valve disease

劍橋詞典

a condition in which one of the heart valves (= flaps that control the flow of blood ) does not open or close properly , causing extra strain on the heart
心髒瓣膜病
Heart valve disease may be due to heart abnormalities at birth , infection , or degeneration with age . 心髒瓣膜病可能是因爲(wèi)出生時(shí)即有的異常、感染或是因衰老導(dǎo)致的功能減退造成。 返回 valve disease