Acute mesenteric colonic ischemia management

A 63-year-old female with a recent myocardial infarction presents with worsening abdominal pain. She was initially managed with NPO status, IV antibiotics, and anticoagulation following a CT angiography that revealed an occlusion at the origin of the superior mesenteric artery (SMA). Twenty-four hours later, there are no signs of peritonitis or hemodynamic instability, but her abdominal pain has intensified. What is the next best step in management?

1: Continue current management and observe.
2: Schedule exploratory laparotomy.
3: Initiate catheter-directed thrombolysis.
4: Perform mesenteric arteriography followed by possible endovascular intervention.