Graft Stenosis Assessment
Graft Stenosis Assessment - Related Videos
12:39
Implantation of Inferior Vena Cava Interposition Graft in Mouse Model
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To improve our knowledge of cellular and molecular neotissue formation, a murine model of the TEVG was recently developed. The grafts were implanted as infrarenal vena cava interposition grafts in C57BL/6 mice. This model achieves similar results to those achieved in our clinical investigation, but over a far shortened time-course.
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Surgical Management of Meatal Stenosis with Meatoplasty
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Meatoplasty, surgical management of meatal stenosis.
09:29
Technique of Subnormothermic Ex Vivo Liver Perfusion for the Storage, Assessment, and Repair of Marginal Liver Grafts
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Marginal grafts, such as fatty livers, grafts from older donors, or livers retrieved after cardiac death (DCD) tolerate conventional, cold static storage only poorly. We developed a novel model of subnormothermic ex vivo liver perfusion for preservation, assessment, and repair of marginal liver grafts prior to transplantation.
05:00
Using a Chemical Biopsy for Graft Quality Assessment
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Cited by 10 •
2020
The protocol presents utilization of the chemical biopsy approach followed by comprehensive metabolomic and lipidomic analysis for quality assessment of kidney grafts allocated for transplantation.
02:02
Full-Endoscopic Interlaminar Approach for Decompression of Lateral Recess Stenosis
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Cited by 1 •
2023
Technical advances and increased experience in full-endoscopic spinal surgeries enable these procedures to be performed with minimal incision, muscle retraction, and bone removal.
FAQs
A reduced lumen can alter the way blood moves through the conduit, producing disturbed flow and increasing resistance across the graft. These changes matter because a graft may retain an apparently continuous pathway while its transport performance deteriorates. Assessing geometry together with flow behavior therefore reveals functional consequences that diameter measurements alone may not capture.
Lumen geometry shows where the conduit has become narrower, whereas hemodynamic measurements indicate how that narrowing affects flow and resistance. Using both perspectives connects a structural change with its functional effect. This combined interpretation is especially useful when comparing graft designs, because materials or fabrication methods may influence performance beyond the measured shape alone.
Material selection, fabrication method, and mechanical properties can affect whether a graft maintains suitable performance under physiological conditions. Graft stenosis assessment provides data for examining those relationships by linking observed lumen geometry and blood-flow behavior with the engineered characteristics of the conduit. The results can guide refinement toward designs intended to preserve stable flow and reduce failure risk.
Imaging methods provide information about the graft lumen, including geometric narrowing, while hemodynamic methods characterize blood-flow behavior and resistance across the conduit. Their roles are complementary rather than interchangeable. Combining the measurements helps determine whether a structural change is associated with disturbed transport, supporting a more complete evaluation of graft function under physiological conditions.
The evaluation begins by obtaining measurements of lumen geometry and blood-flow behavior within or across the graft. Those data are then considered together to identify reduced diameter, disturbed flow, and resistance changes. The resulting assessment can support graft surveillance or provide a basis for comparing performance among grafts with different designs, materials, or fabrication methods.
Bioengineers can use this assessment when studying surgically implanted or tissue-engineered grafts and when evaluating how design choices affect patency. It supports surveillance of graft performance, comparison of alternative materials or fabrication approaches, and refinement of conduits intended to maintain stable flow. The resulting evidence connects engineered properties with behavior under physiological conditions.