A nurse is caring for a client in diabetic ketoacidosis (DKA). What is the priority initial treatment?

DIABETIC KETOACIDOSIS (DKA) — a life-threatening complication mainly of type 1 diabetes with hyperglycemia, ketosis, and metabolic acidosis — is treated with: (1) IV FLUIDS (the client is severely dehydrated — fluid replacement is a priority); (2) IV REGULAR INSULIN (the only insulin given IV — to lower glucose and stop ketone production); (3) ELECTROLYTE monitoring/replacement, especially POTASSIUM (insulin drives potassium into cells, causing hypokalemia — monitor closely and replace as needed). NCLEX physiological/endocrine. Signs of DKA: high glucose, fruity breath (acetone), Kussmaul respirations (deep/rapid breathing), nausea/vomiting, dehydration. Treat the underlying cause. Knowing DKA management (fluids, IV regular insulin, potassium monitoring) is a heavily tested NCLEX concept.