Diagnosis and Management of Acute Obstetrical DIC

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Abstract
Obstetrical disseminated intravascular coagulation (DIC) is usually a very acute, serious complication of pregnancy. The DIC diagnostic criteria in obstetrics (the obstetrical DIC score) help with making a prompt diagnosis and starting treatment early. These DIC diagnostic criteria, in which higher scores are given for clinical parameters than for laboratory parameters, have three components: (1) the underlying disease, (2) clinical symptoms, and (3) laboratory findings. It is justified that it is appropriate to initiate therapy for DIC when the obstetrical DIC score reaches 8 points or more before obtaining the results of coagulation tests. Management: (1) Control of the underlying disease: because prolongation of exposure to the triggering factors worsens DIC, it is important to eliminate the etiologic factors as rapidly as possible. Elimination of the cause of DIC can be easily performed in obstetrics, for example, by cesarean section. (2) Antithrombin (AT) therapy: AT monotherapy (1500 to 3000 units/day, 2 days) is preferably employed instead of heparin monotherapy or heparin-AT therapy because of the hemorrhagic side effects of heparin. (3) Synthetic serine protease inhibitors: continuous infusion of gabexate mesilate (FOY℗) or nafamostat mesilate (FUT℗) is effective for DIC. Controlled multicenter trials showed a significant improvement not only in clinical response but also in platelet counts and prothrombin time (PT) in the AT group compared with the FOY group. (4) Activated protein C (APC) can inhibit thrombin generation and accelerate fibrinolytic activity. APC (5000 to 10,000 units) is administered for 2 days in patients with placental abruption complicated by DIC. APC is a very safe, effective, and useful agent for the treatment of DIC.

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