The effectiveness of interventions in the prevention of perineal trauma in parturients: A systematic review with meta-analysis

To investigate the effectiveness of interventions to prevent the occurrence of perineal trauma in parturients. A bibliographic search was carried out in Cochrane Library, MEDLINE via PUBMED, LILACS via Virtual Health Library (VHL), Embase, Scopus, CINAHL, Scielo, Web of Science, and PEDro databases. Randomized clinical trials evaluating the effects of any intervention to prevent perineal trauma during pregnancy and/or childbirth were included. There were no temporal or language restrictions. The risk of bias assessment was performed using the Revised Cochrane Risk-of-bias Tool for Randomized Trials. Fifty studies, with a total of 17,221 participants, were included in this meta-analysis. No intervention during childbirth was effective for the prevention of perineal trauma (RR = 1.07, 95% CI [0.98.1.18], p