Final answer:
The nurse should teach the client to keep their blood sugar in good control to prevent microvascular complications of diabetes.
Step-by-step explanation:
The nurse should teach the client that keeping their blood sugar in good control is an important intervention to prevent microvascular complications of diabetes. High blood sugar can damage small blood vessels, leading to various complications such as kidney disease, eye problems, and nerve damage.
Good blood sugar control can be achieved through a combination of medication, regular exercise, and a healthy diet. By monitoring their blood sugar levels, taking prescribed medications as directed, and following a balanced meal plan, the client can significantly reduce their risk of developing microvascular complications.