Their organs are so similar to our own that pig heart valves are used to replace human aortic or mitral valves.
她们的器官和我们的是如此相似,以至于心脏瓣膜被用于人体主动脉瓣或二尖瓣替换手术。
2
Someday, they say, the new procedure may be an alternative for the kind of lower-risk patients who now have to have their chests opened to replace diseased aorticvalves.
他们说,有一天,对于现在必须开胸更换病变的脉瓣的低风险患者,这一新的过程可能是一种替换选择。
3
Mostly , the aortic and mistral valves are most often affected .