International consensus and practical guidelines on the gynecologic and obstetric management of female patients with hereditary angioedema caused by C1 inhibitor deficiency
Abstract
BACKGROUND: There are a limited number of publications on the management of gynecologic/obstetric events in female patients with hereditary angioedema caused by C1 inhibitor deficiency (HAE-C1-INH).
OBJECTIVE: We sought to elaborate guidelines for optimizing the management of gynecologic/obstetric events in female patients with HAE-C1-INH.
METHODS: A roundtable discussion took place at the 6th C1 Inhibitor Deficiency Workshop (May 2009, Budapest, Hungary). A review of related literature in English was performed.
RESULTS: Contraception: Estrogens should be avoided. Barrier methods, intrauterine devices, and progestins can be used. Pregnancy: Attenuated androgens are contraindicated and should be discontinued before attempting conception. Plasma-derived human C1 inhibitor concentrate (pdhC1INH) is preferred for acute treatment, short-term prophylaxis, or long-term prophylaxis. Tranexamic acid or virally inactivated fresh frozen plasma can be used for long-term prophylaxis if human plasma-derived C1-INH is not available. No safety data are available on icatibant, ecallantide, or recombinant human C1-INH (rhC1INH). Parturition: Complications during vaginal delivery are rare. Prophylaxis before labor and delivery might not be clinically indicated, but pdhC1INH therapeutic doses (20 U/kg) should be available. Nevertheless, each case should be treated based on HAE-C1-INH symptoms during pregnancy and previous labors. pdhC1INH prophylaxis is advised before forceps or vacuum…
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