A 10-year-old boy has had four episodes of vomiting over the past 24 hours. During the past 8 weeks, he has had increased urinary frequency and has been drinking large quantities of fluids; he has had a 10-pound weight loss during this time. His breath has a fruity odor. Which of the following is most likely to be seen in this patient?
Decreased carnitine shuttle activity
Decreased β-hydroxybutyrate
Hypokalemia
Increased malonyl-CoA synthesis
Increased tidal volume
