Surgery General 6d255142 Antral obstruction with vomiting is NOT characterised by: A Hypokalemia B Hypochloremia C Acidosis D Hyponatremia High-Yield Explanation Repeated vomiting leads to hypochloremic, hypokalemic metabolic alkalosis. Acidosis is not seen. Ref: Schwaz 9/e, Page 1426; Nelson 17/e, Page 1229.