What is an important factor to monitor in clients who have received insulin therapy?

Monitoring blood glucose levels is crucial for clients who have received insulin therapy because insulin lowers blood glucose. After administration of insulin, it's essential to check the patient's blood glucose level frequently to ensure it remains within a target range. This helps to prevent both hyperglycemia (high blood sugar) and hypoglycemia (low blood sugar), which can occur if the insulin dose is too high or if the patient does not eat enough carbohydrates after receiving insulin. By tracking blood glucose levels, healthcare providers can make informed decisions about insulin dosing and other management strategies, ensuring effective diabetes control and reducing the risk of complications.

The other factors, such as body temperature, heart rate, and blood pressure, are important in their contexts but are not as directly linked to the immediate effects of insulin therapy.