幻女**毛片,99热精品免费,日韩欧美亚洲精品,国产床上视频,国产成人精品一区二三区,99ri精品,国产区视频

　　這項研究表明，電子胎兒監護使用量減少了53％早期新生兒死亡率。
　　愛(ài)愛(ài)醫推薦原文閱讀：In a study to be presented today at the Society for Maternal-Fetal Medicine's (SMFM) annual meeting, The Pregnancy Meeting ?, in San Francisco, researchers will present findings that prove that the use of fetal（胎兒的） heart rate monitors lowers the rate of infant mortality. There have been a handful of small studies conducted in the past that looked at the effectiveness of fetal heart rate monitors, but none of them were large enough to be conclusive（決定性的） .
　　"There was some criticism within the obstetric（產(chǎn)科的） community that fetal heart rate monitoring was quickly accepted technology without proof that it was effective," said Suneet P. Chauhan, M.D., one of the study's authors. "We thought we could use data from the National Birth Cohort to get a large enough sample to gauge（測量，估計） its effectiveness."
　　Chauhan and his colleagues (Han-Yang Chen, Cande Ananth, Anthony Vintzileos and Alfred Abuhamad) used a sample of 1,945,789 singleton infant birth and death records from the 2004 National Birth Cohort. Multivariable（多變量的） log-binomial regression models were fitted to estimate risk ratio to evaluate the association between electronic fetal heart rate monitoring (EFM) and mortality, while adjusting for age, race, marital status, education, smoking, and the infant's gender.