Most can be discharged
Admit
Unable to tolerate PO
Hemodynamic instability
Significant comorbidities
Unable to tolerate PO
Hemodynamic instability
Significant comorbidities
Bacterial gastroenteritis
Abdominal aortic aneurysm
Viral gastroenteritis
Aortocaval fistula
Acute gastroenteritis 
Acute gastroenteritis
Aortoenteric fisulta
HIV diarrhea