Aortic valve area in aortic stenosis in adults - UpToDate
2020年5月10日 · Echocardiographic evaluation of the aortic valve; Hemodynamics of valvular disorders as measured by cardiac catheterization; Indications for valve replacement for high gradient aortic stenosis in adults; Low gradient severe aortic …
Aortic valve area in aortic stenosis in adults - UpToDate
In adults with normal aortic valves, the valve area is approximately 3.0 to 4.0 cm 2. As aortic stenosis (AS) develops, minimal pressure gradient is present until the orifice area becomes less than half of normal.
Echocardiographic evaluation of the aortic valve - UpToDate
2023年1月5日 · The aortic valve is composed of three cusps: the left, right, and noncoronary cusps. The left cusp guards the left sinus of Valsalva, with the left main coronary artery arising superior to and midway between the commissures of this cusp.
Clinical manifestations and diagnosis of aortic stenosis in adults
Aortic valve stenosis is the most common cause of left ventricular outflow obstruction in children and adults; less common causes are subvalvular or supravalvular disease . This topic will review the clinical features, diagnosis, and evaluation of valvular aortic stenosis (AS) .
Valvular heart disease in older adults - UpToDate
2021年12月2日 · The prevalence of at least moderate AS, defined as an aortic valve area (AVA) ≤1.2 cm 2 and velocity ratio ≤0.35, was 5 percent; the prevalence of critical AS (AVA ≤0.8 cm 2, and velocity ratio ≤0.25) increased with age from 1 to 2 percent in persons 75 to 76 years of age up to almost 6 percent in those 86 years of age .
Indications for valve replacement for high gradient aortic
2022年6月16日 · Severe high gradient AS is generally identified by an aortic jet velocity over ≥4.0 m/s or mean transvalvular pressure gradient ≥40 mmHg, as well as the typical appearance of the valve with severely reduced leaflet opening ; an aortic valve area (AVA) ≤1.0 cm 2 is typically seen but is not required to identify high gradient severe AS ...
Auscultation of cardiac murmurs in adults - UpToDate
2022年4月18日 · As noted in major society guidelines, an echocardiogram is indicated for the diagnosis and evaluation of patients with known or suspected valve disease . Echocardiography is not needed in asymptomatic patients with a benign flow murmur but is appropriate in patients with cardiac symptoms and any cardiac murmur.
Medical management of asymptomatic aortic stenosis in adults
In individuals with normal aortic valves, the effective area of valve opening equals the cross-sectional area of the left ventricular (LV) outflow tract, which is approximately 3.0 to 4.0 cm 2 in adults. As aortic stenosis (AS) develops, a minimal valve gradient is present until the orifice area becomes less than half of normal.
Transcatheter aortic valve implantation: Periprocedural and
2024年9月9日 · Aortic valve replacement (AVR) is the mainstay of treatment of symptomatic severe aortic stenosis (AS). The role of transcatheter aortic valve implantation (TAVI; also known as transcatheter aortic valve replacement or TAVR) as an alternative to surgical aortic valve replacement (SAVR) is established, and in 2019, the number of TAVIs exceeded ...
Clinical manifestations and diagnosis of aortic stenosis in adults
2022年4月18日 · Aortic valve stenosis is the most common cause of left ventricular (LV) outflow obstruction in children and adults; less common causes are subvalvular or supravalvular disease . This topic will review the clinical features, diagnosis, and evaluation of …