Correct Answer: C

Rationale: Applying a transparent dressing over the heel is beneficial as it can protect the ulcer from friction and shear, and allow for continuous observation of the wound. This intervention promotes healing and prevents further damage to the skin.

Correct Answer: C

Rationale: Consuming a consistent amount of green leafy vegetables is important for clients taking warfarin as these foods contain vitamin K, which can affect the medication's effectiveness. Maintaining a consistent intake helps stabilize the International Normalized Ratio (INR) levels, which is crucial for monitoring the blood's ability to clot properly while on warfarin therapy.

Correct Answer: C

Rationale: Dark-colored urine is a common sign of dehydration as the urine becomes concentrated. Dehydration leads to reduced fluid intake or excessive fluid loss, causing the urine to be darker in color due to increased urine concentration.

Correct Answer: B

Rationale: When administering a subcutaneous injection, it is important to insert the needle at a 90-degree angle to ensure proper medication delivery into the subcutaneous tissue. This angle helps prevent the medication from being injected too deeply or too superficially, ensuring optimal absorption and therapeutic effect.

Correct Answer: D

Rationale: Flushing the NG tube with water before and after administering medications is essential to prevent clogging of the tube and ensure proper delivery of medication. This practice helps maintain tube patency and decreases the risk of obstruction, which could compromise the client's treatment and nutrition. By flushing the tube, the healthcare provider ensures that the medication is completely delivered and that there are no residual drug particles left in the tube, which could lead to blockages or inconsistent dosing. Therefore, flushing the NG tube is a crucial step in the safe administration of medications to clients receiving enteral feedings.