Incidence of recurrent anal sphincter rupture is 7.1 percent

Incidence of recurrent anal sphincter rupture ~7 percent
The incidence of recurrent anal sphincter rupture is 7.1 percent, and several risk factors are associated with an increased risk, including excessive birth weight, vacuum extraction, and shoulder dystocia, according to research published online Oct. 19 in BJOG: An International Journal of Obstetrics and Gynaecology.

(HealthDay)—The incidence of recurrent anal sphincter rupture (ASR) is 7.1 percent, and several risk factors are associated with an increased risk, including excessive birth weight, vacuum extraction, and shoulder dystocia, according to research published online Oct. 19 in BJOG: An International Journal of Obstetrics and Gynaecology.

Hanna Jangö, from Herlev University Hospital in Copenhagen, Denmark, and colleagues used data from the National Medical Birth Registry in Denmark to identify patients with a first and a second vaginal delivery from 1997 to 2010 and assessed the risk factors for recurrent ASR.

The researchers found that 4.6 percent of the 159,446 women experienced an ASR at first delivery and 7.1 percent had a recurrent ASR (odds ratio [OR], 5.91). The risk of recurrent ASR increased significantly with birth weight (adjusted OR, 2.94 per increasing kg); vacuum extraction (aOR, 2.96); shoulder dystocia (aOR, 1.98); delivery interval (aOR, 1.08 by year); year of second delivery (aOR, 1.06); and prior fourth-degree ASR (aOR, 1.72). correlated with significantly reduced likelihood of ASR (aOR, 0.91 per increasing cm).

"The incidence of recurrent ASR in our study population was 7.1 percent," the authors write. "Half of the patients with a recurrent ASR have risk factors, but most factors are first known at the very end of delivery. We need studies to quantify the adverse effects of after ASR in order to improve counseling and decision-making on the subsequent mode of delivery."

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

add to favorites email to friend print save as pdf

Related Stories

OASIS risk up for nulliparous women with vacuum delivery

Aug 24, 2012

(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 ...

No increase in preterm delivery with Ramadan fasting

Aug 07, 2012

(HealthDay) -- Pregnant women who fast during the month of Ramadan do not have an increased risk of preterm delivery, regardless of when during gestation the fasting occurs, according to research published ...

Recommended for you

Health law enrollment now 7.3M

4 minutes ago

The Obama administration says 7.3 million people have signed up for subsidized private health insurance under the health care law—down from 8 million reported earlier this year.

ASTRO issues second list of 'Choosing wisely' guidelines

26 minutes ago

(HealthDay)—The American Society for Radiation Oncology (ASTRO) has released a second list of five radiation oncology-specific treatments that should be discussed before being prescribed, as part of the ...

Bill Gates says progress made on new super-thin condom

1 hour ago

Billionaire philanthropist Bill Gates said Thursday progress is being made on developing a "next-generation" ultra-thin, skin-like condom that could offer better sexual pleasure, help population control and ...

User comments