宜宾双眼皮切开修复(宜宾拉双眼皮哪里整形较好) (今日更新中)

Republican Sen. Susan Collins almost dropped her handbag Thursday as she gestured disbelief at word, delivered to her by reporters in the Capitol, that President Donald Trump would 193

Scans of the lungs of the sickest COVID-19 patients show distinctive patterns of infection, but so far those clues offer little help in predicting which patients will pull through. For now, doctors are relying on what’s called supportive care that’s standard for severe pneumonia.Doctors in areas still bracing for an onslaught of sick patients are scouring medical reports and hosting webinars with Chinese doctors to get the best advice on what works and what hasn’t.One thing that’s clear around the globe: Age makes a huge difference in survival. And one reason is that seniors’ lungs don’t have as much of what geriatrics expert Dr. Richard Baron calls reserve capacity.“At age 18, you have a lot of extra lung capacity you don’t use unless you’re running a marathon,” explained Baron, who heads the American Board of Internal Medicine. That capacity gradually declines with age even in otherwise healthy people, so “if you’re an old person, even a mild form can overwhelm your lungs if you don’t have enough reserve.”Here’s what scientists can say so far about treating those who become severely ill.HOW DOES COVID-19 HARM THE LUNGS?The new coronavirus, like most respiratory viruses, is spread by droplets from someone’s cough or sneeze. The vast majority of patients recover, most after experiencing mild or moderate symptoms such as fever and cough. But sometimes the virus makes its way deep into the lungs to cause pneumonia.Lungs contain grapelike clusters of tiny air sacs called alveoli. When you breathe, oxygen fills the sacs and passes straight into blood vessels that nestle alongside them. Pneumonia occurs when an infection -- of any sort, not just this new virus -- inflames the lungs’ sacs. In severe cases they fill with fluid, dead cells and other debris so oxygen can’t get through.If other countries have the same experience as China, about 5% of COVID-19 patients could become sick enough to require intensive careHOW DOES THAT DAMAGE APPEAR?Doctors at New York’s Mount Sinai Health System analyzed 121 chest CT scans shared by colleagues in China and spotted something unusual.Healthy lungs look mostly black on medical scans because they’re full of air. An early infection with bacterial pneumonia tends to show up as a white blotch in one section of one lung. Pneumonia caused by a virus can show up as hazy patches that go by a weird name -- “ground glass opacities.”In people who get COVID-19 pneumonia, that haze tends to cluster on the outside edge of both lungs, by the ribs, a distinctive pattern, said Dr. Adam Bernheim, a radiologist at Mount Sinai.As infection worsens, the haze forms rounder clusters and gradually turns more white as the air sacs become increasingly clogged.HOW TO TREAT THE PNEUMONIA?There are no drugs so far that directly attack the new coronavirus, although doctors are trying some experimentally, including an old malaria treatment and one under development to treat Ebola.“The best treatment we have is supportive care,” said Dr. Aimee Moulin, an emergency care physician at the University of California Davis Medical Center.That centers around assistance in breathing when the oxygen levels in patients’ blood starts to drop. For some people, oxygen delivered through a mask or tubes in the nose is enough. More severely ill patients will need a breathing machine.“The goal is to keep the person alive until the disease takes its course” and the lungs begin to heal, explained Mount Sinai’s Dr. Neil Schachter.The very worst cases develop an inflammatory condition called ARDS -- acute respiratory distress syndrome — that floods the lungs with fluid. That’s when the immune system’s attempt to fight infection “is going crazy and itself attacking the lung,” Baron explained.Many things besides the coronavirus can cause the condition, and regardless of the cause, it comes with a high risk of death.WHAT ELSE IS IMPACTED?Severe pneumonia of any sort can cause shock and other organ damage. But in a webinar last week, Chinese doctors told members of the American College of Cardiology to watch for some additional problems in severe COVID-19, especially in people with heart disease. The worst off may need blood thinners as their blood starts to abnormally clot, and the heart itself may sustain damage not just from lack of oxygen but from the inflammation engulfing the body.Another caution: The sickest patients can deteriorate rapidly, something a hospital in Kirkland, Washington, witnessed.Of 21 patients who needed critical care at Evergreen Hospital, 17 were moved into the ICU without 24 hours of hospital admission, doctors reported last week in the 4639

