Effect of anterior strut chordal transection on the force distribution on the marginal chordae of the mitral valve.

ABSTRACT:

Objectives

Transection of the secondary chordae on the anterior leaflet of the mitral valve to relieve leaflet tethering and reduce regurgitation is an experimentally proven procedure to correct functional mitral regurgitation. In the present study, we sought to investigate whether transecting the secondary chordae would have an effect on the marginal chordal force on the same leaflet.

Methods

Adult porcine mitral valves (n = 8) were studied in a pulsatile heart simulator, in which the papillary muscle positions can be precisely positioned. Miniature transducers were inserted into the anterior marginal chordae to measure the chordal forces. Each valve was studied under baseline conditions, 3 different tethering conditions (apical, apical-lateral, and apical-lateral-posterior

SUBMITTER: Padala M 

PROVIDER: S-EPMC3307892 | biostudies-literature | 2012 Sep

REPOSITORIES: biostudies-literature