What does this research mean for the field?

Mediolateral episiotomy during vacuum-assisted delivery in nulliparous women reduces the risk of obstetric anal sphincter injury by 50%, with the preventive effect being most pronounced when multiple intrapartum risk factors are present. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To examine the impact of mediolateral episiotomy on the occurrence of obstetric anal sphincter injury during vacuum-assisted deliveries in nulliparous women.

April 18, 2026Open Access

Episiotomy is associated with a reduced risk of obstetric anal sphincter injury in nulliparous vacuum‐assisted deliveries, particularly in high‐risk cases

Key Points

To examine the impact of mediolateral episiotomy on the occurrence of obstetric anal sphincter injury during vacuum-assisted deliveries in nulliparous women.
Analyzed nulliparous women undergoing vacuum-assisted deliveries
Compared outcomes between those with and without episiotomy
Evaluated intra-partum risk factors present during deliveries
Mediolateral episiotomy associated with a 50% reduction in obstetric anal sphincter injury
Greater preventive effect observed with multiple intrapartum risk factors

Abstract

In nulliparous women, mediolateral episiotomy during vacuum-assisted delivery was associated with a 50% reduction in OASI. The preventive effect of mediolateral episiotomy was greater when multiple intrapartum risk factors were present.

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