Specimen Name Result Units Range
Plasma Sodium 131 mmol/L (135-145)
Potassium 2.1 mmol/L (3.5-5.5)
Chloride 76 mmol/L (100-109)
Bicarbonate 40 mmol/L (22-32)
Urea 36 mmol/L (2.7-7.2)
Creatinine 520 μmol/L (60-110)
ABG pH 7.58 (7.36-7.44)
PaO2 51 mmHg (70-100)
PaCO2 45 mmHg (35-45)
HCO3- 41 mmol/L (21-26)
Urine Sodium 25 mmol/L (> 20)
Chloride 10 mmol/L
Creatinine 32 μmol/L

Infant with vomiting.

What is the acid-base disturbance?

What is the likely cause?