Final answer:
When assessing a patient suspected of having diabetes insipidus, it is important to frequently assess for the complication of hyponatremia.
Step-by-step explanation:
If a patient is suspected of having diabetes insipidus, a complication that you should frequently assess is hyponatremia. Diabetes insipidus is a condition characterized by the inability to concentrate urine, leading to excessive thirst and frequent urination. This can result in an imbalance of electrolytes, particularly sodium, in the body.