Tranexamic acid versus oxytocin for primary postpartum Haemorrhage in the out-of-hospital setting : a systematic review with implications for rural practice

Introduction: Primary postpartum haemorrhage causes approximately 25% of global maternal deaths and accounts for significant maternal morbidity. While high certainty evidence demonstrates that tranexamic acid reduces comparative blood loss in postpartum haemorrhage in hospital settings, limited data exist on the specific pharmacological management of this condition in out-of-hospital settings, and the implications for rural communities. Objective: To determine the efficacy of oxytocin compared to tranexamic acid in women suffering postpartum haemorrhage in the out-of-hospital environment. Design: A systematic review comparing evidence containing patients with postpartum haemorrhage in the out-of-hospital and/or rural setting, in which oxytocin/tranexamic acid were used. Outcome measures were comparative blood loss/haemorrhagic shock, the need for further interventions and maternal/neonatal morbidity/mortality. Findings: No randomised control trials have been conducted in an out-of-hospital environment in relation to oxytocin/tranexamic acid. In this setting, there is no difference in outcome measures when using oxytocin compared to no intervention, or oxytocin compared to standard care. Data are lacking on the effect of tranexamic acid on the same outcome measures. Discussion: Rural and out-of-hospital management of postpartum haemorrhage is limited by resource availability and practitioner availability, capacity and experience. In-hospital evidence may lack transferability, therefore direct evidence on the efficacy of pharmacological management in these contexts is scant and requires redress. Conclusion: There is no difference in blood loss, neonatal or maternal mortality or morbidity, or need for further interventions, when using oxytocin or TXA compared to no intervention, or compared to standard care, for PPH. Further studies are needed on the efficacy of these drugs, and alternate or co-drug therapies, for PPH in the out-of-hospital environment and rural clinical practice.