OASIS risk up for nulliparous women with vacuum delivery

OASIS risk up for nulliparous women with vacuum delivery
For women whose infants are delivered by vacuum extraction, the risk of obstetric anal sphincter injury is significantly higher among nulliparous women than multiparous women, according to a study published online Aug. 13 in BJOG: An International Journal of Obstetrics and Gynaecology.

(HealthDay)—For women whose infants are delivered by vacuum extraction, the risk of obstetric anal sphincter injury (OASIS) is significantly higher among nulliparous women than multiparous women, according to a study published online Aug. 13 in BJOG: An International Journal of Obstetrics and Gynaecology.

Sari Räisänen, Ph.D., from the Savonia University of Applied Sciences in Iisalmi, Finland, and colleagues investigated the risks of OASIS in a sample of 16,802 nulliparous and multiparous women delivered by vacuum extraction, using a population-based register from Finland, where episiotomy is exclusively lateral. Nulliparous and multiparous women with OASIS were compared with women without OASIS using stepwise .

The researchers found the incidence of OASIS to be significantly higher among (3.4 percent) than multiparous women (1.4 percent), with an adjusted odds ratio of 2.44. In nulliparous women, lateral episiotomy correlated with a significantly decreased incidence of OASIS (adjusted odds ratio, 0.54), but there was no significant association for multiparous women. There was an increase in the OASIS incidence (2.10-fold for nulliparae and 2.83-fold for multiparae) for a 1,000 g increase in birth weight.

"The results of the present study on women delivered by vacuum extraction provide evidence that OASIS risk incrementally decreases with each ," the authors write. "Lateral episiotomy was associated with an approximately 50 percent decreased incidence of OASIS in nulliparous women, including women admitted for a first vaginal delivery after a previous for their first birth."

More information: Abstract
Full Text (subscription or payment may be required)

add to favorites email to friend print save as pdf

Related Stories

Recommended for you

Triglycerides significantly elevated in women with GDM

Jan 29, 2015

(HealthDay)—For women with gestational diabetes mellitus (GDM), triglycerides are significantly elevated throughout pregnancy, according to a review published online Jan. 22 in BJOG: An International Jo ...

Safer childbirth for women everywhere

Jan 29, 2015

Few women in developed countries die of blood loss in childbirth, but in remote areas and developing countries, an estimated 100,000 die every year from post-partum haemorrhage. 

10 tips to prepare for pregnancy

Jan 29, 2015

For women of childbearing age looking to become pregnant, it is never too early to engage in healthy habits to ensure that she has a healthy pregnancy and her child has a healthy first step.

AAFP advocates for planned vaginal birth after cesarean

Jan 28, 2015

(HealthDay)—A planned labor and vaginal birth after cesarean (LAC/VBAC) is an appropriate option for most women with a history of prior cesarean birth, according to a clinical practice guideline published ...

Women diagnosed with PCOS twice as likely to be hospitalized

Jan 27, 2015

Women diagnosed with polycystic ovary syndrome - the most common hormone disorder in women of reproductive age - face a heightened risk of developing heart disease, diabetes, mental health conditions, reproductive disorders ...

User comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.