Assessment of aortic regurgitation by transesophageal color Doppler imaging of the vena contracta: validation against an intraoperative aortic flow probe
DuWayne L. Willett, MD, FACCa,b,
Shelley A. Hall, MD, FACCa,b,
Michael E. Jessen, MD, FACCa,b,
Michael A. Wait, MD, FACCa,b and
Paul A. Grayburn, MD, FACCa,b
a Department of Internal Medicine, Division of Cardiology, UT Southwestern Medical Center and Dallas VA Medical Center, Dallas, Texas, USA
b Department of Cardiovascular and Thoracic Surgery, UT Southwestern Medical Center and Dallas VA Medical Center, Dallas, Texas, USA
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Figure 1 Representative images of the vena contracta from a patient in this study. Left: the long-axis view; right: the short-axis view.
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Figure 2 Representative flow probe tracing from a patient in this study. Electronic zero and calibration (cal) are shown toward the left. The flow signal above the baseline displays forward flow in the ascending aorta; regurgitant flow is below the baseline (striped area).
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Figure 3 Linear regression plots showing a comparison of vena contracta width in the long-axis view to regurgitant fraction (left) and regurgitant volume (right). The two patients depicted by dark circles had acute severe aortic regurgitation.
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Figure 4 Linear regression plots showing a comparison of vena contracta area in the short-axis view to regurgitant fraction (left) and regurgitant volume (right). The two patients depicted by dark circles had acute severe aortic regurgitation.
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