Mitral valve prolapse less common, less harmful than previously thought
...alled for to resolve this issuedefinitively and to define the natural history of this condition," he said. Diagnoses of mitral-valve prolapse increased significantly in the late1970s and early 1980s with the advent of ultrasound technology which, for thefirst time, enabled doctors to view the mitral...Controversy Over The Effects Of Passive Smoking
... "It is therefore extremelyimportant to be able to define correctly the levels of risk involved."......andwho they serve reflect cultural change and help define it. After sketching theirorigins in Byzantium, Risse portrays hospitals in the Middle Ages as houses ofrefuge and dying, where moral and spiritual concerns prevailed and wherecaregivers were expected to fast and do penance. The house of mercy gave wa...The Whole Truth From Five-Year-Olds
... between the concepts, and 61%failed to adequately define either telling thetruth or telling a lie. "This means conventional approaches to evaluatingchildren as witnesses in abuse and neglect casesmay be needlessly disqualifying up to 70% ofchildren," Lyon says. In fact, very few children younger than 7 (8%...Stent Procedures May Be Unnecessary In Some Heart Cases
...logists from around the world about how they would define stent-likeresults, based on visual and radiographic data. As expected, there was a widevariety of opinions, with 45 percent of cardiologists saying that for them, a 10percent residual narrowing represented stent-like results. "Only 1 percent of the ...Reassuring Findings About Infants Exposed To Zidovudine
...of these and other children inPACTG 219 will help define the long-term safety of AZT use during the perinatalperiod. Pediatric HIV specialists also hope to establish a registry to trackthe health of all children exposed to antiretrovirals, a proposal that is beingactively discussed within the medical comm...Scientists Discover How Aspirin Reduces Inflammation
... In this paper Gaynor and colleagues clearly define a molecular stepwhere aspirin and salicylate act to block the inflammatory cascade -- theyinhibit one of the proteins involved in the destruction of IkB. The result isthat NF-kB remains sequestered outside the cell's nucleus thereby preventing theNF-...National Office Of Drug Safety Is Needed, Experts Say In JAMA
...ndate to undertake all four of the major tasksthat define a basic drug safety monitoring program," the three conclude. "Thefunds to pay for this expanded safety program should come from user feescollected from pharmaceutical companies." They contend that just one penny per prescription would yieldap...Keeping Score On Doctors: Report Says Flaws In Counting Must Be Addressed To Ensure Accuracy
... as a death at the second, and the methods used to define diseaseseverity didn't include preexisting conditions that could have influenced howwell patients did. "Report cards are widely used by government, insurance companies, HMOs,and employers," Jollis said. "However, the quality of data is not ye......rely on the intervention of a human to extract and define a setof features for it. This new system is capable of efficiently searchinga database of raw information to match patterns and detect objects. "Instead of trying to extract a restricted set of features and trainthe classifier to look just for those...Routine Dental X-ray May Be A Valuable Tool In Stroke Prevention
...ification confirms there is a problem, but doesn't define the extent of the problem. "The calcification may be confined to the arterial walls and may not be blocking the vessel," she said. "But when we find it, patients should be referred to their physician immediately for a full work-up." Individual......s to soon isolate a distinct set of parametersthat define intoxicated speech with a least 90 percent accuracy.Regardless, she and her colleagues hope their research adds to the basicknowledge and understanding of how speech is produced....