A 14-year-old boy presents with polyuria and polydipsia following a traumatic brain injury. Vital signs show HR 88/min, BP 118/76 mmHg, RR 16/min. Serum sodium is 148 mEq/L; urine osmolality is 210 mOsm/kg despite elevated serum osmolality. Water deprivation test is performed. Following administration of an ADH analog, urine osmolality increases substantially to 580 mOsm/kg. There is no history of recent nephrogenic medications. Which drug was administered?
- A)Tolvaptan
- B)Demeclocycline
- C)Oxytocin
- D)DesmopressinGABARITO
- E)Hydrocortisone
Explicação
Desmopressin is an ADH analog used in central diabetes insipidus and produces a marked increase in urine osmolality when ADH deficiency is the cause. It is also used in von Willebrand disease and mild hemophilia A because it increases release of vWF and factor... Ver explicação completa e trilha adaptativa →