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Subaortic Stenosis

  • Anita SadeghpourEmail author
  • Azin Alizadehasl
  • Majid Kyavar
Chapter

Abstract

This lesion includes a ridge or fibrous ring encircling the left ventricular (LV) outflow tract in varying distances from the aortic valve (AV). This fibrous process usually extends onto the AV leaflets and almost always makes contact with the ventricular aspect of the anterior mitral valve (MV) leaflet at its base.

Keywords

Sub-aortic stenosis Echocardiography Discrete fibromuscular Left ventricular outflow tract (LVOT) Left ventricular hypertrophy (LVH) 

Supplementary material

Video 36.1

Parasternal long-axis view showing a discrete fibrous ring encircling the left ventricular (LV) outflow tract with extension to the anterior MV leaflet (white arrows) (MPG 3592 kb)

Video 36.2

2D and color Doppler study in apical 5 chamber view demonstrating the discrete subaortic membrane resulting turbulent flow in LVOT, Color flow Doppler study is helpful for identifying the level of stenosis. In the subaortic stenois turbulent flow originate from the LVOT rather than either the AV annulus or above the AV (MPG 3662 kb)

Video 36.3

2D and color Doppler study in apical 5 chamber view demonstrating the discrete subaortic membrane resulting turbulent flow in LVOT, Color flow Doppler study is helpful for identifying the level of stenosis. In the subaortic stenois turbulent flow originate from the LVOT rather than either the AV annulus or above the AV (MPG 3314 kb)

Video 36.4

Transesophageal echocardiography in long-axis view demonstrating fibromuscular ridge encircling the left ventricular (LV) outflow tract (white arrow) with extension to the anterior MV leaflet and aortic valve (MPG 1436 kb)

Video 36.5

Typical LVOT narrowing in subaortic stenosis in left ventriculography (WMV 1426 kb)

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Copyright information

© Springer-Verlag London 2014

Authors and Affiliations

  • Anita Sadeghpour
    • 1
    Email author
  • Azin Alizadehasl
    • 2
  • Majid Kyavar
    • 3
  1. 1.Echocardiography Lab, Department of CardiologyAdult Congenital Heart Disease Clinic, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical ScienceTehranIran
  2. 2.Echocardiography Lab, Department of CardiologyRajaie Cardiovascular Medical and Research Center, Iran University of Medical ScienceTehranIran
  3. 3.Cardiovascular Imaging Ward, Department of CardiologyAdult Congenital Heart Disease Clinic, Rajaie Cardiovascular Medical and Research Center, Iran University of Medical ScienceTehranIran

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