<prompt> Which of the following is a dynamic cause of intestinal obstruction: March 2011Gall stoneParalytic ileusMesenteric vascular obstructionOgilvie syndrome  <response>: Ans. A: Gall stoneGall stone causes dynamic ileus intraluminal causeAdynamic cause of intestinal obstruction includes 1 paralytic ileus, 2 mesenteric vascular occlusion and 3 pseudo-obstructOgilvies syndrome is acute colonic pseudo-obstruction 