Correct Answer: A

Rationale: The correct answer is A. Clients taking warfarin should avoid leafy green vegetables because they are high in vitamin K, which can interfere with the effectiveness of warfarin by counteracting its anticoagulant effects. Choices B, C, and D are all correct statements related to taking warfarin. Regular INR monitoring is necessary to ensure the medication is within the therapeutic range, using a soft toothbrush reduces the risk of bleeding gums, and taking the medication at the same time daily helps maintain consistent blood levels.

Correct Answer: D

Rationale: The correct action for the nurse to take in this scenario is to discontinue the oxytocin infusion. With contractions occurring every 90 seconds with a duration of 90 seconds, the contractions are too frequent and prolonged, which can lead to uterine rupture or fetal distress. Increasing or maintaining the oxytocin infusion would exacerbate the situation, potentially causing harm to the mother and fetus. Decreasing the oxytocin infusion might not be sufficient to address the issue, making discontinuation the most appropriate action to ensure the safety of both the client and the baby.

Correct Answer: C

Rationale: The correct answer is C: 'Use a new catheter each time you perform self-catheterization.' It is essential to use a new, sterile catheter each time to prevent infection during the procedure. Choice A is incorrect because cleaning the catheter with alcohol may not be sufficient to prevent infection. Choice B is incorrect because self-catheterization is typically done in a clean, private area, not necessarily on the toilet. Choice D is incorrect because lubricating the catheter tip with petroleum jelly is a common practice but not as crucial as using a new catheter each time to prevent infection.

Correct Answer: A

Rationale: Administering oxygen is the best intervention for a patient experiencing respiratory distress because it helps improve oxygenation. Oxygen therapy is the initial and priority intervention to ensure an adequate oxygen supply to the body tissues. Administering bronchodilators (Choice B) may be appropriate for specific respiratory conditions like asthma or COPD but is not the first-line intervention in all cases of respiratory distress. Administering IV fluids (Choice C) is not a standard intervention for respiratory distress unless there is an underlying cause like dehydration. Repositioning the patient (Choice D) can aid in optimizing ventilation but is not the primary intervention for respiratory distress.

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.