Correct Answer: A

Rationale: The correct answer is A: Administer antibiotics. Antibiotics are crucial in treating wound infections as they target and eliminate the infection-causing bacteria, preventing the infection from spreading and promoting healing. Applying a cold compress (choice B) or heat (choice C) may provide temporary relief but do not address the underlying infection. Administering IV fluids (choice D) may be necessary for hydration, but it does not directly treat the infection. Antibiotics directly target the infection, making it the most important intervention for a client with a wound infection.

Correct Answer: A

Rationale: The correct answer is A: Administer nitroglycerin. This is the nurse's first action for a client with a suspected MI because nitroglycerin helps dilate blood vessels, improving blood flow to the heart. This can help reduce chest pain and prevent further damage to the heart muscle. Administering nitroglycerin promptly is crucial in managing an MI. Monitoring cardiac rhythm (B) and assessing the ECG (C) are important steps, but administering nitroglycerin takes precedence in addressing the client's immediate symptoms. Assisting with positioning (D) is not as urgent or directly related to managing an MI compared to administering nitroglycerin.

Correct Answer: A

Rationale: The correct answer is A: Inspect for visible pulsation. This is because an arteriovenous fistula for hemodialysis should have a visible pulsation, indicating proper blood flow. Palpating for thrill (B) and auscultating for bruit (C) are also common assessments for an arteriovenous fistula, but inspecting for visible pulsation is the most direct and reliable way to assess the patency of the fistula. Percussing for dullness (D) is not relevant in this context as it does not provide information about the vascular access site.

Correct Answer: A

Rationale: The correct answer is A: Administer antiemetics. Antiemetics help alleviate nausea and vomiting by blocking neurotransmitters in the brain. This intervention directly targets the symptoms and provides relief for the client. Administering fluids (B) may help with hydration but does not address the root cause. Administering analgesics (C) is for pain relief, not for nausea and vomiting. Monitoring electrolytes (D) is important but does not directly treat the symptoms. Therefore, administering antiemetics is the most appropriate intervention for severe nausea and vomiting.

Correct Answer: A

Rationale: Step 1: Lisinopril is an ACE inhibitor commonly prescribed post-myocardial infarction to reduce strain on the heart and prevent further damage. Step 2: ACE inhibitors like Lisinopril help lower blood pressure and improve heart function. Step 3: By reducing the workload on the heart, Lisinopril can help prevent complications post-MI. Step 4: Acetaminophen (B) is a pain reliever and does not address the cardiovascular issues post-MI. Step 5: Furosemide (C) and Hydrochlorothiazide (D) are diuretics typically used for managing fluid retention, not the primary focus after an MI. Summary: Lisinopril is the correct choice as it helps improve heart function and prevent complications post-MI, unlike the other options which do not directly address the cardiovascular issues associated with MI.