When should a nurse expect to see the onset of action for a client who received intermediate-acting insulin at 0800?

The onset of action for intermediate-acting insulin, such as NPH, typically occurs within 1 to 2 hours after administration. Given that the client received the insulin at 0800, it is expected that the effects of the insulin will start to manifest during the time frame of 0900 to 1000. This aligns with the pharmacokinetics of intermediate-acting insulin, which allows for more stable glucose control after the initial peak associated with rapid-acting insulins.

The early time frame chosen indicates that the nurse should monitor for the signs of glucose regulation as the insulin begins to take effect after administration. Recognizing the typical onset time is crucial for timely interventions regarding a client's blood glucose levels, such as offering food or adjusting the insulin dosage as necessary.