• Shigetaka Matsunaga, Yasushi Takai, Eishin Nakamura, Sumiko Era, Yoshihisa Ono, Koji Yamamoto, Hiroo Maeda, and Hiroyuki Seki.
• Center for Maternal, Foetal and Neonatal Medicine, Saitama Medical Centre, Saitama Medical University, Kawagoe, Japan.
• Sci Rep. 2017 Apr 24; 7: 46749.

AbstractMassive obstetric haemorrhage remains a major cause of maternal death attributable to hypofibrinogenaemia. Transfusion of large volumes of fresh frozen plasma (FFP) is required to normalise fibrinogen levels. We compared the efficacy of FFP (F group) with that of FFP plus fibrinogen concentrate (F + F group) in massive obstetric haemorrhage. In this retrospective study, we compared the medical charts (2004-2016) of 137 patients with <150 mg/dl fibrinogen treated with F + F (n = 47; after August 2009) or F (n = 56; before August 2009). Although fibrinogen concentrate was only administered in severe cases, the FFP/red blood cell concentrate (RCC) ratio was significantly lower in the F + F group than in the F group. A sub-group analysis of cases requiring ≥18 RCC units showed that the F + F group received significantly less FFP than the F group (40.2 ± 19.6 versus 53.4 ± 18.5 units; P = 0.047) and showed significantly less pulmonary oedema (24.0% vs 57.1%; P < 0.05) in the absence of any significant differences in pre-transfusion coagulation, estimated blood loss, or RCC transfusion volume. Administration of fibrinogen concentrate increased the rate of fibrinogen supplementation five-fold and reduced FFP dosage, the FFP/RCC ratio, and the incidence of pulmonary oedema.

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