Notes on ADH and Corticosteroids
Examples
- Desmopressin: Available in oral (PO) and nasal forms.
- Vasopressin: Given subcutaneously (SubQ).
Uses
- ADH Replacement: Used when patients don't have enough ADH, leading to excessive urination.
- Mechanism: Promotes water reabsorption to maintain water balance.
- Indication: Diabetes insipidus (deficiency of ADH) & bed wetting (nocturnal enuresis).
Medications for ADH Excess
- Demecyclocycline: Used to treat ADH excess.
- Indication: SIADH (Syndrome of Inappropriate Antidiuretic Hormone secretion), characterized by excessive ADH and swelling.
Glucocorticoids
- Examples: Prednisone, Cortisone, Methylprednisolone, Dexamethasone.
- Action: Anti-inflammatory response.
- Monitoring: Urine output and electrolyte levels (especially sodium).
- Expected Outcome: Decreased urine output and increased urine concentration.
- Rationale: To monitor effectiveness and prevent complications.
Side Effects (SE)
- Orthostatic hypotension (ortho-hypotension) and hypernatremia.
Important Consideration
- Taper: Gradual reduction of dosage is necessary to discontinue the medication.
- Side Effects: Review all possible side effects due to medication.
Fludrocortisone
- Class: Mineralocorticoid.
- Use: Adrenocortical insufficiency.
- Mechanism: Promotes sodium and water retention while promoting potassium excretion.
- Indications: Hypotension in some patients.
- Urine output and Electrolytes