Presentation is loading. Please wait.

Presentation is loading. Please wait.

Further insights into normal aortic valve function: role of a compliant aortic root on leaflet opening and valve orifice area  Vangipuram Canchi Sripathi,

Published byIrwan Kartawijaya Modified over 6 years ago

Similar presentations

Presentation on theme: "Further insights into normal aortic valve function: role of a compliant aortic root on leaflet opening and valve orifice area  Vangipuram Canchi Sripathi,"— Presentation transcript:

1 Further insights into normal aortic valve function: role of a compliant aortic root on leaflet opening and valve orifice area  Vangipuram Canchi Sripathi, B.Tech, Ramarathnam Krishna Kumar, PhD, Komarakshi R Balakrishnan, MD  The Annals of Thoracic Surgery  Volume 77, Issue 3, Pages (March 2004) DOI: /S (03)

2 Fig 1 The opening and closing of the aortic leaflets inside a normal root and a stiff root. (a) Opening mode–normal root. (b) Opening mode–stiff root. (c) Opened mode–normal root. (d) Opened position–stiff root. (e) Closing mode–normal root. (f) Closing mode–stiff root. The Annals of Thoracic Surgery  , DOI: ( /S (03) )

3 Fig 2 (a) Displacement diagram of the nodule of Arantius and the commissure point. (b) Pressure–time graph used in this work. The Annals of Thoracic Surgery  , DOI: ( /S (03) )

4 Fig 3 (a) Opening at position “B.” (b) Opening at position “C.” (c) Circular shape of the normal leaflet in a stiff root at position B1. The Annals of Thoracic Surgery  , DOI: ( /S (03) )

5 Fig 4 Relationship between the root area and the systolic pressure.
The Annals of Thoracic Surgery  , DOI: ( /S (03) )

6 Fig 5 (a) Variation of effective valve orifice area (EVOA) with pressure (mm Hg) and gradient for a normal valve. (b) Variation of EVOA with pressure (mm Hg) and gradient for a stiff root. The Annals of Thoracic Surgery  , DOI: ( /S (03) )

7 Fig 6 Variation of effective valve orifice area pressure for various gradients (mm Hg) for a normal root. The Annals of Thoracic Surgery  , DOI: ( /S (03) )

8 Fig 7 (a) Leaflet (dark) bending against the root (green) 2 mm gradient. An echocardiogram picture showing the gap between leaflet and the wall. (b) Leaflet (dark) bending against the root (green) 8 mm gradient. The Annals of Thoracic Surgery  , DOI: ( /S (03) )

9 Fig 8 (a) Maximum (Max.) principal stress (S) in the leaflets with normal root during opening. (b) Maximum principal stress in the leaflets with stiff root during opening. (c) Minimum (Min.) principal stress in the leaflets with normal root during opening. (d) Minimum principal stress in the leaflets with stiff root during opening. (Ave. Crit. = nodal averaging criteria; SNEG = surface negative; SPOS = surface positive.) The Annals of Thoracic Surgery  , DOI: ( /S (03) )

Download ppt "Further insights into normal aortic valve function: role of a compliant aortic root on leaflet opening and valve orifice area  Vangipuram Canchi Sripathi,"

Similar presentations

Functional Collagen Fiber Architecture of the Pulmonary Heart Valve Cusp  Erinn M. Joyce, BS, Jun Liao, PhD, Frederick J. Schoen, MD, PhD, John E. Mayer,

Functional Collagen Fiber Architecture of the Pulmonary Heart Valve Cusp  Erinn M. Joyce, BS, Jun Liao, PhD, Frederick J. Schoen, MD, PhD, John E. Mayer,
Aortic Valve Replacement With Patch Enlargement of the Aortic Annulus

Aortic Valve Replacement With Patch Enlargement of the Aortic Annulus
Postoperative Left Ventricular Mass Regression After Aortic Valve Replacement for Aortic Stenosis  Hiroshi Tomoeda, MD, Tomohiro Ueda, MD, Hideki Teshima,

Postoperative Left Ventricular Mass Regression After Aortic Valve Replacement for Aortic Stenosis  Hiroshi Tomoeda, MD, Tomohiro Ueda, MD, Hideki Teshima,
Aortic Root Biomechanics After Sleeve and David Sparing Techniques: A Finite Element Analysis  Giordano Tasca, MD, Matteo Selmi, MS, Emiliano Votta, PhD,

Aortic Root Biomechanics After Sleeve and David Sparing Techniques: A Finite Element Analysis  Giordano Tasca, MD, Matteo Selmi, MS, Emiliano Votta, PhD,
Late Surgical Explantation and Aortic Valve Replacement After Transcatheter Aortic Valve Implantation  Louis W. Wang, MBBS, MM, Emily K. Granger, MBBS,

