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Wednesday, April 24, 2019

PEDIATRIC PEARLS: How to differentiate pyloric stenosis from adrenal insufficiency?

How to differentiate pyloric stenosis from adrenal insufficiency? 

In pyloric stenosis there is hypochloremic metabolic alkalosis; low Na, low cl, normal K (total body K is low); high pH , high CO2, high HCO3 (> 30 mEq/dL).


In adrenal insufficiency, patients have vomiting, but no palpable abdominal mass and there is presence of metabolic acidosis, high serum K, low serum Na, and elevated urinary Na excretion.

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