IV hydration
NPO
Pain management
Place NGT if patient has significant vomiting or evidence of small<unk>  distension
Antibiotics if gangrene or perforation is suspected (cover gram-negative and anaerobics)
Consult GI, surgery, IR as appropriate
Diverticular abscess: percutaneous drainage
Volvulus: endoscopic decompression
Pseudo-obstruction: endoscopic decompression
Intussusception: surgical intervention
Large bowel obstruction
Abdominal aortic aneurysm
Small bowel obstruction
Aortocaval fistula
Malignant bowel obstruction
Acute gastroenteritis
Epiploic appendagitis
Aortoenteric fisulta