Tape Spin Hoods

Siseruumide rippkaablid sagedusel 5 MHz kuni 3 MHz talitlevatele süsteemidele 8. Osa 4—1: Varjestatud, sagedusega kuni MHz iseloomustatavate kaablite liigitus. Published by Elsevier Inc. Ostu-märkused : 1. Välispaigaldiste rippkaablid sagedusel 5 MHz kuni 1 MHz talitlevatele süsteemidele 8.

We evaluated the feasibility of bioprosthetic valve fracture with a high-pressure balloon to facilitate valve-in-valve transcatheter aortic valve replacement. Bard, Murray Hill, NJ were used to determine which valves could be Tape Spin Hoods and at what pressure fracture occurred.

Mitroflow, Magna, Magna Ease, Mosaic, and Biocor Epic surgical valves were successfully fractured using high-pressures balloon 1 mm larger than the labeled valve size whereas Trifecta and Hancock II surgical valves could not be fractured.

Only the internal valve frame was fractured, and the sewing cuff was never disrupted.

Manufacturer's rated burst pressures for balloons were exceeded, with fracture pressures ranging from 8 to 24 atmospheres depending on the surgical valve. Testing further demonstrated that fracture facilitated the expansion of previously constrained, underexpanded transcatheter valves both balloon and self-expanding to the manufacturer's recommended size.

Bench testing demonstrates that the frame of most, but not all, bioprosthetic surgical aortic valves can be fractured using high-pressure balloons.

The safety of bioprosthetic valve fracture to optimize valve-in-valve transcatheter aortic valve replacement in small surgical valves requires further clinical investigation.

Copyright © The Society of Thoracic Surgeons.

Published by Elsevier Inc. All rights reserved.