Importance of Individual Elements for Perineal Protection in Childbirth: An Interventional, Prospective Trial

AJP Rep 2018; 08: e289-e294
DOI: 10.1055/s-0038-1675352

Objective To analyze the association between each element of a hands-on intervention in childbirth and the incidence of obstetric anal sphincter injuries (OASIS). Study Design We conducted a prospective, interventional quality improvement project and implemented a care bundle with five elements at an obstetric department in Denmark with 3,000 deliveries annually. We aimed at reducing the incidence of OASIS. In the preintervention period, 355 vaginally delivering nulliparous women were included. Similarly, 1,622 nulliparous women were included in the intervention period. The association of each element with the outcome was estimated using a regression analysis. Results The incidence of OASIS went down from 7.0 to 3.4% among nulliparous women delivering vaginally (p = 0.003; relative risk = 0.48; 95% confidence interval [CI]: 0.30–0.76). Number needed to treat was 28. Logistic regression analysis showed that using hand on the head of the child significantly reduced the risk of OASIS (odds ratio = 0.28; 95% CI: 0.14–0.58). Conclusion Using a quality improvement framework, we documented the individual elements of the intervention. Hand on the infant's head reduced the risk of OASIS.
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