Editorial
Subaortic stenosis: still more questions than answers
| The first 150 words of the full text of this article appear below. |
One of
the most striking features about subaortic stenosis is the diversity of
lesions that it encompasses and the inconsistency of terms used in its
classification. Authors use the same terminology to denote different
conditions and a variety of names for identical lesions. Some terms are
descriptive, others histological or anatomical. Choi and
Sullivan1 suggested a classification based on
morphological features that can be determined on cross sectional
echocardiography (table 1).
| Table Removed (Available Only in the Full Text) |
Short segment obstruction is defined as subaortic stenosis with a
length of less than one third of the aortic valve diameter, and
consists of types previously termed membranous, diaphragm, discrete,
fixed, fibrous or fibromuscular. The advantage of the term "short
segment" is that it avoids descriptions that are inaccurate, and does
not imply a histological diagnosis for that seen on echocardiography. Long segment subaortic obstruction is defined as stenosis that has a
length of more than one third
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