Diabetic ketoacidosis (DKA) typically causes TACHYCARDIA as a compensatory response to volume depletion and metabolic acidosis, not bradycardia. Bradycardia would be an unexpected and unusual finding in DKA. The other options are classic features: tachypnea (Kussmaul respirations to compensate for acidosis), abdominal pain (common symptom), and dehydration (due to osmotic diuresis).