ArticleJournal of clinical medicine2022
Substantial Obstetric Anal Sphincter Injury during Vacuum Assisted Delivery: An Obstetrical Issue or Device Related?
Article in Journal of clinical medicine, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed, 7 citations in OpenAlex.
- The impact of advanced maternal age on the risk of perineal and anal sphincter injuries in nulliparous women.International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics · 2026Article
- Episiotomy is associated with a reduced risk of obstetric anal sphincter injury in nulliparous vacuum-assisted deliveries, particularly in high-risk cases.Acta obstetricia et gynecologica Scandinavica · 2026Article
- Impact of gestational weight gain on perineal injury and obstetric anal sphincter injury among underweight primiparous women.International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics · 2026Article
- The role of fetal viability in perineal and anal sphincter injury: Insights from a large cohort study.International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics · 2026Article
- The association between epidural analgesia and perineal injury in primiparous women: A propensity score-matched cohort study.International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics · 2026Article
- Obstetric Anal Sphincter Injuries: Risk Factors, Pelvic Floor Dysfunction, and Quality of Life Outcomes.Medicina (Kaunas, Lithuania) · 2026Article
- Impact of maternal age on the risk of perineal injury and obstetric anal sphincter injury in nulliparous women.Archives of gynecology and obstetrics · 2026Article
- Factors associated with severe obstetric anal sphincter injury following vaginal delivery.BMC pregnancy and childbirth · 2025Article
Corrections and comments
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Authors and funding
6 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundObstetric anal sphincter injuries (OASIS) might be associated with long-term urinary and anorectal morbidities. The aim of the study was to investigate the risk factors and clinical implications of OASIS associated with vacuum-assisted deliveries versus normal vaginal deliveries.
methodsA series of 413 consecutive OASIS cases were retrospectively analyzed. A comparison was made between OASIS cases diagnosed following vacuum-assisted deliveries versus OASIS cases diagnosed following normal vaginal deliveries. Multivariable analysis was used to study the association between vacuum-assisted deliveries and superficial (3A and 3B) versus deep (3C and 4) perineal tears.
resultsThe study population comprised 88,123 singleton vaginal deliveries. Diagnosis of OASIS was made in 413 women (0.47% of the total cohort), 379 (91.8%) of whom had third-degree tears and 34 (8.2%) of whom had fourth-degree tears. Among the 7410 vacuum-assisted deliveries, 102 (1.37%) had OASIS, whereas, among the 80,713 normal vaginal deliveries, only 311 (0.39%) had OASIS. In a multivariate analysis, only vacuum-assisted delivery was found to be associated with a significant risk of deeper (3C or 4) perineal tears (OR = 1.72; 95% CI 1.02-2.91;
conclusionsVacuum-assisted instrumental intervention is a significant risk factor for OASIS and especially for deeper tears, independent of other maternal and obstetric risk factors.
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