Correct Answer: B

Rationale: The correct answer is B. When instructing a client on the use of a cane, it is essential to ensure that the cane has a rubber tip. This rubber tip helps prevent slipping, providing additional stability and safety. Option A, holding the cane on the weaker side, is incorrect as the cane should be held on the stronger side to provide better balance and support. Option C, keeping the cane on the dominant side, is also incorrect because the cane should be held on the stronger side. Option D, using the cane only on stairs, is not comprehensive as the cane can be used for support and balance while walking on level ground as well.

Correct Answer: C

Rationale: Urinary incontinence is a risk factor for skin breakdown, which can lead to the development of pressure injuries. While malnutrition, poor hygiene, and immobility are important considerations in overall patient care, they are not specifically identified as significant risk factors for pressure injuries in this scenario.

Correct Answer: B

Rationale: The correct answer is to discontinue the IV infusion. The signs of redness and warmth at the IV site indicate phlebitis, an inflammation of the vein. Discontinuing the IV infusion is crucial to prevent further complications such as infection or thrombosis. Flushing the IV line with saline would not address the underlying issue of phlebitis. Applying a cold compress may provide temporary relief but does not address the cause. Increasing the IV flow rate can exacerbate the inflammation and should be avoided.

Correct Answer: B

Rationale: An immunization functions as part of acquired immunity. Acquired immunity involves the production of antibodies after immunization, which helps protect against future infections. Natural immunity is not induced by immunization but is present from birth. Passive immunity is temporary and acquired through the transfer of pre-formed antibodies. Cell-mediated immunity is a type of immune response that involves the activation of phagocytes, antigen-specific cytotoxic T-lymphocytes, and the release of various cytokines in response to an antigen.

Correct Answer: B

Rationale: The correct answer is to 'Use sequential compression devices.' Sequential compression devices help prevent DVT by promoting venous return, reducing stasis in the veins, and preventing blood clot formation. Resting in bed for long periods (Choice A) can actually increase the risk of DVT due to decreased mobility. Avoiding leg exercises (Choice C) is also not recommended as mobilization and exercises can help prevent blood clots. Keeping legs crossed (Choice D) can impede blood flow and is not advisable in reducing the risk of DVT.