1st April 2022

A 32-year-old woman presents to the emergency department with severe nausea and vomiting

A 32-year-old woman presents to the emergency department with severe nausea and vomiting. She is 7 weeks pregnant, and has been vomiting for the last 2 days and is now unable to tolerate liquids. There is no abdominal pain or diarrhoea, and there is no history of travel. 

She has no past medical history and is currently taking folic acid. 

On examination, she has dry mucous membranes and is apyrexial. She is hypotensive and tachycardic. 

A urine dip reveals ketones ++ and blood tests show electrolyte disturbances. 

Which is the most likely diagnosis?  

Select the SINGLE most appropriate option from the list below. Select ONE option only.