A nurse is in a provider's office is collecting data from an older adult client who has type 2 diabetes mellitus. Which of the following findings is a manifestation of hyperglycemia?

A. This finding is not indicative of hyperglycemia. A random blood glucose level of 126 mg/dL is only mildly elevated and may be acceptable depending on timing and clinical context. Hyperglycemia is typically reflected by significantly higher glucose levels, often well above 180 mg/dL, especially when associated with symptoms. B. This is incorrect. Hyperglycemia usually causes polyuria (increased urine output), not decreased output. Elevated blood glucose levels lead to osmotic diuresis as glucose spills into the urine, pulling water with it. C. This is the correct answer. Chronic hyperglycemia impairs circulation, reduces immune function, and interferes with tissue repair. As a result, clients with poorly controlled diabetes often experience delayed or poor wound healing, making this a classic manifestation of hyperglycemia. D. This finding is more commonly associated with hypoglycemia, not hyperglycemia. Low blood glucose can trigger adrenergic responses such as sweating, pallor, and clammy skin, whereas hyperglycemia is more often associated with dry skin and dehydration.