The nurse is developing a teaching plan for a client diagnosed with diabetes insipidus. The nurse should include information about which hormone lacking in clients with diabetes insipidus?
Correct Answer: A
Rationale: Clients with diabetes insipidus lack antidiuretic hormone (ADH), also known as vasopressin. ADH plays a crucial role in regulating the amount of water reabsorbed by the kidneys, thus maintaining the body's water balance. In diabetes insipidus, there is a deficiency or decreased response to ADH, leading to excessive urine production and consequent dehydration if not managed properly. Therefore, understanding the role and function of ADH is essential for the nurse to include in the teaching plan for a client diagnosed with diabetes insipidus.