American EMT Academy Midterm Practice Test

Distinguishing signs between a diabetic emergency caused by high blood sugar with metabolic acidosis (DKA) and one caused by very low blood sugar (hypoglycemia) is the main idea.

DKA shows dehydration from high glucose with frequent urination, plus a breathing pattern called Kussmaul respiration as the body tries to compensate for the acid buildup. A fruity breath is a classic clue from acetone, a byproduct of fat metabolism in the setting of insulin deficiency. Hypoglycemia, on the other hand, triggers sympathetic symptoms like sweating and tremors due to adrenaline release, and can cause confusion when the brain isn’t getting enough glucose.

The other options mix up these patterns: sweating and tremors point to hypoglycemia rather than DKA, while thirst and dry mouth align more with dehydration from high glucose. Bradycardia or hypertension isn’t typical for these crises, and weight gain isn’t a hallmark of DKA, which more commonly involves weight loss from fluid loss.

So the pairing that lists dehydration, Kussmaul respirations, and fruity breath for DKA, with diaphoresis, tremor, and confusion for hypoglycemia, best fits the typical presentations.