Journal
JOURNAL OF THROMBOSIS AND HAEMOSTASIS
Volume 21, Issue 1, Pages 154-163Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.jtha.2022.10.019
Keywords
postpartum hemorrhage; ristocetin; thrombocytopathy; thrombocytopenia; von Willebrand factor
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This study examined the diagnostic and management approaches and outcomes in women with type 2B von Willebrand disease during pregnancy. The findings highlight the challenges and uncertainties in managing these patients, such as bleeding complications, unknown target safe VWF level, diverse hemostatic management practices, and varied views on delivery mode and anesthesia use.
Background: Management of women with type 2B von Willebrand disease (VWD) during pregnancy is challenging because of dysfunctional von Willebrand factor (VWF) and the complexity resulting from discrepant VWF/factor VIII (VWF/FVIII) levels, impaired platelet-dependent VWF activity, progressive thrombocytopenia, and risks associated with the use of desmopressin. There is a lack of high-quality evidence to support clinical decision making. Objectives: In this study, we examined the current diagnostic and management ap-proaches and outcomes in women with VWD during pregnancy. Methods: Data were collected via 3 avenues: literature review, an international reg-istry, and an international survey on physicians' practices for the management of pregnancy in women with VWD. The registry and survey were supported by the In-ternational Society on Thrombosis and Haemostasis. Results: Data on clinical and laboratory features, management and bleeding compli-cations, and pregnancy outcomes of a total of 55 pregnancies from 49 women across the globe (literature: 35, registry: 20) and data reported by 112 physicians were analyzed. We describe the largest dataset on pregnancies in women with type 2B VWD available to date. The data highlight the following key issues: a) bleeding complications remain a concern in these patients, b) the target safe VWF level and the ideal moni-toring approach are unknown, c) there is a wide range of hemostatic management practices in the type and timing of treatment, and d) physicians have diverse views on the mode of delivery and use of neuraxial anesthesia. Conclusion: We conclude that an international consensus and guidance are critically required for better care and improved outcomes in this patient cohort.
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