Comparing hydrodynamic performance in full-root and graft-inclusion Ross technique: An ex vivo study
Nina Sophie Pommert, Thomas Puehler, Leonie Umminger, Buntaro Fujita, Igor Berezovets, Michael Scharfschwerdt, Mustafa Almanasef, Iliazbek Kazakbaev, Felix Hausbeck, Ioana Geisler, Barbara Linz, Stephanie Sellers, David Meier, Georg Lutter, Anas Aboud, Stephan Ensminger · 2026
Read Comparing hydrodynamic performance in full-root and graft-inclusion Ross technique: An ex vivo study by Nina Sophie Pommert, Thomas Puehler, Leonie Umminger, Buntaro Fujita, Igor Berezovets, Michael Scharfschwerdt, Mustafa Almanasef, Iliazbek Kazakbaev, Felix Hausbeck, Ioana Geisler, Barbara Linz, Stephanie Sellers, David Meier, Georg Lutter, Anas Aboud, Stephan Ensminger (2026) in the Tower of Babel, a free online library of public-domain works preserved in clean, searchable text. No sign-up. The full text is served as a plain-text file at a predictable URL, where text is present: https://antarctic-labs.com/tower-of-babel/pmc-13477091.txt.
Description
Pommert and co-authors compared two ways of performing the Ross operation in 2026, a procedure that moves a young patient's own lung valve into the aortic position. They built 20 pig valve reconstructions on a lab circulation rig, ten using the full-root method and ten wrapping the valve inside a fabric graft. The rig measured pressure drops, open area, and leakage at rest and under exercise-like flow.
Full-root valves flowed better, with a mean pressure gradient of 3.6 millimeters of mercury against 5.0 millimeters of mercury for the graft-wrapped valves. Their effective opening was also larger, at 2.4 square centimeters against 2.0 square centimeters for the wrapped valves, and total leakage matched. The graft method did close with less backward volume, 4.8 milliliters per beat against 7.9 milliliters per beat for the full-root valves. That may protect the new root from stretching, so the authors weigh flow gains against this durability hint.
Catalog record
| CREATOR | Nina Sophie Pommert, Thomas Puehler, Leonie Umminger, Buntaro Fujita, Igor Berezovets, Michael Scharfschwerdt, Mustafa Almanasef, Iliazbek Kazakbaev, Felix Hausbeck, Ioana Geisler, Barbara Linz, Stephanie Sellers, David Meier, Georg Lutter, Anas Aboud, Stephan Ensminger |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 31 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |