Key result
Chord-sparing mitral valve replacement showed a trend toward increased contractility (P=0.061) and faster relaxation compared to chord-severing techniques in a canine model.
Why the study?
Does chord-sparing mitral valve replacement improve left ventricular function and torsional deformation compared to chord-severing in a canine model?
RCT (n=14)
Does chord-sparing mitral valve replacement improve left ventricular function and torsional deformation compared to chord-severing in a canine model?
p-value: p=0.061
Preservation of the mitral subvalvular apparatus during MVR maintains the normal relationship between LV systolic function and torsional deformation, suggesting it acts as a modulator of LV pump performance.
No takes yet. Share an insight, caveat, or question.
Should not alter mitral replacement practice; leaves open translation of subvalvular preservation benefits to humans.
DeAnda et al. (1995) conducted an RCT in Mitral valve replacement (n=14). Chord-sparing mitral valve replacement (MVR-Intact) vs. Chord-severing mitral valve replacement (MVR-Cut) was evaluated on Left ventricular systolic function (Ees) and early LV diastolic filling (tau) (p=0.061). Chord-sparing mitral valve replacement showed a trend toward increased contractility (P=0.061) and faster relaxation compared to chord-severing techniques in a canine model.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: