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  3. The use of nitrous oxide, or laughing gas during childbirth fell out of favor in the United States decades ago, and just two hos

The use of nitrous oxide, or laughing gas during childbirth fell out of favor in the United States decades ago, and just two hos

admin2014-01-07  47
问题     The use of nitrous oxide, or laughing gas during childbirth fell out of favor in the United States decades ago, and just two hospitals—one in San Francisco and one in Seattle—still offer it. But interest in returning the dentist office staple to the delivery room is growing: respected hospitals including Dartmouth-Hitchcock Medical Center plan to start offering it, the federal government is reviewing it, and after a long break, the equipment needed to administer it is expected to hit the market soon.
    Lori Rowell, due to give birth to her second child in June, is interested in the option.
    "I would definitely think about it, and read about and talk to my doctor about it," said Rowell, 36, of Concord. "It is nice to know that it doesn’t affect the baby."
    Though laughing gas is commonly used for labor pain relief in Canada, Great Britain and other countries, it’s been all but abandoned in the United States in favor of other options, said Judith Bishop, a certified nurse midwife at the University of California San Francisco Medical Center and leader in the effort to reintroduce laughing gas for labor.
    "In this country, most people when they hear about laughing gas, they think it sounds pretty retro(重新流行的), that it sounds very old-fashioned and they’re sure there’s something bad or dangerous about it and we must’ve chosen to eliminate it. But I think we eliminated it because we went for the more specialized, higher-tech options," said Bishop, who will be among the speakers Monday at a conference for New Hampshire, Vermont and Maine hospital officials.
    She and other advocates of reintroducing laughing gas emphasize that it is no silver bullet—it "takes the edge off" pain rather than eliminates it. But they say it should be among the options offered to women, particularly those who give birth at small or rural hospitals that lack round-the-clock anesthesiologists(麻醉师). Laughing gas is easy for women to self-administer, takes effect quickly, and can be used late in labor.
    "It’s not right for everybody, but it’s something that for many women will offer a certain amount of relief," Bishop said.
As it is suggested in the passage, laughing gas can NOT be used properly
选项 A、without a professional anesthesiologist.
B、without the administering equipment.
C、by women in difficult labor.
D、by women giving birth at home.
答案B
解析 第1段最后一句中的the equipment needed to administer it表明笑气的使用必须要依靠专用的仪器，由此可知，没有这种仪器，笑气就不能使用，故应选B。第6段第2句暗示没有全天候的麻醉师的医院很适合使用笑气，因此A不符合题意；该段最后一句中的self-administer表明笑气设备可以由产妇自己控制，故C、D均不符合题意。
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