[Meta-analysis of Yinzhihuang oral liquid in treatment of intrahepatic cholestasis of pregnancy].

To systematically review the clinical efficacy and safety of Yinzhihuang oral liquid in the treatment of intrahepatic cholestasis of pregnancy(ICP). Literatures published by June 2016 were searched in databases, such as Medline, Pubmed, Cochrane Library, China National Knowledge Infrastructure(CNKI), Chinese Scientific Journals Full-text Database(VIP), Chinese biomedical literature database(CBM), and Wanfang Database. Randomized controlled trials(RCT) of Yinzhihuang oral liquid were collected according to the inclusion criteria, and the methodological quality of selected literatures was evaluated. The Meta-analysis was conducted by using RevMan 5.3 software. A total of 7 RCTs involving 711 patients were included. The results of Meta-analysis showed that, compared with control group, Yinzhihuang oral liquid significantly alleviated pruritus symptoms[MD=－0.68, 95%CI(－0.95,－041), P<0.000 01], reduced blood biochemical indexes including TBA[MD=－7.23, 95%CI (－10.88,－3.58), P=0.000 1], TB[MD=－1.90, 95%CI(－3.09,－0.70), P=0.002], ALT[MD=－39.08, 95%CI (－56.46,－21.70), P<0.000 1], and CG [MD=－0.71, 95%CI(－0.89,－0.52), P<0.000 01]. In the respect of pregnancy outcome, Yinzhihuang oral liquid can distinctly improve birth weight [MD=430.03, 95%CI (219.28, 640.78), P<0.000 1]. However, there was no significant difference in cesarean section rate [OR=0.93, 95%CI (0.36, 2.36), P=0.87], preterm birth rates [OR=0.63, 95%CI (0.28, 1.42), P=0.26], and neonatal asphyxia rate [OR=0.50, 95%CI (0.18, 1.43), P=0.20]. Yinzhihuang oral liquid showed better efficiency and slighter adverse reaction. However, more rigorously designed, double-blind, randomized controlled trials with large sample size and high quality are required to provide further evidences.