Late Surgical Explantation and Aortic Valve Replacement After Transcatheter Aortic Valve Implantation  Louis W. Wang, MBBS, MM, Emily K. Granger, MBBS,
Aortic coarctation reconstructed by resection and homograft replacement in the 1950s: long-term outcome 40 years after operation  Tivadar Hüttl, MD, PhD,

Aortic coarctation reconstructed by resection and homograft replacement in the 1950s: long-term outcome 40 years after operation  Tivadar Hüttl, MD, PhD,
Biomechanical implications of the congenital bicuspid aortic valve: A finite element study of aortic root function from in vivo data  Carlo A. Conti,

Biomechanical implications of the congenital bicuspid aortic valve: A finite element study of aortic root function from in vivo data  Carlo A. Conti,
Preliminary experience with the St

Preliminary experience with the St
Survival Benefit of Aortic Valve Replacement in Patients With Severe Aortic Stenosis With Low Ejection Fraction And Low Gradient With Normal Ejection.

Survival Benefit of Aortic Valve Replacement in Patients With Severe Aortic Stenosis With Low Ejection Fraction And Low Gradient With Normal Ejection.
Intraoperative Pulmonary Artery Stenting: An Alternative Technique for the Management of Pulmonary Artery Stenosis  Fotios A. Mitropoulos, MD, PhD, Hillel.

Intraoperative Pulmonary Artery Stenting: An Alternative Technique for the Management of Pulmonary Artery Stenosis  Fotios A. Mitropoulos, MD, PhD, Hillel.
Robert L. Smith, MD, Morley A. Herbert, PhD, Todd M

Robert L. Smith, MD, Morley A. Herbert, PhD, Todd M
Investigating the Causes of Adverse Events

Investigating the Causes of Adverse Events
Aortic Root Biomechanics After Sleeve and David Sparing Techniques: A Finite Element Analysis  Giordano Tasca, MD, Matteo Selmi, MS, Emiliano Votta, PhD,

Aortic Root Biomechanics After Sleeve and David Sparing Techniques: A Finite Element Analysis  Giordano Tasca, MD, Matteo Selmi, MS, Emiliano Votta, PhD,
Biomechanics of Failed Pulmonary Autografts Compared to Native Aortic Roots  Aart Mookhoek, MD, Kapil Krishnan, PhD, Sam Chitsaz, MD, PhD, Heide Kuang,

Biomechanics of Failed Pulmonary Autografts Compared to Native Aortic Roots  Aart Mookhoek, MD, Kapil Krishnan, PhD, Sam Chitsaz, MD, PhD, Heide Kuang,
Harald C. Eichstaedt, MD, Jerry Easo, MD, Tobias Härle, MD, Otto E

Harald C. Eichstaedt, MD, Jerry Easo, MD, Tobias Härle, MD, Otto E
Functional Collagen Fiber Architecture of the Pulmonary Heart Valve Cusp  Erinn M. Joyce, BS, Jun Liao, PhD, Frederick J. Schoen, MD, PhD, John E. Mayer,

Functional Collagen Fiber Architecture of the Pulmonary Heart Valve Cusp  Erinn M. Joyce, BS, Jun Liao, PhD, Frederick J. Schoen, MD, PhD, John E. Mayer,
Stent and Leaflet Stresses in 29-mm Second-Generation Balloon-Expandable Transcatheter Aortic Valve  Yue Xuan, PhD, Kapil Krishnan, PhD, Jian Ye, MD,

Stent and Leaflet Stresses in 29-mm Second-Generation Balloon-Expandable Transcatheter Aortic Valve  Yue Xuan, PhD, Kapil Krishnan, PhD, Jian Ye, MD,
A new technique for debridement in rheumatic valvular disease: the rasping procedure  Nobuo Kitamura, MD, Shinichi Uemura, MD, Ryuji Kunitomo, MD, Junichi.

A new technique for debridement in rheumatic valvular disease: the rasping procedure  Nobuo Kitamura, MD, Shinichi Uemura, MD, Ryuji Kunitomo, MD, Junichi.
CTSNet: a unique educational vehicle

CTSNet: a unique educational vehicle
Cause of degenerative disease of the trileaflet aortic valve: review of subject and presentation of a new theory  Francis Robicsek, MD, PhD, Mano J Thubrikar,

Cause of degenerative disease of the trileaflet aortic valve: review of subject and presentation of a new theory  Francis Robicsek, MD, PhD, Mano J Thubrikar,

Similar presentations

Ads by Google