A 24-year-old woman at 10 weeks of pregnancy has vomited repeatedly for three weeks and has lost 7 kg. She is alert, with a pulse of 104 beats/minute and blood pressure of 105/68 mmHg; urine contains 4+ ketones, serum potassium is 2.8 mmol/L (3.5–5.2) and serum sodium is 136 mmol/L (135–145). She has eaten very little during the past fortnight and has not received intravenous treatment. Which one of the following should be given before intravenous dextrose, if dextrose is required?
Keep going — a set of ten like this one, one at a time.
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