Abstract
Recent studies have suggested a unifying pathophysiological concept to explain the underlying defects of von Willebrand factor (VWF) causing von Willebrand disease (VWD) and have highlighted the relevance of simple VWF related activities in producing a useful diagnosis. A standardized bleeding history condensed into a final bleeding score and few widely available laboratory tests, such as VWF ristocetin cofactor activity, VWF antigen and factor VIII (FVIII), in the index case and in his/her relatives are of critical importance. Ristocetininduced platelet aggregation (RIPA) should also be tested. Trial with desmopressin should be carried out in patients, except those with virtual absence of VWF or with increased RIPA. Desmopressin should be used in all responsive patients as first choice. Substitutive treatment with VWF/FVIII containing products should be used in unresponsive patients, in those with heightened response to desmopressin or in those undergoing interventions requiring good hemostasis for more than 3–5 days. Special consideration should be deserved to the treatment of menorrhagia and parturition.
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