Correct Answer: C

Rationale: The correct action for the nurse to take when administering medications through an NG tube is to dissolve each medication separately and flush with water between medications. This practice helps prevent interactions between medications and ensures that each medication is delivered effectively. Option A is incorrect as mixing all medications together can lead to chemical interactions or alter the effectiveness of the medications. Option B is incorrect because flushing the NG tube with air is not recommended and may cause harm. Option D is incorrect as administering all medications at the same time does not allow for proper absorption and interaction control.

Correct Answer: B

Rationale: The correct first action for the nurse to take when a client reports pain and tenderness at the site of an indwelling urinary catheter is to notify the provider. Pain and tenderness at the catheter site may indicate infection, and the healthcare provider needs to be informed for further assessment and appropriate interventions. Irrigating the catheter with normal saline (Choice A) should not be the initial action without consulting the provider first. While assessing for signs of infection (Choice C) is important, notifying the provider takes precedence. Administering prescribed antibiotics (Choice D) should only be done based on the provider's orders after assessment and confirmation of infection.

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: C

Rationale: Clients with dysphagia have difficulty swallowing, so providing medications through a straw can help control the flow and prevent aspiration. Offering medications with a full glass of water (Choice A) may increase the risk of aspiration. Crushing medications and mixing them together (Choice B) can alter the medication's effectiveness or cause adverse effects. Mixing medications with applesauce (Choice D) may also present a choking hazard for clients with dysphagia.

Correct Answer: B

Rationale: When a client presents with symptoms of phlebitis at the IV site, such as redness, warmth, and pain, it is essential to discontinue the IV line. Increasing the IV flow rate could exacerbate the condition by further irritating the vein. Applying a cold compress may provide temporary relief but does not address the underlying issue of phlebitis. Elevating the limb is not the primary intervention for phlebitis and discontinuing the IV line takes precedence to prevent complications.