A patient presents with acute onset severe abdominal pain, tachycardia, and hypotension. On examination, the abdomen is rigid and tympanic. A chest X-ray reveals free air under the diaphragm. Which intervention should the nurse prioritize to align most closely with the current standards of care for this patient?
Administer broad-spectrum antibiotics
Administer IV analgesics and antipyretics
Obtain an abdominal computed tomography (CT) scan
Prepare the patient for surgery and notify the surgical team immediately