请懂医学术语的网友给我科普一下，见内：

来源: 于 2021-01-22 14:17:25 [旧帖] [给我悄悄话] 本文已被阅读：次

请教懂医学术语的网友：

请问下面两句话是什么意思？ 大致的意思？ 谢谢了！ 我只阅读了该研究的结论部分， 关于老年病人接受心脏瓣膜手术的研究。 文章发表于2017 年。

  1. “New York Heart Association class was significantly improved (P<0.001).”
  2. “After the procedure, TR was reduced by at least 1 grade in 91% of the patients, thereof 4% that were reduced from massive to severe.”

文章的来源和链接如下： 先谢谢啦！

https://www.ahajournals.org/doi/10.1161/CIRCULATIONAHA.116.024848?url_ver=Z39.88-2003&rfr_id=ori%3Arid%3Acrossref.org&rfr_dat=cr_pub++0pubmed&

 

苏梅敬上