2024年10月18日 · In aortic valve stenosis, the valve is narrowed and doesn't open fully. This reduces or blocks blood flow from the heart to the aorta and to the rest of the body. Treatment of aortic stenosis depends on how severe the condition is. Treatment may include surgery to fix or replace the valve.

2024年5月23日 · Aortic stenosis is a narrowing of the aortic valve opening and can sometimes be referred to as a failing heart valve. Aortic stenosis restricts the blood flow from the left ventricle to the aorta may also affect the pressure in the left atrium.

2024年5月30日 · Severe AS, sometimes referred to as a failing heart valve, is a life-threatening condition. The treatment for severe AS is aortic valve replacement.

Aortic stenosis (AS or AoS) is the narrowing of the exit of the left ventricle of the heart (where the aorta begins), such that problems result. [1] . It may occur at the aortic valve as well as above and below this level. [1] . It typically gets worse over time. [1] .

2019年2月2日 · Severe aortic stenosis (AS) is currently defined by an aortic valve area (AVA) <1.0 cm 2 and/or a mean transaortic pressure gradient (MPG) >40 mm Hg and/or a peak aortic jet velocity (V max) >4 m/s. 1, 2

2015年2月4日 · Severe AS is defined by current guidelines as calcified or thickened valve leaflets with reduced systolic opening and an antegrade velocity across the valve of 4.0 m/s or higher, equivalent to a mean systolic transaortic pressure gradient of 40 mm Hg or higher.

2011年7月19日 · Aortic stenosis is becoming more frequent as the average age of the population increases; it affects up to 5% of the elderly population. 1 The diagnosis of severe AS is most easily defined by Doppler echocardiography with maximum aortic jet velocity >4.0 m/s, mean transvalvular pressure gradient >40 mm Hg, and continuity equation valve area <1. ...

2020年2月6日 · This review addresses early risk features associated with asymptomatic severe AS in an attempt to help inform management. The following are key points to remember: Echocardiography/Doppler continue to provide important data …

2021年4月13日 · Echocardiography is the key investigation for establishing the presence and severity of aortic stenosis (AS). Severe AS is characterized by a peak transvalvular velocity of >4 m/s, a mean gradient > 40 mmHg, and a valve area of <1.0 cm 2 (<0.6 cm 2 /m 2 when indexed for body surface area).

2021年10月8日 · Aortic stenosis (AS) is defined as severe in the presence of: mean gradient ≥40 mmHg, peak aortic velocity ≥4 m/s, and aortic valve area (AVA) ≤1 cm 2 (or an indexed AVA ≤0.6 cm 2 /m 2).