Navigation Links
C-Section Babies May Be More Likely to Fail First Hearing Test
Date:6/12/2012

By Kathleen Doheny
HealthDay Reporter

TUESDAY, June 12 (HealthDay News) -- Infants delivered by Cesarean section are three times more likely than babies delivered vaginally to fail their first hearing test, which is performed shortly after birth, new research from Israel finds.

However, the researchers noted that parents should be aware of this difference, but not alarmed, because this hearing "problem" is typically temporary.

Dr. Tatiana Smolkin, a neonatal researcher at Rambam Medical Center in Haifa, Israel, who worked on the study, said the loss generally disappears after 72 hours.

"Fluids are retained in the middle ear," which seems to affect neonatal hearing, she explained.

U.S. experts agreed that parents should take the information in stride.

"I think the take-home message is if you have had a C-section be prepared there is a higher chance your baby is going to fail one of these hearing tests, whether or not they have a hearing loss," said Dr. Richard Rosenfeld, chair of otolaryngology at SUNY Downstate, in Brooklyn, N.Y. He co-chaired the committee that crafted the American Academy of Pediatrics' guidelines on the management of the middle ear problem known as otitis media with effusion.

Dr. Dennis Woo, a pediatrician at the University of California, Los Angeles, Medical Center in Santa Monica, said the problem is often transient, and if the testing were done three or four days after birth, the results would likely be very different.

"There is nothing worrisome here as far as for the parents," Woo said.

To be sure, parents need to follow up with the baby's pediatrician, the doctors agreed.

For the study, the Israeli researchers evaluated 1,653 newborns. Of these, 1,170 were delivered vaginally; the other 483 by C-section.

They looked at the babies' results on their first hearing test, known as the otoacoustic emissions test.

Otoacoustic emissions are sounds given off by the inner ear when the inner ear structure known as the cochlea is stimulated by a sound. When the sound occurs, the outer hair cells of the ear vibrate. This produces an almost inaudible sound that throws an echo back into the middle ear.

The person conducting the test inserts a small probe into the ear canal to measure the sound; those with certain levels of hearing loss do not produce these very soft sounds.

The test can also detect the presence of middle ear fluid, which can temporarily affect hearing.

In the study, nearly 21 percent of the C-section babies failed the test, while only a little more than 7 percent of those delivered vaginally did. The test was done before the babies were 48 hours old.

The risk of failing the test, overall, was also higher in those babies who had it before they were a day old.

In the United States, about one-third of births are Cesarean.

The study, published online June 11, appears in the July print issue of the journal Pediatrics.

As the babies got repeat tests, most had normal results. The researchers had to refer 10 who did not -- five delivered vaginally, and five C-section babies -- for a different test that evaluates auditory brainstem functioning. All of these infants passed this test.

The researchers suggested that the first hearing test after C-section should preferably be delayed until the baby is beyond 48 hours old.

C-section babies may be "a little different," Woo agreed.

Something about the vaginal birth process may help dissipate the middle ear fluid, said Rosenfeld, who wrote the book "A Parent's Guide to Ear Tubes," about the procedure done when middle ear fluid persists.

Parents might consider asking their pediatrician to delay the test beyond the first two days after birth. "It makes sense," Woo said.

More information

To learn more about infants' hearing, visit the American Speech-Language-Hearing Association.

SOURCES: Richard Rosenfeld, M.D., M.P.H., professor and chair, otolaryngology, State University of New York Downstate, Brooklyn, N.Y.; author, "A Parent's Guide To Ear Tubes," and past president, American Society of Pediatric Otolaryngology; Dennis Woo, M.D., pediatrician, University of California, Los Angeles, Medical Center, Santa Monica; Tatiana Smolkin, M.D., neonatal researcher, Rambam Medical Center, Haifa, Israel; July 2012 Pediatrics


'/>"/>
Copyright©2012 ScoutNews,LLC.
All rights reserved  

Related medicine news :

1. Pesticides May Be Linked to Slightly Smaller Babies, Shorter Pregnancies
2. New pregnancy risk for babies and moms
3. More Unmarried Couples Having Babies: CDC
4. Babalung gets babies breathing again
5. Depressed Moms May Hinder Babies Sleep
6. Slow-growing babies more likely in normal-weight women; Less common in obese pregnancies
7. More Babies Today Have Irregular Head Shape: Expert
8. U.S. Sees Tripling of Babies Born Addicted to Painkillers
9. New report shows 15 million babies born too soon every year
10. Babies susceptibility to colds linked to immune response at birth
11. Overweight Moms More Apt to Have Large Babies, Study Says
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
C-Section Babies May Be More Likely to Fail First Hearing Test
(Date:6/27/2016)... ... , ... TherapySites, the leading website and online ... Counseling Association. This new relationship allows TherapySites to continue to extend their ... benefits and promotional offers. , "TCA is extremely excited about this new partnership, ...
(Date:6/26/2016)... ... 27, 2016 , ... Quality metrics are proliferating in cancer care, and are ... the eye of the beholder, according to experts who offered insights and commentary in ... Managed Care. For the full issue, click here . , For the American ...
(Date:6/26/2016)... (PRWEB) , ... June 26, 2016 , ... Brent Kasmer, a legally blind and certified ... be personalized through a fitness app. The fitness app plans to fix the two major ... only offer a one size fits all type program , They don’t eliminate ...
(Date:6/25/2016)... FL (PRWEB) , ... June 25, 2016 , ... The temporary closing of Bruton Memorial ... Plant City Observer , brings up a new, often overlooked aspect of head lice: the ... closing for fumigation is not a common occurrence, but a necessary one in the event ...
(Date:6/25/2016)... (PRWEB) , ... June 25, 2016 , ... ... athletes and non-athletes recover from injury. Recently, he has implemented orthobiologic procedures as ... City area —Johnson is one of the first doctors to perform the treatment. ...
Breaking Medicine News(10 mins):
(Date:6/24/2016)... -- According to a new market research ... Safety Pen Needles), Needle Length (4mm, 5mm, 6mm, 8mm, ... Purchase (Retail, Non-Retail) - Trends & Global Forecasts to ... for the forecast period of 2016 to 2021. This ... 2021 from USD 1.65 Billion in 2016, growing at ...
(Date:6/23/2016)... HOUSTON , June 23, 2016  MedSource ... platform as its e-clinical software solution of choice.  ... the best possible value to their clients by ... nowEDC.  The preferred relationship establishes nowEDC as the ... pricing for MedSource,s full-service clients.  "nowEDC has long ...
(Date:6/23/2016)... -- In a startling report released today, National Safety Council ... comprehensive, proven plan to eliminate prescription opioid overdoses. Prescription ... are tackling the worst drug crisis in recorded U.S. history, assigned ... Kentucky , New Mexico , ... 28 failing states, three – Michigan , ...
Breaking Medicine Technology: