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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

When traveling by air, airline safety standards require us to be prepared for the unlikely event of an emergency landing. But we don’t always know how to prepare for the unlikely event of an overbooked flight.Here are a few tips to help you deal with being bumped at the boarding gate — including how some protections from a 337

WASHINGTON, D.C. – Amid the bright orchids of the U.S. Botanic Garden sits a 200-year history of protecting America’s most fragile plants.“We're a living repository for rare and endangered plants,” said Saharah Moon Chapotin, director of the garden.The U.S. Botanic Garden is the oldest one in the country, an idea envisioned by George Washington and Thomas Jefferson. It’s about to celebrate its 200th year. About 60,000 plants, lying within several acres in the heart of Washington, D.C.Conservation at the garden is always in season.“Many of our plants are rare and endangered and we are providing a home for them,” Chapotin said.Here in the U.S. there are 1,300 species that are considered threatened or endangered. Nearly 20 percent of those are plants adding up to hundreds of flora on the brink.Some already fell off the cliff, like Hawaii’s “Cabbage on a Stick.” Because of overdevelopment, the insect that pollinated it disappeared and in 2014, the plant went extinct in the wild, too.There are others endangered, too, like a cactus from Arizona and bushes which are native to Florida. Endangered plants don’t always get the kind of attention endangered animals do.“Often people do think about animals they have faces and they're sort of cute,” USBG deputy director Susan Pell. “So, we kind of think people generally can sort of sympathize with them a little bit more, than maybe with a plant that they're not familiar with.”At the garden, they emphasize how much plants are tied to the habitat of endangered animals, at risk from invasive species, development and climate change.“They're really interconnected and so I think plants are a fundamental part of conserving environment and conserving habitats,” Chapotin said. “And if you just focus on conserving the animals you're leaving out a huge part of the equation in terms of the plants.”That all adds up to a continuing mission of saving plants there in the hopes of one day taking those that are now extinct outside the walls and reintroducing them back to Mother Nature. 2049

Winter is coming to the East Coast for the next week.The next five to seven days are going to bring unseasonably cold temperatures to the eastern two-thirds of the US, CNN meteorologist Derek Van Dam said.The cold front could bring below freezing temperatures to some places.The cold was already descending on New York early Friday morning, with wind chill expected to bring temperatures down to the upper teens to mid-20s, according to the National Weather Service. Wind gusts in Boston are reaching 25 to 35 mph and will bring temperatures to the 20s as well, the NWS said.Snow flurries are also expected for the downwind parts of the Great Lakes Friday, Van Dam said, adding that those flurries will be at the Northern Great Lakes Saturday."The Great Lakes are no longer ice covered, so here comes the Lake Effect snow again," the National Weather Service said. 876

Two children who went missing on Sunday, six-year-old Braxton Williams and 5-year-old Bri'ya Williams, have been found safe, according to 150