Nursing management of patients with renal and urinary disorders. Definition/key terms ••> 1) Explain/define antidiuretic hormone. Describe antidiuretic hormone. => Another name of antidiuretic hormone hormone is Arginine vasopressin {( Avp ) Arginine vasopressin). } => Antidiuretic hormone is secreted from the posterior pituitary gland and is responsible for the reabsorption of excess water by the kidneys. => Antidiuretic hormone plays an important role in maintaining water balance in the