A 68-year-old patient with a history of peptic ulcer disease presents with hematemesis and hypotension. What is the nurse's immediate priority intervention?

Rationale: A. Positioning the patient in a Trendelenburg position is incorrect because while it was historically used to improve perfusion, it is no longer recommended for hypotensive patients. It can increase the risk of aspiration and does not effectively restore circulating volume in acute hemorrhage. B. Providing the patient with ice chips is incorrect because the patient is actively bleeding and hypotensive. Oral intake is contraindicated due to the risk of vomiting and aspiration, and it does not address the life-threatening hypovolemia. C. Establishing two large-bore IV lines for fluid resuscitation and blood transfusion is correct because the patient is showing signs of hypovolemic shock due to upper gastrointestinal bleeding. Rapid access for fluids and blood products is critical to restore perfusion, maintain hemodynamic stability, and prevent organ failure. This is the highest priority intervention according to the ABCs (Airway, Breathing, Circulation) in emergency care. D. Administering oral proton pump inhibitors (PPIs) is incorrect as the immediate priority. PPIs can reduce gastric acid and help prevent further ulcer bleeding, but their effect is not rapid enough to address acute hypovolemia and shock. Intravenous PPIs may be used after hemodynamic stabilization.