27. PREDICTIVE VALUE OF LACTATE DEHYDROGENASE FOR POOR MATERNAL AND PERINATAL OUTCOMES IN PATIENTS WITH PRE-ECLAMPSIA: A META-ANALYSIS

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Background: A large number of studies have reported the relationships between serum lactate dehydrogenase (LDH) and prognosis of pre-eclampsia. However, the result is still controversial and no consensus has been reached. Objective: The aim of the study was to find out the role of serum LDH in prediction of poor maternal and perinatal outcomes in patients with pre-eclampsia. Methods: We performed a systematic computerized search for eligible articles from PubMed, Europe PMC, ProQuest, EBSCOhost, and Google Scholar databases from inception to January 2021. The pooled odds ratio (OR) and 95% confidence intervals (CIs) of all events of interest and event-free subjects were obtained to assess the predictive value of serum LDH in predicting composite poor outcomes. Results: A total of 11 studies that assessed patients with pre-eclampsia were included. Overall, elevated serum LDH level in pre-eclamptic patients was associated with poor maternal and perinatal outcomes [pooled OR: 7.92 (95% CI = 5.75–10.93); pooled OR: 8.08 (95% CI = 4.40–14.83) respectively]. Subgroup analyses showed that elevated LDH also increased risk of placental abruption, disseminated intravascular coagulation, acute renal failure, eclampsia, and HELLP syndrome. The resulting P-value showed no heterogeneity among articles (P > 0.01). No evidence of asymmetry was shown in the funnel plot, thus no publication bias existed in the included studies. Conclusions: This meta-analysis demonstrates that elevated serum LDH level is apparently associated with poor outcomes in patients with pre-eclampsia and serum LDH could be a prognostic biomarker for pre-eclamptic patients.