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Apr 2015, Vol 3, Issue 2
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Original Article
Perineal Trauma in Primiparous Women with Spontaneous Vaginal Delivery: Episiotomy or Second Degree Perineal Tear?
Irene Mora-Hervás1, Emília Sánchez2, Francisco Carmona3, Montserrat Espuña-Pons3
1Department of Obstetrics and Gynecology, Igualada Hospital, Igualada (Barcelona), Spain
2Blanquerna School of Health Science, Universitat Ramon Llull, Barcelona, Spain
3Department of Obstetrics and Gynecology, Clínic Hospital, Barcelona, Spain

IJWHR 2015; 3: 084-088
DOI: 10.15296/ijwhr.2015.16
Viewed : 4453 times
Downloaded : 5070 times.

Keywords : Episiotomy, Parity, Vaginal birth
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Abstract
Objectives: To estimate the incidence of perineal trauma in primiparous women with spontaneous vaginal delivery and to identify the factors associated with second-degree lacerations.

Materials and Methods: A subset analysis of women with spontaneous vaginal deliveries (n=489) from an institutional review board-approved parent study in healthy, nulliparous, continent pregnant women, attending the public health care system of Catalonia (northeast Spain). Primary outcome measure was perineal trauma according to the RCOG classification. For the bivariate analysis, the Student?s t-test, ANOVA and the chi-squared test, or the corresponding non-parametric tests were used. Rates, relative risks and odds ratios (multivariate analysis) were estimated along with 95% confidence intervals (CI).

Results: About 91% (95% CI: 88-93%) of women with vaginal deliveries showed some degree of perineal trauma. Nulliparous women with spontaneous deliveries who did not undergo an episiotomy were 9 times more likely to present a tear (any grade) than those who received an episiotomy [Relative risks (RR) = 9.6, 95% CI: 6.3%-14.6%, P<0.001]. Only episiotomy reached statistical significance in bivariate and multivariate analyses (P<0.0001), revealing the protective effect of episiotomy respect to second-degree tear.

Conclusion: The absence of episiotomy was the only variable independently associated with second degree perineal tears, showing a clear protective effect.

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