Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Doppler ultrasound predicts risk of miscarriage

03.12.2003


Doppler ultrasound performed in early pregnancy can accurately identify embryonic congestive heart failure and subsequent risk of miscarriage, according to research being presented today at the 89th Scientific Assembly and Annual Meeting of the Radiological Society of North America (RSNA).



"The chances the pregnancy will continue are very high, about 95 percent, when Doppler ultrasound confirms normal embryonic heart function at six weeks," said the study’s author Jason C. Birnholz, M.D., president of Diagnostic Ultrasound Consultants in Oak Brook, Ill. "Over 99 percent of pregnancies with an abnormal Doppler pattern do not continue." The Doppler test measures the speed of red blood cells moving through vessels to determine pressure dynamics within the embryo’s heart.

Miscarriage is the most common complication of human gestation, occurring in approximately 20 percent of recognized pregnancies, according to the National Center for Health Statistics.


Dr. Birnholz performed endovaginal ultrasound imaging on 1,530 pregnant women to evaluate embryonic heart function early in the first trimester. With endovaginal ultrasound, a probe is inserted into the vagina.

Using high-resolution ultrasound imaging and highly sensitive Doppler, Dr. Birnholz was able, for the first time, to identify congestive heart failure in embryos. The condition is characterized by increased free amniotic fluid and evidence of depressed myocardial contractility (ability of the cardiac muscle to shorten itself). With the new Doppler technology, embryonic congestive heart failure is easily identified and, according to the study results, can be implicated in 40 percent of miscarriages.

"The cause of embryonic congestive heart failure – not enough oxygen reaching the heart – is much the same in embryos as it is in the elderly," Dr. Birnholz said. "I suspect that if the blood vessels that feed the placenta do not properly form or are slightly delayed in development, the heart does not get the support required."

The Doppler technology provides higher sensitivity and higher specificity than conventional ultrasound and may eventually allow for early intervention, according to Dr. Birnholz. He speculated that prospective treatment might be as simple as providing supplemental oxygen to an expectant mother during the critical time of development.

"Doppler evaluation provides prospective parents with early information about what they are facing," said Dr. Birnholz. Dr. Birnholz hopes that further research into embryonic congestive heart failure will enable new therapeutic possibilities to prevent miscarriage.


RSNA is an association of more than 35,000 radiologists, radiation oncologists and related scientists committed to promoting excellence in radiology through education and by fostering research, with the ultimate goal of improving patient care. The Society is based in Oak Brook, Ill.

Maureen Morley | EurekAlert!
Further information:
http://www.rsna.org/press03

More articles from Health and Medicine:

nachricht The genes are not to blame
20.07.2018 | Technische Universität München

nachricht Targeting headaches and tumors with nano-submarines
20.07.2018 | Universitätsmedizin der Johannes Gutenberg-Universität Mainz

All articles from Health and Medicine >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Future electronic components to be printed like newspapers

A new manufacturing technique uses a process similar to newspaper printing to form smoother and more flexible metals for making ultrafast electronic devices.

The low-cost process, developed by Purdue University researchers, combines tools already used in industry for manufacturing metals on a large scale, but uses...

Im Focus: First evidence on the source of extragalactic particles

For the first time ever, scientists have determined the cosmic origin of highest-energy neutrinos. A research group led by IceCube scientist Elisa Resconi, spokesperson of the Collaborative Research Center SFB1258 at the Technical University of Munich (TUM), provides an important piece of evidence that the particles detected by the IceCube neutrino telescope at the South Pole originate from a galaxy four billion light-years away from Earth.

To rule out other origins with certainty, the team led by neutrino physicist Elisa Resconi from the Technical University of Munich and multi-wavelength...

Im Focus: Magnetic vortices: Two independent magnetic skyrmion phases discovered in a single material

For the first time a team of researchers have discovered two different phases of magnetic skyrmions in a single material. Physicists of the Technical Universities of Munich and Dresden and the University of Cologne can now better study and understand the properties of these magnetic structures, which are important for both basic research and applications.

Whirlpools are an everyday experience in a bath tub: When the water is drained a circular vortex is formed. Typically, such whirls are rather stable. Similar...

Im Focus: Breaking the bond: To take part or not?

Physicists working with Roland Wester at the University of Innsbruck have investigated if and how chemical reactions can be influenced by targeted vibrational excitation of the reactants. They were able to demonstrate that excitation with a laser beam does not affect the efficiency of a chemical exchange reaction and that the excited molecular group acts only as a spectator in the reaction.

A frequently used reaction in organic chemistry is nucleophilic substitution. It plays, for example, an important role in in the synthesis of new chemical...

Im Focus: New 2D Spectroscopy Methods

Optical spectroscopy allows investigating the energy structure and dynamic properties of complex quantum systems. Researchers from the University of Würzburg present two new approaches of coherent two-dimensional spectroscopy.

"Put an excitation into the system and observe how it evolves." According to physicist Professor Tobias Brixner, this is the credo of optical spectroscopy....

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Leading experts in Diabetes, Metabolism and Biomedical Engineering discuss Precision Medicine

13.07.2018 | Event News

Conference on Laser Polishing – LaP: Fine Tuning for Surfaces

12.07.2018 | Event News

11th European Wood-based Panel Symposium 2018: Meeting point for the wood-based materials industry

03.07.2018 | Event News

 
Latest News

A smart safe rechargeable zinc ion battery based on sol-gel transition electrolytes

20.07.2018 | Power and Electrical Engineering

Reversing cause and effect is no trouble for quantum computers

20.07.2018 | Information Technology

Princeton-UPenn research team finds physics treasure hidden in a wallpaper pattern

20.07.2018 | Materials Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>