Which of the following is NOT a sign or symptom of DKA?

Hypotension is not a direct sign or symptom of diabetic ketoacidosis (DKA) in the context that the other options represent more specific manifestations of the condition. DKA typically presents with several hallmark signs and symptoms due to severe insulin deficiency and resultant metabolic derangements.

Dehydration occurs as a result of osmotic diuresis due to high blood glucose levels, leading to significant fluid loss. Kussmaul respirations are observed as a compensatory mechanism in response to metabolic acidosis, which is a central feature of DKA. These deep, labored breaths help the body to blow off excess carbon dioxide in an attempt to normalize the acid-base balance. Acetone breath, also characterized by a fruity odor, is caused by the presence of ketone bodies, which accumulate during fat metabolism when glucose isn’t adequately utilized.

While hypotension can occur in DKA due to severe dehydration and fluid loss, it is not considered a primary or hallmark symptom like the others listed. Thus, it is reasonable to identify hypotension as the answer that does not belong within the core signs and symptoms of DKA.