Abstract
Background: This study aimed to investigate the rate of coagulopathy progression in amniotic fluid embolism (AFE), using the level of fibrinogen.Methods: We examined all cases of maternal death (46 cases) related to AFE between 2010 and 2013 in Japan (total number of deliveries: 4,291,459). Fibrinogen, blood loss from AFE onset to fibrinogen measurement, and time from onset to fibrinogen measurement were investigated. The correlations of fibrinogen with time from onset to fibrinogen measurement and blood loss at fibrinogen measurement were analyzed.Results: Fibrinogen was undetectable (less than 50 mg/dL) in 14 cases (93%) and 65 mg/dL in one case (7%). All the cases involving not less than 1000 mL of blood loss or within 60 min from onset to fibrinogen measurement demonstrated low levels of fibrinogen.Conclusions: Coagulopathy in AFE was not directly proportional to bleeding. Furthermore, coagulopathy in AFE developed in a remarkably short length of time. If AFE is suspected, fibrinogen level should be measured rapidly for favoring a more AFE to decrease the risk of death from AFE. And, rapid treatment of coagulopathy can help reduce mortality from AFE.
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