Hyperemesis gravidarum

• History / PE:
  Presents between 4-10 weeks
  Ketonuria, weight loss, and persistent vomiting
• Diagnosis:
  Metabolic alkalosis with respiratory compensation (hypercapnia)
• Differential Diagnosis:
  Choriocarcinoma and hydatiform mole (measure quantitative beta-HCG, if elevated do U/S)