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Illinois Cardiac Surgery Associates, 515 NE Glen Oak Dr, Suite 202, Peoria, IL 60613
(Email: georgekoullias@hotmail.com).
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I read with great interest the article of Shingu and colleagues [1], demonstrating an elevated augmentation index (AI) in thoracic aortic aneurysms and thoracic aortic dissections.
The concept of AI is not very well known to many cardiac surgeons, but it has received intense study and attention in the last decade of the cardiac physiology literature.
As the incident systolic pressure wave generated by cardiac ejection encounters zones in impedance, such as arterial bifurcations and obstructive lesions, part of the wave is reflected backward,
Related Article
Ann. Thorac. Surg. 2009 87: 1373-1377.
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