Effectiveness of integrated Chinese herbal medicine Shoutai Pill and Western medicine in the treatment of recurrent pregnancy loss: A protocol for systematic review and meta-analysis

Review question / Objective: We provide a protocol to evaluate the efficacy of integrated Shoutai Pill and Western medicine to update the evaluation for the best available and security treatment for recurrent pregnancy loss(RPL). Condition being studied: Recurrent pregnancy loss (RPL) is a distinct disorder defined by two or more consecutive pregnancy failures before 20 gestational weeks infertile couples. The incidence of this disease accounts for about 1%-5% of women of reproductive age and seriously affects their physical and psychological health. At present, the known etiology of this disease mainly includes abnormal anatomic structures, genetic abnormality, endocrine disorders, prethrombotic status, abnormal immune function, infection, etc. Excluding the above factors, approximately 40-50% of RPL remain unexplained, known as unexplained recurrent pregnancy loss (URPL). At present, the main therapeutic methods of RPL are surgical therapy, preimplantation genetic diagnosis (PGD), hormone therapy, anti-infection therapy, anticoagulation, and immunoregulatory therapy, etc. However, there is no effective treatment has been identified for URPL. Therefore, we still need to investigate effective treatments to reduce pregnancy losses and maintain successful pregnancy preservation in these patients.