Key result
Measurement of segment shortening defined a sequence of contraction starting at the right ventricular free wall and left antero-septal endocardium, with a mean shortening fraction of 18+/-3%.
The study demonstrates that the sequence of myocardial contraction follows a rope-like band model, suggesting active suction during the 'isovolumetric relaxation' phase.
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Does not support clinical translation; extends rope-like band model in animals but leaves human relevance open.
Castellà et al. (2005) studied Myocardial contraction (n=24). Measurement of segment shortening using sonomicrometer crystals was evaluated on Sequence of contraction and segment shortening fraction. Measurement of segment shortening defined a sequence of contraction starting at the right ventricular free wall and left antero-septal endocardium, with a mean shortening fraction of 18+/-3%.
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