Case Report of Umbilical Artery Thrombosis in a Patient With a History of Heparin-Induced Thrombocytopenia.

Women are at increased risk of thromboembolism during pregnancy because of hypercoagulability associated with pregnancy. Heparin-induced thrombocytopenia (HIT) is an uncommon complication of heparin therapy, and patients with histories of HIT cannot receive any heparin-derived medications. Limited data exist regarding the clinical management of pregnant women with histories of HIT. Umbilical artery thrombosis (UAT) is a rare fetal complication with significant fetal morbidity and mortality. Using the CARE guidelines, we report a case of a woman previously diagnosed with HIT who received long-term anticoagulation therapy and whose fetus developed UAT at 27 weeks gestation. The purpose of this case report is to share our successful expectant management plan of care, which centered on the woman, involved multidisciplinary collaboration, and led to a term cesarean birth.