Correct Answer: A

Rationale: The nurse should assess the client with a fractured femur and sharp chest pain first. Sharp chest pain in this client may indicate a pulmonary embolism, a life-threatening condition requiring immediate attention. The other options describe important patient conditions but do not pose an immediate threat to life like a potential pulmonary embolism does.

Correct Answer: A

Rationale: Corrected Rationale: When administering warfarin, it is crucial to verify the patient's INR levels. INR monitoring is essential to ensure that the patient is receiving the correct dose of warfarin for their condition and to minimize the risk of bleeding. Choices B, C, and D are incorrect because administering warfarin with food, monitoring blood glucose levels, and assessing liver function are not directly related to the safe administration and monitoring of warfarin therapy.

Correct Answer: A

Rationale: The correct answer is to monitor for withdrawal symptoms. This is a priority because individuals with a history of substance abuse are at risk of experiencing withdrawal symptoms when the substance is no longer used. Monitoring for withdrawal symptoms is crucial to ensure the client's safety and to manage any potential complications related to substance withdrawal. Encouraging social activities, scheduling regular follow-ups, and providing educational materials are also important aspects of care, but they are not as critical as monitoring for withdrawal symptoms in this immediate scenario.

Correct Answer: A

Rationale: The correct answer is A: Swelling in the limb. Swelling, particularly in one limb, is a common sign of deep vein thrombosis (DVT) and should be assessed. This swelling is often accompanied by pain, redness, and warmth in the affected area. Choices B, C, and D are incorrect because decreased heart rate, increased appetite, and improved mobility are not typically associated with DVT. The main focus in assessing for DVT is recognizing the signs and symptoms related to venous thrombosis.

Correct Answer: A

Rationale: The correct answer is A: Third trimester of pregnancy. Salicylic acid is contraindicated during the third trimester of pregnancy due to the risk of complications for both the mother and the fetus. Thrombocytopenia (choice B) is not a contraindication to salicylic acid therapy. Coronary artery disease (choice C) is not a specific contraindication to salicylic acid therapy. However, caution should be exercised in patients with coronary artery disease due to the antiplatelet effects of salicylic acid. Adolescents with chickenpox (choice D) should not be given salicylic acid due to the risk of Reye Syndrome, a rare but serious illness.