Features of pyloric stenosis :
Correct Answer: Hypokalemic alkalosis
Description: Ans. is 'a' i.e. hypokalemic alkalosis Gastric peristalsis is seen passing from left to right across the upper abdomen. Retention vomiting means vomiting due to any mechanical obstruction occurring usually hours after ingestion of a meal. In hyperophic pyloric stenosis the vomiting usually occurs 10 to 30 min. after the feed (Though in neglected undiagnosed cases the stomach becomes dilated and the vomiting becomes regurgitant in type occurring only once or twice every 24 hrs)
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