<prompt> Most impoant cause of abdominal distension in intestinal obstruction -Cases produced by bacterial activityCases diffused from bloodSwallowed airProducts of digestion  <response>: Ans. is c i.e., Swallowed air o In intestinal obstruction distension of the intestine is caused by accumulation of gas and fluid proximal to and within the obstructed segmented. o 70-80 of this intestinal gas consists of swallowed air. 