Correct Answer: B

Rationale: The correct answer is B: Spinach. Spinach is high in vitamin K, which can interfere with the effectiveness of warfarin, an anticoagulant medication. Patients taking warfarin should limit foods high in vitamin K to maintain the medication's effectiveness and consistent dosage. Bananas, potatoes, and apples are not high in vitamin K and do not typically interfere with warfarin therapy.

Correct Answer: A

Rationale: Correct Answer: A nurse should identify an increased heart rate as a complication following a thoracentesis and contact the provider immediately. An increased heart rate may indicate a pneumothorax or other serious complications. Choices B, C, and D are incorrect because decreased temperature, serosanguineous drainage, and discomfort at the puncture site are expected findings following a thoracentesis and do not indicate a significant complication requiring immediate provider notification.

Correct Answer: C

Rationale: Preventing aspiration is the priority when caring for a client who is vomiting to reduce the risk of pneumonia or other respiratory complications. Aspiration can occur when vomitus enters the airway, leading to respiratory distress. Ensuring the airway is protected during vomiting episodes is essential. Administering an antiemetic (Choice A) can be considered after addressing the immediate risk of aspiration. Notifying housekeeping (Choice B) and providing an emesis basin (Choice D) are important but are secondary to preventing aspiration, which is crucial for the client's safety and well-being.

Correct Answer: B

Rationale: The correct first action for the nurse to take when caring for a client with pneumonia who has a new prescription for antibiotics is to obtain a sputum culture. This is important to identify the specific bacteria causing the pneumonia before administering antibiotics. Administering the antibiotic immediately (Choice A) may not be appropriate without knowing the specific pathogen. Notifying the provider of the prescription (Choice C) is important but not the first action to be taken. Checking the client's allergy history (Choice D) is relevant but not the priority in this situation.

Correct Answer: D

Rationale: Administering nitroglycerin is the priority action when a client is experiencing chest pain as it helps alleviate the pain caused by reduced blood flow to the heart. Oxygen can be beneficial, but nitroglycerin takes precedence in this situation. Aspirin can also be given, but nitroglycerin is the priority. Performing an ECG can provide valuable information but is not the first action to take in this scenario.