Determining Aortic Stenosis Severity: What to Do When Measuring Left Ventricular Outflow Tract Diameter Is Difficult

2009 ◽  
Vol 22 (5) ◽  
pp. 452-453 ◽  
Author(s):  
Mark A. Johnson ◽  
Robert R. Moss ◽  
Brad Munt
Keyword(s):  
Aortic Stenosis ◽  
Left Ventricular Outflow Tract ◽  
Ventricular Outflow Tract ◽  
Left Ventricular ◽  
Outflow Tract ◽  
Stenosis Severity ◽  
Left Ventricular Outflow

scholarly journals Three-Dimensional Morphology of the Left Ventricular Outflow Tract: Impact on Grading Aortic Stenosis Severity

2017 ◽  
Vol 30 (1) ◽  
pp. 28-35 ◽  
Author(s):  
Luis Caballero ◽  
Daniel Saura ◽  
María José Oliva-Sandoval ◽  
Josefa González-Carrillo ◽  
María Dolores Espinosa ◽  
...  
Keyword(s):  
Aortic Stenosis ◽  
Left Ventricular Outflow Tract ◽  
Three Dimensional ◽  
Ventricular Outflow Tract ◽  
Left Ventricular ◽  
Outflow Tract ◽  
Stenosis Severity ◽  
Left Ventricular Outflow

Aortic stenosis and left ventricular outflow tract obstruction

ESC CardioMed ◽  
2018 ◽  
pp. 807-810
Author(s):  
David Anderson
Keyword(s):  
Aortic Stenosis ◽  
Left Ventricular Outflow Tract ◽  
Ventricular Outflow Tract ◽  
Left Ventricular ◽  
Outflow Tract ◽  
Ventricular Outflow Tract Obstruction ◽  
Long Term Follow Up ◽  
Balloon Valvotomy ◽  
Left Ventricular Outflow

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.

scholarly journals Subaortic stenosis and mitral dysplasia in three Black Russian Terrier puppies

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.

Left ventricular outflow tract obstruction (LVOTO)

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....

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