A nurse is caring for a patient with a history of myocardial infarction. The nurse should prioritize which of the following interventions?

Correct Answer: B

Rationale: The correct answer is B: Monitoring vital signs and oxygen saturation. This is the priority intervention because it allows the nurse to assess the patient's current cardiac status and detect any potential complications early. Monitoring vital signs provides crucial information on the patient's cardiovascular stability, while oxygen saturation levels indicate adequate tissue perfusion. Administering pain medication (A) can be important but not the priority. Deep breathing exercises (C) and providing nutritional education (D) are important but not as immediate as monitoring vital signs and oxygen saturation in a patient with a history of myocardial infarction.

Correct Answer: B

Rationale: The correct answer is B: Encouraging early ambulation and use of compression stockings. This intervention is crucial post-hip replacement to prevent complications such as blood clots and muscle weakness. Early ambulation helps prevent blood clots by promoting circulation, and compression stockings further aid in preventing deep vein thrombosis. Pain medication (A) is important but not the priority in preventing complications. Providing nutritional support (C) is also important but does not directly prevent post-operative complications. Monitoring for signs of infection (D) is essential but not as immediate as promoting early ambulation to prevent complications.

Correct Answer: A

Rationale: The correct answer is A: Inspecting feet daily for signs of injury. This is crucial for patients with diabetic neuropathy to prevent complications like foot ulcers. Daily foot inspections can catch any signs of injury early, allowing for prompt treatment. It helps in preventing infections and serious complications. Summary of why other choices are incorrect: B: Exercising to improve circulation - While exercise is beneficial for overall health, it may not directly address the risk of injury due to neuropathy. C: Eating more protein-rich foods - While a balanced diet is important for managing diabetes, protein-rich foods do not specifically address the risk of foot injuries in diabetic neuropathy. D: Using tight-fitting shoes to prevent blisters - Tight-fitting shoes can actually increase the risk of blisters and injuries, especially in patients with diabetic neuropathy.

Correct Answer: B

Rationale: Rationale: B is correct because patients with CKD often have difficulty excreting potassium, so limiting high potassium foods is crucial to prevent hyperkalemia. A is incorrect because increasing potassium intake is not recommended. C is incorrect as excessive protein intake can worsen kidney function. D is incorrect because CKD patients typically have fluid restrictions to prevent fluid overload and electrolyte imbalances.

Correct Answer: A

Rationale: The correct answer is A: Severe headaches and blurred vision. These symptoms can indicate a hypertensive crisis, a severe complication of hypertension. Headaches and blurred vision are signs of potentially dangerous high blood pressure levels. Weight loss and fatigue (B), increased appetite and tremors (C), and nausea and vomiting (D) are not typical complications of hypertension and do not directly relate to the cardiovascular effects of high blood pressure. Monitoring for severe headaches and blurred vision is crucial for early detection and management of hypertensive crises.