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You are caring for a 12 year old known diabetic who presents in diabetic ketoacidosis. Temperature is 37.5, HR 100, RR 24, BP 96/36, O2 sat 98% on room air. Labs show glucose 550, Na – 132, K – 2.8, pH 7.09. An initial bolus of normal saline 20 mL/kg has been given.