Correct Answer: D

Rationale: The correct action for the nurse to take when caring for a client with deep vein thrombosis is to withhold heparin IV infusion. Administering heparin is crucial in managing deep vein thrombosis by preventing further clot formation. Positioning the affected extremity higher than the heart (Choice A) promotes venous return and reduces swelling. Acetaminophen (Choice B) can be given for pain relief. Massaging the affected extremity (Choice C) is contraindicated as it can dislodge a clot, leading to serious complications.

Correct Answer: A

Rationale: The correct intervention for a client with dysphagia is to administer thickened liquids. Thickened liquids help prevent aspiration, which is a common risk for clients with swallowing difficulties. Providing small bites of food (choice B) can help, but the priority is to modify the liquid consistency. Encouraging the client to eat quickly (choice C) is not recommended as it may increase the risk of aspiration and fatigue. Having the client lie supine after meals (choice D) can actually increase the risk of aspiration, especially in clients with dysphagia.

Correct Answer: A

Rationale: Administering oxygen is the most appropriate intervention for a patient with confusion post-surgery because it helps alleviate confusion caused by potential hypoxia. In a post-surgical setting, confusion can be a sign of decreased oxygen levels in the blood due to various reasons such as respiratory depression, decreased lung function, or other complications. Administering oxygen can quickly address hypoxia, improving oxygenation to the brain and reducing confusion. Repositioning the patient, administering IV fluids, or performing a neurological assessment are not the primary interventions for confusion related to hypoxia post-surgery.

Correct Answer: D

Rationale: The correct action to prevent infection when caring for a client with a new peripheral IV catheter is to change the IV site every 48 to 72 hours. Shaving the hair at the insertion site can actually increase the risk of infection by causing microabrasions in the skin. While cleansing the site with povidone-iodine is important before insertion, it is not necessary to continue doing so once the IV is in place. Wearing sterile gloves when changing the dressing is crucial for maintaining aseptic technique but does not directly prevent infection related to the IV site itself.

Correct Answer: A

Rationale: The correct answer is to monitor INR levels. INR levels are the most critical indicator for monitoring bleeding risk in patients on warfarin. INR stands for International Normalized Ratio and specifically measures the clotting tendency of the blood. Monitoring hemoglobin levels, potassium levels, or platelet count are not as directly relevant to assessing bleeding risk in patients on warfarin.