What finding best indicates the efficacy of insulin lispro in a one-hour reassessment?

The finding that best indicates the efficacy of insulin lispro in a one-hour reassessment is a capillary glucose level of 122 mg/dL. Insulin lispro is a rapid-acting insulin that is designed to provide quick glucose control after meals. In a clinical context, the primary goal of administering insulin is to lower elevated blood glucose levels toward a normal range.

A capillary glucose reading of 122 mg/dL suggests that the insulin is effectively lowering the blood glucose levels from a higher baseline, demonstrating the medication's efficacy in managing hyperglycemia. The function of insulin is to facilitate the uptake of glucose by cells, thereby reducing blood glucose levels.

In contrast, increased thirst and heightened anxiety could indicate hyperglycemia or dehydration but do not directly reflect the immediate effect of the insulin therapy. A stable blood pressure does not provide meaningful information about glucose levels or the effect of the insulin on glucose regulation, thus making it less relevant in assessing the efficacy of insulin lispro within the specified time frame after administration.