A 21 year – old woman complaining of progressive polyphagia, polydipsia and polyuria in the last month, presents to the Emergency Department complaining of abdominal pain and vomiting. ┬áHer arterial blood gas shows:
pH 6.85
PaCO2 0.99 kPa (7.42 mmHg)
PaO2 21.6 kPa (162 mmHg)
HCO3 4.3 mmol/l
Na: 137 mmol/l
K: 3.6 mmol/l
Cl: 120 mmol/l
BE: -29.8 mmol/l

Which of the following statements is/are correct?: