A nurse performs a capillary blood glucose check for a client who has type 1 diabetes mellitus and obtains a reading of 64 mg/dL on the glucometer. Which of the following assessment findings should the nurse expect?

The correct answer is C: Nervousness. A blood glucose level of 64 mg/dL is considered hypoglycemic in a client with type 1 diabetes. Hypoglycemia can cause symptoms such as nervousness, shakiness, sweating, and anxiety. These symptoms result from the brain not receiving enough glucose for energy production, leading to a sympathetic nervous system response. The other options are incorrect because: A: Warm skin is not typically associated with hypoglycemia; B: Tachypnea is more commonly seen in conditions like respiratory distress or metabolic acidosis; D: Ketonuria is a sign of diabetic ketoacidosis, which is more common in hyperglycemic states.