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ModerateEndocrinologyDiabetic ketoacidosisuk-plab-1

A 22-year-old man with type 1 diabetes presents with abdominal pain, vomiting and polyuria. His capillary glucose is 28 mmol/L, venous pH 7.12 and ketones 5.6 mmol/L. He is tachycardic and mildly hypotensive. What is the single most appropriate initial management step?

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