This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
Metabolic alkalosis is seen in all except : 
Select and explain. 
A. Thaizide diuretic therapy, B. Prolonged vomiting, C. Uretero-sigmoidostomy, D. Cushing's disease
C: Uretero-sigmoidostomy
Answer: C: Uretero-sigmoidostomy 
Explanation: Answer is C (Uretero-sigmoidostomy): Ureterosigmoidostomy is a cause for normal anion gap type M eta bolic acidosis produced due to loss of bicarbonate in feces. All other options mentioned in the question are causes of metabolic alkalosis.