Residents were urged to shelter in place for several hours after an explosion and fire broke out Wednesday at a massive ExxonMobil plant in Texas, injuring 66 people, officials said.The injuries were non-life threatening, plant manager Jason Duncan told reporters. Most involved minor, first-degree-type burns, with the victims treated at a local clinic, he said. Most were ExxonMobil employees or contractors.City officials said via Twitter Wednesday afternoon that the shelter-in-place advisory had been lifted after monitoring failed to detect "any levels of concern" in the air. The fire had been contained by the evening."We realize the people who live here in Baytown and our surrounding communities are worried," Baytown spokeswoman Natasha Barrett told reporters. "We understand that and we've been working hour after hour to check on things, to monitor air quality."The fire occurred at the company's Baytown Olefins Plant, ExxonMobil spokeswoman Sarah Nordin said. The company website describes the complex as one of the largest refining and petrochemical complexes in the world. It's located about 25 miles east of Houston.Barrett said the fire began about 11:07 a.m. local time and the precautionary shelter-in-place was issued about 10 minutes later.The blaze is in a unit that contains polypropylene material and Exxon asked that the shelter-in-place order be issued west of the plant and south of the Texas Spur 330 freeway "out of an abundance of caution," the city of Baytown said via Twitter.Duncan said the fire broke out at a polypropylene recovery unit, where the plastic is purified for production. He said crews were working to shut down the units to isolate the fire source.Duncan said the company is conducting air quality monitoring at the site and fence line, and cooperating with regulatory agencies. He said no adverse environmental effects had been detected.Barrett said city and county officials were also monitoring the air.The cause of the explosion is unknown, he said. 2015

Sen. Ted Cruz, R-Texas, announced on Sunday that he is self-quarantining himself after learning that he had interacted with someone who tested positive with COVID-19 at last week's CPAC Conference. The conference was attended by top Republican officials, including President Donald Trump and Vice President Mike Pence. Cruz confirmed in a statement on Sunday that he briefly interacted with the patient, and that he shook hands with the person. Health experts said that the public should avoid direct contact with those carrying the virus, no matter if they're showing symptoms. Cruz said in a statement that he has not come down with any COVID-19 symptoms, and has been in contract with a number of officials, including Pence and newly-announced White House Chief of Staff Mark Meadows. He added that he is self-quarantining as a precaution as his brief interaction does not meet the federal standard for self-quarantine.Cruz issued the following statement on Sunday:"Last night, I was informed that 10 days ago at CPAC I briefly interacted with an individual who is currently symptomatic and has tested positive for COVID-19. That interaction consisted of a brief conversation and a handshake."I have consulted with medical authorities from the Houston Health Department, the Harris County Public Health Department, the Centers for Disease Control and Prevention, and the Department of Health and Human Services, as well as my personal physician. I have also spoken with Vice President Pence, Leader McConnell, and Mark Meadows."I'm not experiencing any symptoms, and I feel fine and healthy. Given that the interaction was 10 days ago, that the average incubation period is 5-6 days, that the interaction was for less than a minute, and that I have no current symptoms, the medical authorities have advised me that the odds of transmission from the other individual to me were extremely low."The physicians further advised that testing is not effective before symptoms manifest, and my brief interaction with the individual does not meet the CDC criteria for self-quarantine."The medical authorities explicitly advised me that, given the above criteria, the people who have interacted with me in the 10 days since CPAC should not be concerned about potential transmission."Nevertheless, out of an abundance of caution, and because of how frequently I interact with my constituents as a part of my job and to give everyone peace of mind, I have decided to remain at my home in Texas this week, until a full 14 days have passed since the CPAC interaction."Everyone should continue to treat this outbreak seriously and be driven by facts and medical science. We need to continue to be proactive in mobilizing resources to combat this outbreak-including the .3 billion in emergency funding we provided last week-and I encourage everyone to follow the recommendations of the CDC and other health professionals in protecting their own health and welfare, as well as the health and welfare of those around them." 3022

Special counsel Robert Mueller made a last-minute request to have his deputy sworn in for Wednesday's House Judiciary Committee hearing in case he needed to answer any questions the special counsel could not fully answer himself, according to a source familiar with the matter.Republicans on the House Judiciary committee immediately raised concerns that Democrats may allow Mueller's deputy Aaron Zebley to testify alongside the special counsel at the hearing, one of two public hearings Mueller is testifying at Wednesday.Democrats so far have not agreed to this request. A spokesman for House Judiciary Chairman Jerry Nadler said the only witness for the hearing, at the moment, is Mueller.Democrats have pushed to hear from 740

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