Regarding acute intestinal obstruction, what is (are) the correct information?
A functional occlusion may be caused by a hydroelectrolyte disorder
A peritoneal flange can lead to occlusion by strangulation
Strangulation obstruction threatens the vitality of the intestine within hours
Abdominal CT with contrast product injection is the gold standard examination.
Colon cancer is the leading cause of colonic obstruction due to obstruction