Aortic Root Enlargement
Aortic Root Enlargement - Related Videos
12:17
Full-root Aortic Valve Replacement by Stentless Aortic Xenografts in Patients with Small Aortic Roots
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Cited by 4 •
2017
Full-root aortic valve replacement by stentless aortic xenograft is a viable option in patients with small aortic roots. We describe, a technique for the full-root implantation of stentless aortic xenografts, with emphasis on the management of the proximal suture line and coronary anastomoses, and discuss its limitations and alternative options.
01:22
Enlargement of the Plasma Membrane
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2023
Cell division and enlargement are processes that require precise control. The control ensures that cell division cannot proceed unless the cell has grown to a specific size. A spherical, dividing cell requires an approximately 1.6X increase in its surface area to double its volume. The secretory pathway also has a significant role in cell membrane enlargement. Secretory vesicles that bud off from the Golgi apparatus and later fuse with the plasma membrane during exocytosis are a major source of...
14:14
Standardized Technique of Aortic Valve Re-implantation for Valve-sparing Aortic Root Replacement
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2017
Valve-sparing aortic root replacement has the advantage of preserving the patient's own aortic valve. The complexity of the reported techniques to date restricts their use to a limited number of cardiac surgeons. This protocol describes step-by-step a standardized technique reproducible by a greater number of cardiac surgeons.
09:12
Aortic Ring Assay
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Cited by 42 •
2009
Angiogenesis, the sprouting of blood vessels from pre-existing vasculature, is associated with both natural and pathological processes. Here we demonstrate an aortic ring assay that allows angiogenic potentiators and inhibitors to be directly added to aortic rings in culture. Sprouting and neovessel outgrowth can be determined by inspecting the aortic rings over a period of 6-12 days.
02:37
Surgical Aortic Debanding: A Procedure to Study Left Ventricular Reverse Remodeling in Murine Model of Aortic Constriction
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2025
This video demonstrates the technique of aortic debanding, which can lead to reverse remodeling to limit the progression towards heart failure in a murine model. Post debanding, a significant reduction of ventricular afterload triggers regression of ventricular hypertrophy and fibrosis, causing a recovery in cardiac function.
FAQs
By enlarging the available valve outflow passage, the procedure allows implantation of a prosthetic valve with a size better suited to the patient’s body size. This is important because a prosthesis that is relatively small can create prosthesis-patient mismatch, limiting blood flow despite valve replacement. Enlargement therefore targets the relationship between prosthesis size and patient size.
The annulus provides the ring around the valve opening, while adjacent aortic-root tissue contributes to the surrounding structural pathway. Extending the incision through the annulus or nearby root tissue increases the dimensions available for reconstruction. Addressing these connected structures, rather than focusing only on the prosthetic valve, creates room for a larger valve while preserving structural support.
Patch reconstruction is important because enlargement must increase the passage without abandoning support for the aortic-root region. After the incision is extended, the enlarged area is rebuilt with a patch. This combines two goals of the operation: expanding the available outflow route and maintaining the reconstructed root’s structural support during valve replacement.
The incision may be extended through the aortic annulus itself or through nearby aortic-root tissue, depending on the operative reconstruction. These are the key anatomical routes described for creating additional space. Once the area is enlarged, a patch reconstructs it, producing a wider valve outflow passage for prosthetic valve placement.
It becomes relevant when the native aortic opening is too small to accommodate a prosthetic valve appropriate for the patient’s body size. In that setting, implanting a relatively small valve may produce prosthesis-patient mismatch and limit blood flow. The enlargement procedure is therefore considered as part of planning for valve replacement when valve size is a concern.
By making room for a larger prosthetic valve, the operation can reduce the likelihood that the replacement will be undersized relative to the patient. The intended relevance is hemodynamic: a better-matched prosthesis may avoid the flow limitation associated with mismatch. This makes root enlargement important when valve replacement must account for body size.
Aortic root enlargement informs planning because it changes the anatomical space available for prosthetic valve implantation. Surgeons can therefore incorporate annular and root dimensions into a broader valve-replacement strategy rather than treating valve selection as an isolated decision. Its role is especially relevant when a small native opening could constrain prosthesis size and affect outflow.