Featured Research

from universities, journals, and other organizations

Device may help doctors diagnose lethal heart rhythm in womb

Date:
November 11, 2013
Source:
American Heart Association
Summary:
A device that records the natural magnetic activity of the heart helped researchers identify abnormal heart rhythms in unborn babies. It's the first sizable study to document the electrical aspects of long QT syndrome in the womb. The condition is a common cause of sudden death in early life and stillbirth.

Study co-author Janette Strasburger, M.D.performs an ultrasound scan prior to the magnetic EKG recording.
Credit: Yacouba Traore

A promising technology may enable doctors to diagnose and possibly treat in utero a common cause of stillbirth and sudden death in infants, according to research published in the American Heart Association journal Circulation.

The study is the first to document the electrophysiological characteristics of fetal long QT syndrome and to evaluate the diagnostic accuracy of the magnetic EKG, or magnetocardiogram, in a sizable population of at-risk fetuses.

"Until now, physicians were unable to diagnose a serious heart condition known as long QT syndrome until after birth," said Ronald T. Wakai, Ph.D., principal investigator of the study and a professor of medical physics at the University of Wisconsin School of Medicine and Public Health in Madison. "Our study shows that you can diagnose the condition in utero and identify which fetuses are most likely to have life-threatening arrhythmia. We also showed that once detected the arrhythmia can be effectively treated in utero."

Long QT syndrome is present in about one in every 2,000 births and accounts for about 10 percent of sudden infant deaths and unexplained stillbirths, Wakai said. It's also a leading cause of sudden death in children and young adults. Long QT predisposes the heart to develop a potentially lethal heart rhythm, but fetuses can be successfully treated if the rhythm is identified.

Using the magnetic EKG, the researchers diagnosed long QT in the womb with 89 percent accuracy.

The researchers evaluated 30 pregnancies in 1996-2012 in Wisconsin and at two locations in Japan. They chose patients based on a family history of long QT syndrome, unexplained death of a sibling in infancy or childhood, or a suspicious fetal heart rhythm. They then collected data positioning a probe on the mother's abdomen as early as midway through the pregnancy.

Long QT syndrome was diagnosed in 21 of the fetuses. Six of the fetuses had dangerous heart rhythms and one was delivered early after ominous rhythms were noted.

Magnetic EKGs will be put into practical use in the "not-too-distant future," but an accurate and complete family history remains the most critical aspect of diagnosing long QT syndrome, Wakai said.


Story Source:

The above story is based on materials provided by American Heart Association. Note: Materials may be edited for content and length.


Journal Reference:

  1. B. F. Cuneo, J. F. Strasburger, S. Yu, H. Horigome, T. Hosono, A. Kandori, R. T. Wakai. In Utero Diagnosis of Long QT Syndrome by Magnetocardiography. Circulation, 2013; 128 (20): 2183 DOI: 10.1161/CIRCULATIONAHA.113.004840

Cite This Page:

American Heart Association. "Device may help doctors diagnose lethal heart rhythm in womb." ScienceDaily. ScienceDaily, 11 November 2013. <www.sciencedaily.com/releases/2013/11/131111161432.htm>.
American Heart Association. (2013, November 11). Device may help doctors diagnose lethal heart rhythm in womb. ScienceDaily. Retrieved August 21, 2014 from www.sciencedaily.com/releases/2013/11/131111161432.htm
American Heart Association. "Device may help doctors diagnose lethal heart rhythm in womb." ScienceDaily. www.sciencedaily.com/releases/2013/11/131111161432.htm (accessed August 21, 2014).

Share This




More Health & Medicine News

Thursday, August 21, 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