A nurse is caring for a client who has diabetic ketoacidosis. Which of the following manifestations should the nurse expect?

Choice A reason: An acetone odor to the breath is a hallmark sign of diabetic ketoacidosis (DKA). It results from the accumulation of ketone bodies, particularly acetone, which are exhaled and give the breath a fruity or nail-polish-like smell. This is a key diagnostic clue in DKA. Choice B reason: Malignant hypertension is not a typical manifestation of DKA. While blood pressure may fluctuate, DKA is primarily characterized by hyperglycemia, metabolic acidosis, and dehydration—not hypertensive crises. Choice C reason: Cheyne-Stokes breathing is associated with central nervous system disorders and heart failure, not DKA. In DKA, Kussmaul respirations—deep, rapid breathing—are more typical as the body attempts to compensate for metabolic acidosis. Choice D reason: DKA involves severe hyperglycemia, often with blood glucose levels above 250 mg/dL. A glucose level below 40 mg/dL indicates hypoglycemia, which is a different and potentially life-threatening condition requiring different management.