Flow study of an extracardiac connection with persistent left superior vena cava Diane A. de Zélicourt, MSc, Kerem Pekkan, PhD, James Parks, MD, Kirk.

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Presentation transcript:

Flow study of an extracardiac connection with persistent left superior vena cava Diane A. de Zélicourt, MSc, Kerem Pekkan, PhD, James Parks, MD, Kirk Kanter, MD, Mark Fogel, MD, Ajit P. Yoganathan, PhD The Journal of Thoracic and Cardiovascular Surgery Volume 131, Issue 4, Pages 785-791 (April 2006) DOI: 10.1016/j.jtcvs.2005.11.031 Copyright © 2006 The American Association for Thoracic Surgery Terms and Conditions

Figure 1 A, Original TCPC configuration seen from a right and from an anterior perspective. B, Modified anatomy after the virtual operation was performed. The IVC was transected and displaced by 25 mm to lie in between the 2 SVCs. The Journal of Thoracic and Cardiovascular Surgery 2006 131, 785-791DOI: (10.1016/j.jtcvs.2005.11.031) Copyright © 2006 The American Association for Thoracic Surgery Terms and Conditions

Figure 2 Qualitative (flow visualization) and quantitative (digital particle velocimetry) assessment of the flow structures observed in the original anatomy with a resting cardiac output of 2 L/min and varying RPA/LPA flow splits. The Journal of Thoracic and Cardiovascular Surgery 2006 131, 785-791DOI: (10.1016/j.jtcvs.2005.11.031) Copyright © 2006 The American Association for Thoracic Surgery Terms and Conditions

Figure 3 Experimental (blue) and numeric (red) power losses for the original and modified anatomies at total cardiac outputs of at 2, 3, and 4 L/min. The gray dashed line shows the flow split obtained in the original anatomy when an equal lung resistance of 1.8 Wood units was assumed. The Journal of Thoracic and Cardiovascular Surgery 2006 131, 785-791DOI: (10.1016/j.jtcvs.2005.11.031) Copyright © 2006 The American Association for Thoracic Surgery Terms and Conditions

Figure 4 CFD in-plane velocities (A-1 and B-1) and streamlines (A-2 and B-2) within the original (A) and modified (B) anatomies. Flow conditions included a total cardiac output of 4 L/min and a pulmonary flow split of 65:35 RPA/LPA. The streamlines are color-coded in red for the IVC, blue for the right SVC, and red for the left SVC. The Journal of Thoracic and Cardiovascular Surgery 2006 131, 785-791DOI: (10.1016/j.jtcvs.2005.11.031) Copyright © 2006 The American Association for Thoracic Surgery Terms and Conditions