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老年人心臟瓣膜病

引言

老年人心臟瓣膜病的診斷和治療受到了自20世紀(jì)后半期開(kāi)始期望壽命顯著延長(zhǎng)的影響。例如,在美國(guó),80歲及以上的人群數(shù)目預(yù)計(jì)從1990年的690萬(wàn)將增加到2050年的2500萬(wàn)左右[1]。因此,退行性心臟瓣膜病很可能成為一種日益增多的問(wèn)題。此外,瓣膜疾病的患病率隨衰老而增加,75歲及以上的人群中每8人中超過(guò)1人有中度或重度心臟瓣膜病[2]。

幸運(yùn)的是,隨著心臟手術(shù)的重大進(jìn)步,過(guò)去可能不適合手術(shù)的老年患者現(xiàn)在也可考慮手術(shù)治療。對(duì)于手術(shù)和圍手術(shù)期幸存的患者,功能水平和生活質(zhì)量以及(在某些研究中)生存率與年齡匹配的一般人群受試者相似[3-5]。因此,只能對(duì)一般狀況極佳的老年患者考慮手術(shù)這一經(jīng)典觀念受到了挑戰(zhàn),因?yàn)樵诠泊婕膊〔粐?yán)重或若不受控制也不會(huì)有嚴(yán)重影響的患者中取得了較高的手術(shù)成功率[6]。而且,經(jīng)皮瓣膜介入技術(shù)的出現(xiàn)將進(jìn)一步增加老年患者的治療選擇。事實(shí)上,經(jīng)導(dǎo)管主動(dòng)脈瓣置換術(shù)(transcatheter aortic valve replacement, TAVR)的成功促進(jìn)了二尖瓣及三尖瓣疾病處理的積極發(fā)展[7,8]。 (參見(jiàn)“癥狀性重度主動(dòng)脈瓣狹窄的治療選擇”)

研究使用了不同的年齡標(biāo)準(zhǔn)來(lái)界定老年人。雖然目前尚無(wú)關(guān)于心臟瓣膜病患病率的綜合人群數(shù)據(jù),但有幾項(xiàng)研究提供了顯著心臟瓣膜病(根據(jù)年齡分層)患病率的重要信息(表 1)。老年人最常見(jiàn)的心臟瓣膜病有主動(dòng)脈瓣狹窄(aortic stenosis, AS)、器質(zhì)性和缺血性(功能性)二尖瓣反流以及三尖瓣反流。

主動(dòng)脈瓣狹窄

鈣化性或退行性主動(dòng)脈瓣疾病被認(rèn)為是老年患者中最常見(jiàn)的瓣膜病變[9-11]。在赫爾辛基老化研究中,501例隨機(jī)選擇的75-86歲男性和女性進(jìn)行了放射影像學(xué)檢查和多普勒超聲心動(dòng)圖檢查[10,11]。至少為中度AS[定義為主動(dòng)脈瓣口面積(aortic valve area, AVA)≤1.2cm2且跨瓣速度比≤0.35]的患病率為5%;重度AS(AVA≤0.8cm2且跨瓣速度比≤0.25)的患病率隨年齡增加而增加,從75-76歲人群的1%-2%增至86歲人群的近6%[11]。女性中更常發(fā)生中度或重度AS(8.8% vs 男性中的3.6%)[10]。 (參見(jiàn)“主動(dòng)脈瓣狹窄的瓣口面積”)

在轉(zhuǎn)診中心及療養(yǎng)院人群中也報(bào)道了類似的患病率,在90歲以上人群中患病率甚至更高[12,13]。

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文獻(xiàn)評(píng)審有效期至: 2019-01 . | 專題最后更新日期: 2016-12-22.
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