Featured Research

from universities, journals, and other organizations

Infant Hearing Test Results May Predict Sudden Infant Death Syndrome

Date:
July 26, 2007
Source:
Children's Hospital and Regional Medical Center of Seattle
Summary:
One of the greatest medical mysteries of our time has taken a leap forward in medical understanding with new research. A new study found that all babies who died of SIDS universally shared the same distinctive difference in their newborn hearing test results for the right inner ear, when compared to infants who did not have SIDS.

One of the greatest medical mysteries of our time has taken a leap forward in medical understanding with new study results announced by Dr. Daniel D. Rubens of Children's Hospital and Regional Medical Center in Seattle. Rubens' study published in July, 2007 in Early Human Development found all babies in a Rhode Island study group who died of Sudden Infant Death Syndrome (SIDS) universally shared the same distinctive difference in their newborn hearing test results for the right inner ear, when compared to infants who did not have SIDS.

This is the first time doctors might be able to identify newborns at risk for SIDS by a simple, affordable and routine hearing test administered shortly after birth. In the study, medical records and hearing tests of 31 babies who died from SIDS in Rhode Island were examined and compared to healthy babies. Rhode Island has a particularly robust database of newborn hearing test data.

The cause of SIDS, known around the world as "crib death" and "cot death," has eluded physicians and grieving parents for centuries. Responsible for many previously unexplainable deaths of infants usually two to four months old and striking boys more than girls, SIDS causes tragic, sudden death in approximately 1 in 1,000 newborns world-wide, making it the largest cause of death in young infants.

In the United States approximately 3,600 deaths each year were attributed to SIDS from 1992-1999, according to an April, 2004 article in Archives of Pediatric and Adolescent Medicine. Death occurs during sleep, seemingly with no warning and no previous symptoms. Changes in infant care have been promoted including the "Back to Sleep" program discouraging sleeping on the stomach, and avoiding exposure to cigarette smoke. Various causes have been suggested, including disturbances in respiratory control and infant overheating, but to date nothing has proven conclusive.

It is known that the inner ear contains tiny hairs that are involved in both hearing and vestibular function. Rubens proposes that vestibular hair cells are important in transmitting information to the brain regarding carbon dioxide levels in the blood. He postulates that injury to these cells will disrupt respiratory control, playing a critical role in predisposing infants to SIDS.

The SIDS infants in Rubens' study showed a consistent four point lower score in their standard newborn hearing tests, across three different sound frequencies in the right ear, when compared to babies that didn't die from SIDS. Additionally, healthy infants typically test stronger in the right ear than the left. However, in each of the SIDS cases studied, the right ear tested lower than the left, reversing the test results of healthy babies.

"This discovery opens a whole new line of inquiry into SIDS research," said Rubens. "For the first time, it's now possible that with a simple, standard hearing test babies could be identified as at risk for SIDS, allowing preventative measures to be implemented in advance of a tragic event." He urges further research, adding "We must now fully explore all aspects of inner ear function and SIDS, and analyze testing frequencies higher than those currently tested by newborn hearing screen centers."

Previous groundbreaking SIDS research at Seattle Children's Hospital and Regional Medical Center took place during the 1970's, when Dr. Bruce Beckwith was one of the first researchers to describe features of SIDS that can identify cases during autopsy, distinguishing SIDS deaths from other causes of infant death. Beckwith is highly recognized in the body of SIDS research, making his work among the most significant earlier published findings about the condition. "It has been my great privilege to follow in Dr. Beckwith's footsteps with this new discovery that creates the possibility of identifying SIDS infants before tragedy strikes," said Rubens. "Each new breakthrough brings us closer to making SIDS a condition of the past."


Story Source:

The above story is based on materials provided by Children's Hospital and Regional Medical Center of Seattle. Note: Materials may be edited for content and length.


Cite This Page:

Children's Hospital and Regional Medical Center of Seattle. "Infant Hearing Test Results May Predict Sudden Infant Death Syndrome." ScienceDaily. ScienceDaily, 26 July 2007. <www.sciencedaily.com/releases/2007/07/070726153257.htm>.
Children's Hospital and Regional Medical Center of Seattle. (2007, July 26). Infant Hearing Test Results May Predict Sudden Infant Death Syndrome. ScienceDaily. Retrieved August 20, 2014 from www.sciencedaily.com/releases/2007/07/070726153257.htm
Children's Hospital and Regional Medical Center of Seattle. "Infant Hearing Test Results May Predict Sudden Infant Death Syndrome." ScienceDaily. www.sciencedaily.com/releases/2007/07/070726153257.htm (accessed August 20, 2014).

Share This




More Health & Medicine News

Wednesday, August 20, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Possible Ebola Patient in Isolation at California Hospital

Possible Ebola Patient in Isolation at California Hospital

Reuters - US Online Video (Aug. 20, 2014) A patient who may have been exposed to the Ebola virus is in isolation at the Kaiser Permanente South Sacramento Medical Center. Linda So reports. Video provided by Reuters
Powered by NewsLook.com
Raw: World's Oldest Man Lives in Japan

Raw: World's Oldest Man Lives in Japan

AP (Aug. 20, 2014) A 111-year-old Japanese was certified as the world's oldest man by Guinness World Records on Wednesday. Sakari Momoi, a native of Fukushima in northern Japan, was given a certificate at a hospital in Tokyo. (Aug. 20) Video provided by AP
Powered by NewsLook.com
Do More Wedding Guests Make A Happier Marriage?

Do More Wedding Guests Make A Happier Marriage?

Newsy (Aug. 20, 2014) A new study found couples who had at least 150 guests at their weddings were more likely to report being happy in their marriages. Video provided by Newsy
Powered by NewsLook.com
Ebola-Hit Sierra Leone's Freetown a City on Edge

Ebola-Hit Sierra Leone's Freetown a City on Edge

AFP (Aug. 19, 2014) Residents of Sierra Leone's capital voice their fears as the Ebola virus sweeps through west Africa. Duration: 00:56 Video provided by AFP
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:
from the past week

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