濮阳东方医院看阳痿价格偏低(濮阳东方看男科病评价非常好) (今日更新中)

WASHINGTON — President Donald Trump says he will postpone a meeting of Group of 7 nations until fall. He's also calling for an expansion of the group’s membership because he considers the current members an outdated group that doesn’t properly represent what’s taking place in the world. The summit was scheduled to take place between June 10 and June 12 at the president's Camp David retreat in Maryland.The G7 members are Canada, France, Germany, Italy, Japan, the United Kingdom and the United States. Trump is singling out Russia, Australia, South Korea and India as possible additions. The leaders of the world’s major economies had been slated to meet in the U.S. this year, but that gathering has been hobbled by the coronavirus outbreak. 757

US oil surged above a barrel on Wednesday amid worries that Tropical Storm Barry could derail crude production in the Gulf of Mexico.US oil futures for August delivery settled 4.5% higher at .43, 215

US Attorneys claim a Pennsylvania man used a drone to drop homemade explosives on the property of his ex-girlfriend. According to 142

Two centuries after its invention, the stethoscope — the very symbol of the medical profession — is facing an uncertain prognosis.It is threatened by hand-held devices that are also pressed against the chest but rely on ultrasound technology, artificial intelligence and smartphone apps instead of doctors’ ears to help detect leaks, murmurs, abnormal rhythms and other problems in the heart, lungs and elsewhere. Some of these instruments can yield images of the beating heart or create electrocardiogram graphs.Dr. Eric Topol, a world-renowned cardiologist, considers the stethoscope obsolete, nothing more than a pair of “rubber tubes.”It “was OK for 200 years,” Topol said. But “we need to go beyond that. We can do better.”In a longstanding tradition, nearly every U.S. medical school presents incoming students with a white coat and stethoscope to launch their careers. It’s more than symbolic — stethoscope skills are still taught, and proficiency is required for doctors to get their licenses.Over the last decade, though, the tech industry has downsized ultrasound scanners into devices resembling TV remotes. It has also created digital stethoscopes that can be paired with smartphones to create moving pictures and readouts.Proponents say these devices are nearly as easy to use as stethoscopes and allow doctors to watch the body in motion and actually see things such as leaky valves. “There’s no reason you would listen to sounds when you can see everything,” Topol said.At many medical schools, it’s the newer devices that really get students’ hearts pumping.“Wow!” ″Whoa!” ″This is awesome,” Indiana University medical students exclaimed in a recent class as they learned how to use a hand-held ultrasound device on a classmate, watching images of his lub-dubbing heart on a tablet screen.The Butterfly iQ device, made by based by Guilford, Connecticut-based Butterfly Network Inc., went on the market last year. An update will include artificial intelligence to help users position the probe and interpret the images.Students at the Indianapolis-based medical school, one of the nation’s largest, learn stethoscope skills but also get training in hand-held ultrasound in a program launched there last year by Dr. Paul Wallach, an executive associate dean. He created a similar program five years ago at the Medical College of Georgia and predicts that within the next decade, hand-held ultrasound devices will become part of the routine physical exam, just like the reflex hammer.The devices advance “our ability to take peek under the skin into the body,” he said. But Wallach added that, unlike some of his colleagues, he isn’t ready to declare the stethoscope dead. He envisions the next generation of physicians wearing “a stethoscope around the neck and an ultrasound in the pocket.”Modern-day stethoscopes bear little resemblance to the first stethoscope, invented in the early 1800s by Frenchman Rene Laennec, but they work essentially the same way.Laennec’s creation was a hollow tube of wood, almost a foot long, that made it easier to hear heart and lung sounds than pressing an ear against the chest. Rubber tubes, earpieces and the often cold metal attachment that is placed against the chest came later, helping to amplify the sounds.When the stethoscope is pressed against the body, sound waves make the diaphragm — the flat metal disc part of the device — and the bell-shaped underside vibrate. That channels the sound waves up through the tubes to the ears. Conventional stethoscopes typically cost under 0, compared with at least a few thousand dollars for some of the high-tech devices.But picking up and interpreting body sounds is subjective and requires a sensitive ear — and a trained one.With medical advances and competing devices over the past few decades, “the old stethoscope is kind of falling on hard times in terms of rigorous training,” said Dr. James Thomas, a cardiologist at Northwestern Medicine in Chicago. “Some recent studies have shown that graduates in internal medicine and emergency medicine may miss as many of half of murmurs using a stethoscope.”Northwestern is involved in testing new technology created by Eko, a Berkeley, California-based maker of smart stethoscopes. To improve detection of heart murmurs, Eko is developing artificial intelligence algorithms for its devices, using recordings of thousands of heartbeats. The devices produce a screen message telling the doctor whether the heart sounds are normal or if murmurs are present.Dennis Callinan, a retired Chicago city employee with heart disease, is among the study participants. At age 70, he has had plenty of stethoscope exams but said he feels no nostalgia for the devices.“If they can get a better reading using the new technology, great,” Callinan said.Chicago pediatrician Dr. Dave Drelicharz has been in practice for just over a decade and knows the allure of newer devices. But until the price comes down, the old stalwart “is still your best tool,” Drelicharz said. Once you learn to use the stethoscope, he said, it “becomes second nature.”“During my work hours in my office, if I don’t have it around my shoulders,” he said, “it’s as though I was feeling almost naked.” 5223

US President Donald Trump rallied his supporters in New Mexico on Monday and talked up his chances of turning the state red as part of his efforts to expand his grip on the Electoral College in next year's presidential election."It's been a while since a Republican won New Mexico," Trump told supporters, who greeted him with chants of "USA, USA."''I think we're going to do great here. We're here because we really think we're going to turn this state and make it a Republican state."New Mexico has not voted for a Republican in the presidential election since 2004.Trump captured just 40% of the state vote in 2016, as compared to the 48% that went for Hillary Clinton.She did not visit the state during the 2016 campaign.He also spoke about the US/Mexico border, thanking Mexican President Andrés Manuel López Obrador for "doing a great job for us on the border", which was met by chants of "build that wall" from his supporters.Trump reassured his supporters that the wall was being built, adding that it was difficult to do with the Democrats in control of the House."We'll have almost 500 miles of wall built by the end of next year, and it's making a big difference" he added.Trump also spoke about Supreme Court Justice Brett Kavanaugh, who is facing a new sexual misconduct allegation, accusing the Democrats of using "phony congressional committees," to "demean" and to "libel.""Look at what they're doing today to Justice Kavanaugh," he said, adding,"he's a great man by the way."Trump's rally in Rio Rancho, in suburban Albuquerque, is the first stop on a three-day swing that will also take him to California for fundraisers expected to raise more than million.Trump is looking to find the next Wisconsin or Michigan - states that Democrats generally win in presidential elections but that can surprise under certain conditions, as they did in 2016. 1879

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