Episiotomies Declined Despite Few Benefits: Study

by Ramya Rachamanti on  October 22, 2019 at 5:57 PM Women Health News
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Episiotomy practice is beneficial for assisted births like forceps delivery, although it may cause severe tears for unassisted deliveries, according to the study published in Canadian Medical Association Journal.
Episiotomies Declined Despite Few Benefits: Study
Episiotomies Declined Despite Few Benefits: Study

Episiotomy -- a surgical cut that helps widen the birth canal -- is intended to aid childbirth and minimize injury to the perineum, the area between the anus and the vulva.

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Episiotomy was once considered routine, but its use began to decline in the 1990s when a series of studies revealed the practice was not only ineffective at protecting women from injury, but actually increased pain and extended recovery time.

However, this finding applied only to vaginal deliveries that did not need assistance by forceps or vacuum -- instruments that are used to help with the delivery of a baby when problems arise.

"The pronounced decrease in the episiotomy rate among vaginal deliveries assisted by instruments suggests that this may be an example of 'clinical creep,' where the recommendation to move away from routine episiotomy among unassisted vaginal deliveries may have been overgeneralized to apply to all vaginal deliveries, including those where instruments are involved and where there may be a benefit," says the study's lead author Dr. Giulia Muraca, a Postdoctoral Fellow with UBC's Department of Obstetrics and Gynaecology and with the Clinical Epidemiology Unit at the Karolinska Institute in Stockholm, Sweden.

For the study, researchers used data provided by the Canadian Institute for Health Information to analyze trends in episiotomy use in more than 2.5 million births in Canada between 2004 and 2017. They found that overall, the rate of episiotomy is declining among both unassisted and assisted deliveries, despite the fact that episiotomy can protect against severe tears among women in the latter group.

The researchers also examined the relationship between episiotomy and obstetric anal sphincter injury (OASI), a condition characterized by severe tears to the perineum. Severe tears in this area can lead to short-term and long-term pain, infection, sexual problems and incontinence.

In Canada and other industrialized countries, the rate of OASI has increased by up to 15 per cent in recent years. In 2017 alone, about 18 per cent of women in Canada were diagnosed with OASI after a delivery with forceps or vacuum.

Episiotomy was associated with up to a 42 per cent reduction in risk of OASI among women who had delivered vaginally for the first time.

The findings suggest that obstetricians should be cautious of applying the same episiotomy guidelines to all patients, said Dr. Muraca.

"Generalizing the episiotomy guidelines for all vaginal deliveries can cause harm, particularly in women delivering their first child and in women having a vaginal birth after caesarean section," she said.

Source: Eurekalert

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