Socio-historical evolution of the episiotomy practice: A literature review.

Episiotomy is an enlargement of the vaginal orifice made by a surgical incision of the perineum. This review aimed to provide a socio-historical retrospective on the practice or episiotomy. Using the criteria from the PRISMA guidelines, the authors conducted a literature review, browsing twenty databases and several papers available in the gray literature. Sixty-four articles, seven reports, and fifteen books were selected. Through this study, four eras with different approaches to episiotomy practice could be identified: 1792-1920, 1920-1980, 1980-1996, and 1996-2018. This review shows that institutionalization and medicalization of birth lead to a systematic practice of episiotomy in many westernized countries until 1996. Lay questioning and evidence-based medicine may have reversed this trend into a restrictive practice. After making an inventory of the factors associated with the evolution of change in the rate of episiotomies, the review finally revealed that evolution of the practice of episiotomy has also been influenced by ideological, political, and social factors.