A nurse is collecting data from a client who has diabetes mellitus. Which of the following findings indicates that the client is experiencing DKA?

A. Confusion: Confusion can occur in severe diabetic ketoacidosis but is a later or less specific sign and may reflect multiple causes. B. Clammy skin: Clammy, diaphoretic skin is more characteristic of hypoglycemia rather than DKA. C. Polydipsia: Excessive thirst from osmotic diuresis is a classic and early manifestation of hyperglycemia and diabetic ketoacidosis. D. Rapid pulse: Tachycardia often accompanies dehydration in DKA, but polydipsia is a more hallmark presenting symptom.