Left ventricular outflow tract obstruction (LVOTO)

Left Ventricular ◽

Outflow Tract ◽

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....

Left ventricular outflow tract obstruction

10.1093/med/9780199685288.003.0130_update_003 ◽

2016 ◽

Author(s):

Demosthenes G. Katritsis ◽

Bernard J. Gersh ◽

A. John Camm

Keyword(s):

Aortic Valve ◽

Aortic Stenosis ◽

Bicuspid Aortic Valve ◽

Left Ventricular ◽

Outflow Tract ◽

Left Ventricular Outflow ◽

Valvular Aortic Stenosis

Conditions that result in left ventricular outflow tract obstruction, i.e. valvular aortic stenosis, due to a bicuspid aortic valve, and subvalvular and supravalvular aortic stenosis are discussed.

Accessory Mitral Valve Associated With Coarctation of the Aorta and Bicuspid Aortic Valve Without Left Ventricular Outflow Tract Obstruction

Journal of Cardiothoracic and Vascular Anesthesia ◽

10.1053/j.jvca.2011.09.025 ◽

2013 ◽

Vol 27 (3) ◽

pp. 549-550

Author(s):

Christopher K. Gilbertson ◽

Paul W. Weldner ◽

Christopher W. Connors

Keyword(s):

Mitral Valve ◽

Aortic Valve ◽

Bicuspid Aortic Valve ◽

Coarctation Of The Aorta ◽

Left Ventricular ◽

Outflow Tract ◽

Left Ventricular Outflow

Complex and multilevel left ventricular outflow tract obstruction: What can 3D echocardiography add?

The Egyptian Heart Journal ◽

10.1186/s43044-021-00197-y ◽

2021 ◽

Vol 73 (1) ◽

Author(s):

Hoda Abdelgawad ◽

Mahmoud Shehata ◽

Mahmoud Abdelnabi ◽

Abdallah Almaghraby ◽

Mohamed Ayman Abdel-Hay

Keyword(s):

Aortic Valve ◽

Young Patients ◽

Left Ventricular ◽

Outflow Tract ◽

3D Echocardiography ◽

Main Body ◽

Left Ventricular Outflow

Abstract Background Subaortic obstruction by a membrane or systolic anterior motion of the mitral valve leaflets is usually suspected in young patients, especially if the anatomy of the aortic valve is not clearly stenotic and unexplained left ventricular hypertrophy exists in the context of high transaortic gradients. Main body In certain circumstances, some patients show both aortic and subaortic stenotic lesions of variable severity. Doppler echocardiography can help in grading severity in the case of single-level obstruction but not in patients with multilevel obstruction where the continuity equation is of no value. Three-dimensional (3D) echocardiography allows "en-face" visualization of each level of the aortic valve and subaortic tract; in addition, direct planimetry of the areas can be done using multiplanar reformatting. Conclusions Accordingly, 3D echocardiography plays a crucial role in the assessment in patients with multilevel left ventricular outflow tract obstruction as it can accurately delineate the location and size, and severity of the stenosis.

Aortic stenosis and left ventricular outflow tract obstruction

ESC CardioMed ◽

10.1093/med/9780198784906.003.0190_update_001 ◽

2018 ◽

pp. 807-810

Author(s):

David Anderson

Keyword(s):

Aortic Stenosis ◽

Left Ventricular ◽

Outflow Tract ◽

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.