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J Pediatr. 2002 May;140(5):595-9.

Evaluation of high concentration intranasal and intravenous desmopressin in pediatric patients with mild hemophilia A or mild-to-moderate type 1 von Willebrand disease.

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Blood Center of Southeastern Wisconsin, Medical College of Wisconsin, Milwaukee, 53201-2178, USA.



The objective of the study was to evaluate the safety and efficacy of high-concentration intranasal desmopressin (HCIN-DDAVP) 1.5 mg/mL, in patients weighing < or = 50 kg with mild hemophilia A or mild type 1 von Willebrand disease (VWD).


This was a single-center, nonrandomized, open-label, single-dose trial of HCIN-DDAVP. Nine boys with hemophilia A, 8 girls with mild VWD, and 8 boys with mild VWD were evaluated. HCIN-DDAVP responses were compared with historic IV-DDAVP responses in 13 of the patients.


HCIN-DDAVP administration resulted in statistically significant mean increases in factor VIII procoagulant activity, ristocetin cofactor, and von Willebrand factor antigen levels in each of the 3 study groups. Mean (+/- 1 SD) increase in factor VIII procoagulant activity was 25.7 +/- 11.9 U/dL in mild hemophilia A. Ristocetin cofactor increased 108.5 +/- 53.8 U/dL in girls and 95.8 +/- 36.0 U/dL in boys with mild VWD. Intravenous desmopressin acetate responses were comparable to HCIN-DDAVP responses in patients who received both preparations. Adverse events were mild and resolved without intervention.


We conclude that administration of 150 microg of high concentration intranasal desmopressin is safe and effective in patients weighing < or = 50 kg with mild hemophilia A or mild type 1 VWD.

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