Featured Research

from universities, journals, and other organizations

Elective Caesareans Carry Increased Risk Of Breathing Problems

Date:
December 14, 2007
Source:
BMJ-British Medical Journal
Summary:
Babies delivered by elective caesarean section around term carry up to a fourfold increased risk of breathing problems compared with babies delivered vaginally or by emergency caesarean section, concludes a study from Denmark.

Babies delivered by elective caesarean section around term carry up to a fourfold increased risk of breathing problems compared with babies delivered vaginally or by emergency caesarean section, concludes a study from Denmark published on the British Medical Journal website.

Related Articles


The rate of delivery by elective caesarean section is increasing. Previous studies have shown that elective caesareans are linked to an increased risk of newborn respiratory problems.

The exact reasons for this are unknown, but one explanation is that hormonal and physiological changes associated with labour are necessary for lungs to mature and that these changes may not be present in infants delivered by elective caesarean section. Gestational age at the time of elective caesarean section may also be important.

So researchers at Aarhus University Hospital in Denmark investigated the association between elective caesarean sections and newborn respiratory problems. They also analysed the importance of timing of elective caesarean sections.

Over 34,000 live born singleton babies without birth defects and with gestational ages of 37 to 41 weeks were included in the main analysis. Deliveries were categorised into two groups: elective caesarean section and intended vaginal delivery (i.e. all vaginal deliveries and emergency caesarean sections).

Factors that could affect the results, such as maternal smoking and alcohol intake during pregnancy, maternal body mass index, maternal age and education, were also taken into account.

2,687 infants were delivered by elective caesarean section. Compared with infants intended for vaginal delivery, infants delivered by elective caesarean section were found to have an increased risk of general respiratory problems.

This risk increased the earlier the caesarean was performed. A nearly fourfold increased risk was found at 37 weeks gestation, a threefold increase in risk at 38 weeks gestation, and a doubling of risk in infants delivered at 39 weeks gestation. Adjusting for maternal factors had little effect.

For example, at 37 weeks, 2.8% of infants delivered by intended vaginal delivery had general respiratory problems compared to 10% of infants delivered by elective caesarean section. At 38 weeks, the proportion was 1.7% compared to 5.1% and at 39 weeks, 1.1% compared to 2.1%.

The risks of serious respiratory problems showed the same pattern but with higher risk estimates than those for general respiratory problems.

Analyses after restriction to low risk pregnancies revealed slightly smaller risk estimates at 37 weeks gestation but essentially unchanged estimates at 38 and 39 weeks gestation for serious respiratory problems, whereas the estimates remained unchanged at all gestational ages for general respiratory problems.

Babies delivered by elective caesarean section at 37 to 39 weeks of gestation carry a two to fourfold increased risk of respiratory morbidity compared with babies delivered by intended vaginal delivery, say the authors.

They suggest that a significant reduction in neonatal respiratory morbidity may be obtained if elective caesarean section is postponed until 39 completed weeks of gestation.


Story Source:

The above story is based on materials provided by BMJ-British Medical Journal. Note: Materials may be edited for content and length.


Cite This Page:

BMJ-British Medical Journal. "Elective Caesareans Carry Increased Risk Of Breathing Problems." ScienceDaily. ScienceDaily, 14 December 2007. <www.sciencedaily.com/releases/2007/12/071212202023.htm>.
BMJ-British Medical Journal. (2007, December 14). Elective Caesareans Carry Increased Risk Of Breathing Problems. ScienceDaily. Retrieved December 18, 2014 from www.sciencedaily.com/releases/2007/12/071212202023.htm
BMJ-British Medical Journal. "Elective Caesareans Carry Increased Risk Of Breathing Problems." ScienceDaily. www.sciencedaily.com/releases/2007/12/071212202023.htm (accessed December 18, 2014).

Share This


More From ScienceDaily



More Health & Medicine News

Thursday, December 18, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Kids Die While Under Protective Services

Kids Die While Under Protective Services

AP (Dec. 18, 2014) As part of a six-month investigation of child maltreatment deaths, the AP found that hundreds of deaths from horrific abuse and neglect could have been prevented. AP's Haven Daley reports. (Dec. 18) Video provided by AP
Powered by NewsLook.com
UN: Up to One Million Facing Hunger in Ebola-Hit Countries

UN: Up to One Million Facing Hunger in Ebola-Hit Countries

AFP (Dec. 17, 2014) Border closures, quarantines and crop losses in West African nations battling the Ebola virus could lead to as many as one million people going hungry, UN food agencies said on Wednesday. Duration: 00:52 Video provided by AFP
Powered by NewsLook.com
When You Lose Weight, This Is Where The Fat Goes

When You Lose Weight, This Is Where The Fat Goes

Newsy (Dec. 17, 2014) Can fat disappear into thin air? New research finds that during weight loss, over 80 percent of a person's fat molecules escape through the lungs. Video provided by Newsy
Powered by NewsLook.com
Why Your Boss Should Let You Sleep In

Why Your Boss Should Let You Sleep In

Newsy (Dec. 17, 2014) According to research out of the University of Pennsylvania, waking up for work is the biggest factor that causes Americans to lose sleep. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins