Malrotated sinus vortices in straight graft valve-sparing aortic root treatment: A matter of concern? Thekla H. Oechtering, MD, Alex Frydrychowicz, MD,

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Presentation transcript:

Malrotated sinus vortices in straight graft valve-sparing aortic root treatment: A matter of concern? Thekla H. Oechtering, MD, Alex Frydrychowicz, MD, Hans-Hinrich Sievers, MD The Journal of Thoracic and Cardiovascular Surgery Volume 154, Issue 3, Pages 794-797 (September 2017) DOI: 10.1016/j.jtcvs.2017.02.024 Copyright © 2017 The American Association for Thoracic Surgery Terms and Conditions

Figure 1 Aortic root hemodynamics in healthy volunteers and patients without sinuses of Valsalva. Schematic view (A) and 4-dimensional flow magnetic resonance imaging streamline visualization (B) of aortic root hemodynamics in a volunteer with sinuses of Valsalva (1A and 1B). At peak systole, sinus vortices form behind the opened valve leaflets in the aortic sinuses. The valve leaflets do not contact the aortic wall because they are stabilized by the vortices. In a straight graft without aortic sinuses (2A and 2B), there is no place for proper vortex formation behind the opened valve leaflets and the valve leaflets collide with the prosthesis wall (red arrows). For corresponding videos, please refer to Videos 1 and 2. The Journal of Thoracic and Cardiovascular Surgery 2017 154, 794-797DOI: (10.1016/j.jtcvs.2017.02.024) Copyright © 2017 The American Association for Thoracic Surgery Terms and Conditions

Figure 2 Sinus vortices in a patient after the David procedure (male, aged 41 years) and in a healthy volunteer (female, aged 53 years). Hemodynamics in the thoracic aorta visualized by particle paths color-coded to the flow velocity (top row). Side view (middle row) and front view (bottom row) of a sinus vortex in the right-coronary sinus displayed as instantaneous streamlines. The patient's sinus vortex is small and malrotated 90 degrees along the vessel axis in comparison with the volunteer's vortex. Dashed lines emphasize the vessel wall. Yellow arrows underline vortex direction. Rotation axis is marked as yellow bar or dot, depending on viewing angle. For corresponding videos please refer to Videos 3 and 4. The Journal of Thoracic and Cardiovascular Surgery 2017 154, 794-797DOI: (10.1016/j.jtcvs.2017.02.024) Copyright © 2017 The American Association for Thoracic Surgery Terms and Conditions

Malrotated patient's vortex after straight graft David procedure compared with a volunteer. The Journal of Thoracic and Cardiovascular Surgery 2017 154, 794-797DOI: (10.1016/j.jtcvs.2017.02.024) Copyright © 2017 The American Association for Thoracic Surgery Terms and Conditions

Video 1 Aortic root hemodynamics in a healthy volunteer. Four-dimensional flow magnetic resonance imaging particle path visualization of aortic root hemodynamics in a volunteer with sinuses of Valsalva (female, aged 25 years). At peak systole, sinus vortices form behind the opened valve leaflets in the aortic sinuses. Video available at: http://www.jtcvsonline.org/article/S0022-5223(17)30264-7/addons. The Journal of Thoracic and Cardiovascular Surgery 2017 154, 794-797DOI: (10.1016/j.jtcvs.2017.02.024) Copyright © 2017 The American Association for Thoracic Surgery Terms and Conditions

Video 2 Aortic root hemodynamics in a patient after straight graft root replacement. Four-dimensional flow magnetic resonance imaging particle path visualization of aortic root hemodynamics in a patient after David procedure with a straight graft (male, aged 66 years). In a straight graft without aortic sinuses, there is no place for proper vortex formation behind the opened valve leaflets. Video available at: http://www.jtcvsonline.org/article/S0022-5223(17)30264-7/addons. The Journal of Thoracic and Cardiovascular Surgery 2017 154, 794-797DOI: (10.1016/j.jtcvs.2017.02.024) Copyright © 2017 The American Association for Thoracic Surgery Terms and Conditions

Video 3 Sinus vortices in a healthy volunteer. Four-dimensional flow magnetic resonance imaging particle path visualization of aortic root hemodynamics in a volunteer (female, aged 53 years). At peak systole, sinus vortices form behind the opened valve leaflets in the aortic sinuses with their rotation axis parallel to the vessel wall in side view. Video available at: http://www.jtcvsonline.org/article/S0022-5223(17)30264-7/addons. The Journal of Thoracic and Cardiovascular Surgery 2017 154, 794-797DOI: (10.1016/j.jtcvs.2017.02.024) Copyright © 2017 The American Association for Thoracic Surgery Terms and Conditions

Video 4 Sinus vortices in a patient after the David procedure. Four-dimensional flow magnetic resonance imaging particle path visualization of aortic root hemodynamics in a patient after the David procedure with a straight graft (male, aged 41 years). In a straight graft without aortic sinuses, there is no place for proper vortex formation behind the opened valve leaflets. The patient's sinus vortex is small with a rotation axis orthogonal to the prosthesis wall in side view. Thus, the vortex is malrotated 90° along the vessel axis in comparison with the volunteer's vortex. Video available at: http://www.jtcvsonline.org/article/S0022-5223(17)30264-7/addons. The Journal of Thoracic and Cardiovascular Surgery 2017 154, 794-797DOI: (10.1016/j.jtcvs.2017.02.024) Copyright © 2017 The American Association for Thoracic Surgery Terms and Conditions