Key result
Ventricular torsion provides important information on the rate of LV pressure decay during isovolumic relaxation and unique information about the transmural gradient of contractile performance.
Ventricular torsion assessment provides unique insights into the transmural gradient of contractile performance and the rate of LV pressure decay.
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Requires prospective validation before clinical use; extends mechanistic insights into LV relaxation and transmural function.
New non-invasive imaging techniques allow quantification of torsion of the left ventricle (LV). Presently, it is not well know what torsion can add as an indicator of left ventricular pump function. A frame work for understanding of cardiac motion has been designed that is based on general principles of mechanics. In this frame work experimental and clinical findings on torsion were related to various indices of LV function. The time courses of torsion and volume have much information in common. However, the rate of torsion during isovolumic relaxation provides important information on rate of LV pressure decay. Most importantly, assessment of the relation between torsion and the changing inner diameter during ejection renders unique information about the transmural gradient of contractile performance of the LV myocardium.
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Arts et al. (2009) conducted a review in Left ventricular pump function. Ventricular torsion was evaluated. Ventricular torsion provides important information on the rate of LV pressure decay during isovolumic relaxation and unique information about the transmural gradient of contractile performance.
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