Metabolic Syndrome: Stronger association With Coronary Artery

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Hemodynamic performance of the aortic prosthesis
by stress echocardiography
Sadeghian H., Kamangari A., Marzban M., Hossein Mandegar M.,
Darvish S. and Fallah N.
Chirurgia 2006 19:6 (427-430)
Aim. To study the effect of prosthetic aortic valve size on
hemodynamic performance at rest and after exercise. Methods.
Twelve patients (mean age 40.5 years) who had underwent aortic
valve replacement (AVR) 61 months ago because of severe aortic
stenosis were evaluated. Results. Nine patients received St-Jude and
3 patients received other types of prosthetic valves .Sixty percent of
patients had ideal hemodynamic results at rest and peak exercise
(group A1), 42% of patients had good hemodynamic results at rest
but inappropriate at peak exercise (group A2) and 42% of patients
had inappropriate hemodynamic results at rest (group B). Patient
annulus index is significantly different between group A1 and B but
the difference of annulus index between group AI and AII has a trend
for being significant Peak gradient and mean gradient increased
significantly with exercise. Decreases of effective orifice area,
effective orifice area index and performance index were also
significant at peak exercise. None of our 12 patients had mismatch at
rest, but 6 patients had mismatch at stress. Patient annulus index
has a significant correlation with mismatch at peak exercise.
Conclusions. According to this study, we may consider aortic root
enlargement when the patient annulus index is small.