21.   Actor and muscle-man Arnold Schwarzenegger underwent elective aortic valve replacement surgery for a congenital heart valve condition, his publicist said Wednesday.

a. + valve >>共 146
faulty 7.72%
aortic 6.23%
new 3.56%
shut-off 3.56%
leaky 3.26%
mechanical 2.37%
flush 2.08%
mixing 1.78%
weak 1.78%
pressure-reducing 1.78%
aortic + n. >>共 12
aneurysm 42.31%
valve 26.92%
dissection 6.41%
heart 5.13%
rupture 5.13%
stenosis 5.13%
wall 2.56%
aneurism 1.28%
are 1.28%
balloon 1.28%
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