常見(jiàn)例句雙語(yǔ)例句The interval between S2 and the OS is related to the severity of mitral stenosis. The more severe the stenosis, the shorter the S2-OS interval.S2和開(kāi)瓣音間隔時(shí)間跟二尖瓣狹窄程度有關(guān)，狹窄越嚴(yán)重，S2-OS間期就越短。Objective:To observe whether percutaneous transluminal ballonmitral valvuloplasty (PTBMV) can improve the pulmonary function of patients with single mitral stenosis (MS).目的：觀察單純二尖瓣狹窄（MS）患者接受經(jīng)皮腔內(nèi)球囊二尖瓣成形術(shù)（PTBMV）治療前後的肺功能指標(biāo)的變化。d.wanfangdata.com.cnThe authors conclude that the method is safe, non invasive, accurate and repeatable, and it can really reflect the flow field uniformity of normal persons and patients with mitral stenosis.該方法具有安全無(wú)創(chuàng)、準(zhǔn)確可靠及可重複性強(qiáng)等優(yōu)點(diǎn)，能如實(shí)地反映正常人及二尖瓣狹窄患者二尖瓣下遊流場(chǎng)均勻性的優(yōu)劣狀況。 返回 mitral stenosis