The role of atrial contraction in mitral valve closure.

  title={The role of atrial contraction in mitral valve closure.},
  author={Tomasz A. Timek and Paul Dagum and David T. Lai and G Randall Green and Julie R Glasson and George T. Daughters and Neil B. Ingels and D. C. Miller},
  journal={The Journal of heart valve disease},
  volume={10 3},
BACKGROUND AND AIM OF THE STUDY Ovine mitral valve closure is associated with presystolic mitral annular reduction coincident with atrial contraction, which is abolished with ventricular pacing. Whether lack of properly timed atrial contraction influences mitral valve closure or competence, however, is not known. METHODS Eight sheep underwent myocardial marker implantation on the left ventricle, mitral annulus (MA), and mitral leaflets. After 7-10 days, the animals were studied with biplane… CONTINUE READING


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