例句 Transcatheter Aortic Valves — Where Do We Go from Here?
Aortic 英 /eɪ'ɔːtɪk/ 美 /e'ɔrtɪk/
释义 adj. 大动脉的
例句 Is there a risk in avoiding risk for younger patients with aortic valve disease?
Valve 英 /vælv/ 美 /vælv/
释义 n. 阀；[解剖] 瓣膜；真空管；活门；vt. 装阀于；以活门调节
例句 Figure 1 for the valve structure and working principle diagram.
Replacement 英 /rɪ'pleɪsm(ə)nt/ 美 /rɪ'plesmənt/
释义 n. 更换；复位；代替者；补充兵员
例句 The new packaging is all about replacement.
作者： Chetan P. Huded
Surgical aortic valve replacement (SAVR) and transcatheter aortic valve replacement (TAVR) are the mainstays of treatment of severe calcific aortic stenosis (AS), as they improve symptoms and prolong survival. For patients with severe calcific native aortic valve stenosis (AS) with an indication for valve replacement, intervention options include surgical aortic valve replacement (SAVR) or transcatheter aortic valve implantation (TAVI, also known as transcatheter aortic valve replacement or TAVR). A multidisciplinary team approach is recommended in approaching patients with severe AS, as the decisions involved here are complex. For patients with asymptomatic severe AS with an indication for valve replacement (eg, presence of LV ejection fraction (LVEF) <50 percent, very severe AS, or fall in systemic blood pressure with exercise), the choice of SAVR versus TAVR is based upon an individualized risk-benefit assessment including the estimated surgical risk (with intermediate or higher estimated surgical risk favoring TAVR and low estimated surgical risk favoring SAVR) and estimated risk of complications with TAVR (with feasibility of transfemoral TAVR and absence of high risk anatomic features favoring TAVR). There is limited evidence comparing SAVR versus TAVR in asymptomatic patients as these patients were excluded from most of the supporting trials.