الفهرس 
Introduction and Aim of the WorkOnly 14 pages are availabe for public view
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Abstract
SUMMARY
Aortic valve replacement has produced a dramatic change in
the nature history of AS. Measurement of the degree of LVH in
patients with AS, particularly the assessment of the regression of
such hypertrophy after valve replacement is of major
importance.
Regression of left ventricular mass after aortic valve
replacement may reduce the long-term complications of sudden
death and congestive heart failure associated with left
ventricular hypertrophy.
In the previous studies, it was found that LVH regression is a
time-consuming process and occurs over a period of several
months.
We studied 30 patients with isolated AS who underwent AVR
by mechanical valves. We measured LV dimensions, LVM,
LVMI as well as Mean, Max PG at the aortic valve. We found
that there was a significant reduction in LV dimensions
immediately post operative followed by less reduction at 3
month follow up, more evident in LVEDD, LVESD.
The Aortic valve Max PG was significant reduced
immediately post operative (70.30±16.51%) followed by further
but less reduction at 3 months follow up (5.95±1.50%).
Similarly The Aortic valve Mean PG was significant reduced
immediately post operative (60.13±9.50%) followed by further
but less reduction at 3 months follow up (1.95±0.83%).
the LVM& LVMI showed significant reduction immediately
post operative followed by further less reduction at 3 months
follow up (20.61±14.26% to 14.08±10.50%) and
(19.86±14.62% to 12.95±10.19%) respectively.And this was comparable to other studies which showed
similar results.
However, dimensionless index that also showed increase
immediately post operative& at 3 months follow up and may be
the most helpful index for prosthetic valve stenosis.