Key result
High-pressure balloon fracturing of small bioprosthetic heart valves required 8-10 atm for polymer frames and 19-26 atm for metal stents, with no elements protruding post-fracture.
Why the study?
What are the fracture pressures and mechanics of small-sized bioprosthetic heart valves when subjected to high-pressure balloon dilatation?
What are the fracture pressures and mechanics of small-sized bioprosthetic heart valves when subjected to high-pressure balloon dilatation?
Bioprosthetic heart valve frames can be safely fractured using high-pressure balloons, with polymer frames requiring lower pressures (8-10 atm) than metal stents (19-26 atm), facilitating future valve-in-valve procedures.
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May enable VIV in small BHV via high-pressure frame fracture; leaves open prospective validation of safety and durability.
Johansen et al. (2017) studied Degraded bioprosthetic heart valves. High-pressure balloon fracturing was evaluated on Fracture pressure and mechanics. High-pressure balloon fracturing of small bioprosthetic heart valves required 8-10 atm for polymer frames and 19-26 atm for metal stents, with no elements protruding post-fracture.
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