Immediate effect of aortic valve replacement for aortic stenosis on left ventricular diastolic chamber stiffness - 08/09/11
: BChAbstract |
Diastolic dysfunction is common after coronary artery bypass surgery, and we hypothesized that left ventricular (LV) hypertrophy associated with aortic stenosis may lead to worsening LV diastolic function after aortic valve replacement for aortic stenosis. Transesophageal echocardiographic LV images and simultaneous pulmonary arterial wedge pressures were used to define the LV diastolic pressure cross-sectional area relation before and immediately after aortic valve replacement for aortic stenosis in 14 patients. In all patients, LV diastolic chamber stiffness increased, as evidenced by a leftward shift in the LV diastolic pressure cross-sectional area relation. At comparable LV filling (pulmonary arterial wedge) pressures the mean LV end-diastolic cross-sectional area preoperatively was 17.9 ± 1.7 cm2, but decreased by 32% after aortic valve replacement to 12.1 ± 1.2 cm2 (p = 0.0001). In conclusion, after aortic valve replacement, diastolic chamber stiffness increased in all patients.
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Vol 84 - N° 8
P. 914-918 - octobre 1999 Retour au numéro
Article précédent
- Angiotensin-converting enzyme gene polymorphism influences degree of left ventricular hypertrophy and its regression in patients undergoing operation for aortic stenosis
- Göran Dellgren, Maria J Eriksson, Irina Blange, Lars-Åke Brodin, Kjell Rådegran, Christer Sylvén
- Minimally invasive direct access for repair of atrial septal defect in adults
- John G Byrne, David H Adams, Michael E Mitchell, Lawrence H Cohn
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