Ahonen J, Jokela R, Korttila K
Department of Anaesthesia and Intensive Care, Helsinki University Hospital, Helsinki, Finland.
Acta Anaesthesiol Scand. 2007 Aug;51(7):929-36. doi: 10.1111/j.1399-6576.2007.01323.x. Epub 2007 May 4.
Empirical off-label use of recombinant activated factor VII (rFVIIa) has been reported to be effective in some cases of severe postpartum haemorrhage (PPH). Successful management of these patients has lead to more wide-spread use of rFVIIa in less severe cases without any evidence for the advantages of its administration.
Until November 2006, we had administered rFVIIa to 38 parturients. Based on our initial experience with the first 12 patients, we prepared guidelines for the use of rFVIIa. During the existence of these guidelines, we made a retrospective comparison of the 26 women who received rFVIIa with another 22 women who were treated during the same time period without using rFVIIa.
The total amount of blood loss was significantly higher (11.3 +/- 4.5 vs. 8.0 +/- 3.1 l), and the coagulation screen revealed significantly longer partial thromboplastin time (APTT) and prothrombin time (PT) values and significantly lower fibrinogen values in patients receiving rFVIIa. The need for red blood cells, platelets and fibrinogen concentrate was significantly higher in these women. Although the response was considered good in two-thirds of the women, several patients received rFVIIa with a poor or no response as a result of arterial bleeding.
The decision to use rFVIIa resulted from a more profound haemorrhage. We did not gain any evidence to extend the use of rFVIIa into less severe cases of PPH. Furthermore, this policy would result in a profound increase in the overall costs of the treatment. Randomized placebo-controlled trials are urgently needed to optimize the use of rFVIIa in obstetric haemorrhage.
据报道,经验性超说明书使用重组活化因子VII(rFVIIa)在某些严重产后出血(PPH)病例中有效。这些患者的成功治疗导致rFVIIa在不太严重的病例中得到更广泛的使用,但没有任何证据表明其使用具有优势。
直到2006年11月,我们已对38名产妇使用了rFVIIa。基于我们对前12名患者的初步经验,我们制定了rFVIIa的使用指南。在这些指南存在期间,我们对接受rFVIIa的26名女性与同期未使用rFVIIa治疗的另外22名女性进行了回顾性比较。
接受rFVIIa的患者失血量总量显著更高(11.3±4.5 vs. 8.0±3.1升),凝血筛查显示部分凝血活酶时间(APTT)和凝血酶原时间(PT)值显著延长,纤维蛋白原值显著降低。这些女性对红细胞、血小板和纤维蛋白原浓缩物的需求显著更高。尽管三分之二的女性被认为反应良好,但由于动脉出血,一些患者接受rFVIIa后反应不佳或无反应。
使用rFVIIa的决定源于更严重的出血。我们没有获得任何证据将rFVIIa的使用扩展到不太严重的PPH病例。此外,这一政策将导致治疗总成本大幅增加。迫切需要进行随机安慰剂对照试验,以优化rFVIIa在产科出血中的使用。