Optimized mitral annuloplasty ring design reduces loading in the posterior annulus.

ABSTRACT:

Objective

The study objective was to develop a novel annuloplasty ring with regional flexibility and assess its suture force dynamics in healthy ovine subjects compared with fully rigid or fully flexible rings.

Methods

Materially heterogeneous rings were created with rigid anterior and posterior, and flexible commissural segments. These rings were created to match the geometry of the Profile 3D ring (Medtronic, Minneapolis, Minn). Each ring was instrumented with 10 force transducers to measure cyclic suture forces (F_C) and undersized annuloplasty was performed in 6 healthy ovine subjects. Each F_C was recorded and examined for cardiac cycles reaching a maximum left ventricular pressure of 100, 125, and 150 mm Hg. F_C was compared with previousl

SUBMITTER: Ncho BE 

PROVIDER: S-EPMC6885108 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature