but elevation takes precedence to improve circulation and reduce the risk of complications.

Correct Answer: B

Rationale: The correct answer is B. Occupational health nursing involves all aspects mentioned in the statements: prevention, recognition, treatment of injury and illness, application of nursing principles in conserving workers' health, and the requirement of special skills in health, education, and counseling. Choice A focuses on prevention, recognition, and treatment but does not encompass all aspects of occupational health nursing. Choice C only mentions the application of nursing principles without including prevention and treatment. Choice D specifically highlights the need for special skills but does not cover all the aspects of occupational health nursing.

Correct Answer: C

Rationale: Thinning of the skin with loss of elasticity is the physical characteristic of aging that contributes to an increased risk of developing decubitus ulcers. As individuals age, the skin becomes thinner and loses its elasticity, making it more susceptible to damage from pressure, leading to the formation of pressure ulcers. Choices A, B, and D are incorrect as they do not directly contribute to the development of decubitus ulcers in this context.