<prompt> Investigation that is done for intestinal obstruction is?Chest X RayX ray abdomen supineX ray abdomen lateralBarium meal  <response>: ANSWER B X ray abdomen supineREF: Sabiston 17th edition page 1357, Bailey love 24th edition page 1189Investigations for intestinal obstruction:X ray: according to bailey: supine abdominal films are preferred. According to sabiston erect and supine views are preferredBarium studies: done for large bowel obstruction and contraindicated in acute obstructionCT scan: helpful in identifying location and cause of obstruction. 