How long after insulin administration should a nurse monitor for potential hypoglycemia?

Monitoring for potential hypoglycemia after insulin administration is crucial due to the onset of action of insulin, which helps regulate blood glucose levels. Insulin typically starts to lower blood glucose within about 30 minutes, with its peak action occurring generally around 60 to 90 minutes after administration, depending on the type of insulin used.

The rationale for monitoring at 60 minutes is particularly important because this timeframe aligns with the peak effect of many short-acting insulins. During this peak period, the risk of blood glucose levels dropping too low is heightened. Therefore, a nurse should closely observe the patient around this time, since this is when hypoglycemic symptoms may first present, allowing for timely interventions to prevent adverse effects. This 60-minute window provides a balanced approach to catching potential hypoglycemia without waiting too long after the insulin has taken effect.