New Left Ventricular Outflow Tract Measurement for Assessment of Aortic Stenosis: Inter- and Intra-observer Variability and Reproducibility

Left ventricular outflow tract obstruction can occur at subvalvar, valvar, and supravalvar levels. Severity and progression can be evaluated by echocardiography. Aortic valve stenosis can usually be relieved by balloon valvotomy, but some patients require surgery, either with valvotomy, valve replacement, or the Ross procedure. Sub- and supravalvar aortic stenosis require surgical management. Long-term follow-up of all patients is required.

Download Full-text

Subaortic stenosis and mitral dysplasia in three Black Russian Terrier puppies

Veterinární Medicína ◽

10.17221/5630-vetmed ◽

2012 ◽

Vol 50 (No. 7) ◽

pp. 321-326

Author(s):

J. Pikula ◽

J. Pikulova ◽

H. Bandouchova ◽

P. Kohout ◽

K. Najman ◽

...

Keyword(s):

Mitral Valve ◽

Aortic Stenosis ◽

Left Ventricular Outflow Tract ◽

Ventricular Outflow Tract ◽

Left Ventricular ◽

Outflow Tract ◽

Subaortic Stenosis ◽

Maximum Pressure ◽

Mitral Insufficiency ◽

Left Ventricular Outflow

A combined congenital heart defect of aortic stenosis and mitral dysplasia was diagnosed in three Black Russian Terrier puppies two months old. The aortic stenosis component included both fixed and dynamic obstructions. The fixed obstruction was subvalvularly located at the entrance to the left ventricular outflow tract. The dynamic obstruction was caused by the septal leaflet of the mitral valve protruding into the left ventricular outflow tract. Mitral dysplasia resulted in mitral insufficiency leading to regurgitation through the mitral valve closer to the septal side. The maximum pressure gradient across the aortic valve amounting to 103 mmHg measured in one puppy was consistent with the most severe grade of stenosis. The diagnosis was confirmed by autopsy in all three puppies that were males and originated in one litter, so genetic influences are supposed.

Download Full-text

Subvalvular Aortic Stenosis (Membranous Type with Circular Web) with Severe Left Ventricular Outflow Tract and Moderate Aortic Regurgitation

Echocardiographic Atlas of Adult Congenital Heart Disease ◽

10.1007/978-3-319-12934-1_92 ◽

2015 ◽

pp. 297-300

Author(s):

Hakimeh Sadeghian ◽

Zahra Savand-Roomi

Keyword(s):

Aortic Stenosis ◽

Aortic Regurgitation ◽

Left Ventricular Outflow Tract ◽

Ventricular Outflow Tract ◽

Left Ventricular ◽

Outflow Tract ◽

Left Ventricular Outflow ◽

Subvalvular Aortic Stenosis

Download Full-text

Beta-blocker stress echocardiography in an aortic stenosis patient with associated left ventricular outflow tract obstruction

Journal of Echocardiography ◽

10.1007/s12574-014-0212-6 ◽

2014 ◽

Vol 12 (2) ◽

pp. 68-70

Author(s):

Masataka Sugahara ◽

Akiko Goda ◽

Mitsuru Masaki ◽

Ayumi Nakabo ◽

Shohei Fujiwara ◽

...

Keyword(s):

Aortic Stenosis ◽

Beta Blocker ◽

Stress Echocardiography ◽

Left Ventricular Outflow Tract ◽

Ventricular Outflow Tract ◽

Left Ventricular ◽

Outflow Tract ◽

Ventricular Outflow Tract Obstruction ◽

Left Ventricular Outflow

Download Full-text

Left ventricular outflow tract obstruction (LVOTO)

10.1093/med/9780199228188.003.0008 ◽

2011 ◽

Keyword(s):

Aortic Valve ◽

Aortic Stenosis ◽

Bicuspid Aortic Valve ◽

Left Ventricular Outflow Tract ◽

Ventricular Outflow Tract ◽

Left Ventricular ◽

Outflow Tract ◽

Ventricular Outflow Tract Obstruction ◽

Left Ventricular Outflow ◽

Different Levels

Introduction 68Subvalvar aortic stenosis (AS) 70Bicuspid aortic valve 72Supravalvar AS 74LVOTO may occur at different levels: • Subvalvular.• Valvular—including bicuspid aortic valve.• Supravalvular.• Coarctation— see p.118.Effects of LVOTO, irrespective of site of lesion, are: • ↑ afterload on LV....

Download Full-text