DDAVP Challenges in 170 Children With von Willebrand Disease: Response Classification Varies According to Criteria Used.
INTRODUCTION Individuals diagnosed with types 1/1C/2A/2M von Willebrand disease (VWD) typically undergo a desmopressin (DDAVP) challenge to assess therapeutic benefit. This involves measuring von Willebrand factor antigen (VWF:Ag), activity (VWF:Act; VWF:RCo/VWF:GPIbM/VWF:Ab), and coagulant factor VIII (FVIII:C) levels...