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DESMOPRESSIN (DDAVP ®)
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Standard Dilutions [Amount of drug] [Infusion volume] [Infusion rate]
|[0 to 35 mcg] [50 ml] [15 - 30min]|
Stability / Miscellaneous
Indications: Hemophilia (increases factor VIII levels): 0.3 mcg/kg in 50ml normal saline over 15-30 minutes.
Greatly enhanced ADH activity. Less vasopressor activity. Longer DOA. (Synthetic analog of vasopressin-posterior pituitary hormone).
ADH activity : Pressor activity [DDAVP: 2000-4000: 1 Vasopressin: 1:1]
Particular attention should be paid to the possibility of the rare occurrence of an extreme decrease in plasma osmolality that may result in seizures which could lead to coma.
Desmopressin acetate should not be used to treat patients with Type IIB von Willebrand’s disease since platelet aggregation may be induced.
DOSAGE AND ADMINISTRATION
The necessity for repeat administration of desmopressin acetate or use of any blood products for hemostasis should be determined by laboratory response as well as the clinical condition of the patient. The tendency toward tachyphylaxis (lessening of response) with repeated administration given more frequently than every 48 hours should be considered in treating each patient.
Diabetes Insipidus: This formulation is administered subcutaneously or by direct intravenous injection. Desmopressin Acetate Injection 4 mcg/mL dosage must be determined for each patient and adjusted according to the pattern of response. Response should be estimated by two parameters: adequate duration of sleep and adequate, not excessive, water turnover.
The usual dosage range in adults is 0.5 mL (2 mcg) to 1 mL (4 mcg) daily, administered intravenously or subcutaneously, usually in two divided doses. The morning and evening doses should be separately adjusted for an adequate diurnal rhythm of water turnover. For patients who have been controlled on intranasal desmopressin acetate and who must be switched to the injection form, either because of poor intranasal absorption or because of the need for surgery, the comparable antidiuretic dose of the injection is about one-tenth the intranasal dose.
Parenteral drug products should be inspected visually for particulate matter and discoloration prior to administration whenever solution and container permit.
KEEP REFRIGERATED AT 2° to 8°C (36° to 46°F).