Thrombofilias and the risk of recurring pregnancy loss in a Mexican population

Background: Recurrent gestational loss (RPL) is defined by the ESHRE as the loss of 2 or more consecutive pregnancies. The objective of this study is to evaluate the relationship of Factor V Leiden (FVL, G1691A), prothrombin G20210A (PRT, G20210A), methylenetetrahydrofolate reductase G677A (MTHFR C677AT) and plasminogen activator inhibitor-1 (4G/5G) (PAI-1, 4G/5G); with recurrent gestational loss and perinatal data of Mexican women. Material and method: Retrospective, observational and cross-sectional study, which includes 277 pregnancies of 95 women and three groups were formed: 1) Control: deliveries of patients without pregnancy loss, without problems during the development of pregnancy and with a study of hereditary thrombophilias, 2) idiopathic fetal death : Deliveries of patients with idiopathic gestational loss (=1) and with study of thrombophilias, and 3) recurrent pregnancy loss. Deliveries of patients with idiopathic recurrent pregnancy loss and with study of hereditary thrombophilias; patient data was collected; age, weight and height, newborn data, weeks of gestation, weight and height, which are reported with mean ± standard error and analyzed with the student's t test, and thrombophilias, cesarean sections, deliveries and spontaneous abortions are reported in percentages and analyzed with chi2, in both cases the SPSS version 25 statistical package was used. Results: Of the 95 women included there were no significant differences in age, weight and height in the different rates of each group; one of the thrombophilias to be evaluated in the different populations, it was observed that FVL-G1691A only occurs in recurrent pregnancy loss (15.4%); the translation of homozygous and heterozygous, it was observed that FVL-G1691A only appeared in recurrent pregnancy loss, perinatal data showed a decrease in the weeks of gestation in newborns of mothers with recurrent pregnancy loss, with a decrease in weight and size. Conclusions: the presence of inherited maternal thrombophilias increases the risk of recurrent pregnancy loss, premature birth, and decreased weight and height at birth.