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A 6-year-old girl weighing 20 kg is admitted with severe gastroenteritis. She was shocked on arrival and was given sodium chloride 0.9% 400 mL intravenously over fifteen minutes, after which her conscious state and perfusion normalised. She is assessed as 10 per cent dehydrated. Her serum sodium is 138 mmol/L and glucose 4.9 mmol/L, and intravenous rehydration is to continue with sodium chloride 0.9% and glucose 5%. Which one of the following total volumes should be ordered over the first 24 hours?
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