<prompt> A 3 week old child with projectile postprandial vomiting is diagnosed of having hyperophic pyloric stenosis. Congenital hyperophic pyloric stenosis is associated with:Hypokalemic acidosisHypokalemic alkalosisHyperkalemic acidosisHyperkalemic alkalosis  <response>: Laboratory Findings of congenital hyperophic pyloric stenosis: Hypochloremic alkalosis with potassium depletion are the classic metabolic findings, though low chloride may be seen. Dehydration causes elevated hemoglobin and hematocrit. Mild unconjugated bilirubinemia occurs in 2-5 of cases. Ref: Sundaram S.S., Hoffenberg E.J., Kramer R.E., Sondheimer J.M., Furuta G.T. 2012. Chapter 21. Gastrointestinal Tract. In W.W. Hay, Jr., M.J. Levin, R.R. Deterding, J.J. Ross, J.M. Sondheimer Eds, CURRENT Diagnosis Treatment: Pediatrics, 21e. 