Effects of early factor XIII replacement in postpartum hae morrhage: study protocol for a multicentre, open-label, randomised, controlled, investigator-initiated trial

作者：Christian Haslinger, Torsten Hothorn, Verena Boßung, Stylianos Kalimeris, Elisabetta Ranieri, Nicole Ochsenbein‐Kölble, Wolfgang Korte · 发表于：BMJ Open · 年份：2025 · DOI：10.1136/bmjopen-2025-100262 · 被引用次数：4 · 研究领域：Blood properties and coagulation、Trauma, Hemostasis, Coagulopathy, Resuscitation、Coagulation, Bradykinin, Polyphosphates, and Angioedema

INTRODUCTION: The primary objective of this trial is to evaluate the effect of replenishing coagulation factor XIII (FXIII) in women with postpartum haemorrhage (PPH) on measured blood loss (MBL). Based on earlier research, we hypothesise that the administration of FXIII leads to a significant reduction in postpartum blood loss. METHODS AND ANALYSIS: This is a randomised, controlled trial that will allocate eligible patients in the event of a PPH and after receiving tranexamic acid either to the treatment group, receiving FXIII, or to the control group (standard of care). The primary endpoint is the MBL within 24 hours using a standardised method. For the primary analysis, estimation of the OR under a proportional odds assumption is conducted simultaneously for all possible cut-off points. A corresponding estimate, along with a two-sided 95% CI and two-sided p value against the null hypothesis OR=1, is obtained from the Continuous Outcome Logistic Regression model. More than 7000 patients will be screened in order to include a total of 988 eligible patients into the trial. Secondary outcomes include the rate of adverse maternal outcomes related to PPH, the rate of women breastfeeding after PPH and the safety of the administration of FXIII in women with PPH. Dynamics of blood coagulation factors in women with PPH and their association with MBL will be assessed in specific centres. A preliminary overview on costs and potential savings through early treatment of PPH with FXIII i...