The researchers believe that the body-wide inflammation caused by these infections triggers the buildup of plaque in arteries. For years, doctors have been using ultrasound to determine a whether a fetus in the womb could have Down syndrome. But now, researchers say ultrasound may not be as accurate as once believed. A new study questions the usefulness of ultrasound in detecting down syndrome in the womb. The study, reported in the Journal of the American Medical Association, says some markers on ultrasound scans that doctors thought were warning signs are almost always harmless.
Researchers say that's leading many women with normal fetuses to undergo unnecessary amniocentesis.
They only found one reliable marker - a shaded area suggesting a thickening at the back of the neck. Researchers at the State University of New York have found an unexpected imbalance between the parts of the brain controlling hearing and sight in people with tinnitus. This mix-up may help trigger the perception of ringing or buzzing. In past studies, doctors have discovered that mild sedatives can quiet the noise. Fifty-million people suffer from this disorder.