Article thumbnail

Left Ventricular Rotation and Twist: Why Should We Learn?

By Satoshi Nakatani

Abstract

The left ventricle twists in systole storing potential energy and untwists (recoils) in diastole releasing the energy. Twist aids left ventricular ejection and untwist aids relaxation and ventricular filling. Therefore, rotation and torsion are important in cardiac mechanics. However, the methodology of their investigations is limited to invasive techniques or magnetic resonance imaging. With the advent of speckle tracking echocardiography, however, rotation and torsion (twist) become familiar to echocardiographers. In this review, I outline the mechanism and influencing factors of rotation and torsion with the anticipation of the routine use of these measurements in clinical practice

Topics: Review
Publisher: Korean Society of Echocardiography
OAI identifier: oai:pubmedcentral.nih.gov:3079077
Provided by: PubMed Central

To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.

Suggested articles

Citations

  1. Age-related changes in left ventricular twist assessed by two-dimensional speckle-tracking imaging.
  2. Angular displacement of the papillary muscles during the cardiac cycle.
  3. Assessment of left ventricular torsional deformation by Doppler tissue imaging: validation study with tagged magnetic resonance imaging.
  4. Basic science review: the helix and the heart.
  5. Cate FJ, Geleijnse ML. Influence of cardiac shape on left ventricular twist.
  6. Contribution of the pericardium to left ventricular torsion and regional myocardial function in patients with total absence of the left pericardium.
  7. (1996). Dynamic three-dimensional imaging of the mitral valve and left ventricle by rapid sonomicrometry array localization.
  8. (1999). Independent effects of preload, afterload, and contractility on left ventricular torsion.
  9. Left ventricular torsion by two-dimensional speckle tracking echocardiography in patients with diastolic dysfunction and normal ejection fraction.
  10. Left ventricular torsion is equal in mice and humans.
  11. Left ventricular untwisting rate by speckle tracking echocardiography.
  12. Maturational and adaptive modulation of left ventricular torsional biomechanics: Doppler tissue imaging observation from infancy to adulthood.
  13. Measurement of ventricular torsion by two-dimensional ultrasound speckle tracking imaging.
  14. MRI assessment of LV relaxation by untwisting rate: a new isovolumic phase measure of τ.
  15. (1990). Noninvasive quantification of left ventricular rotational deformation in normal humans using magnetic resonance imaging myocardial tagging. Circulation
  16. Preserved left ventricular twist and circumferential deformation, but depressed longitudinal and radial deformation in patients with diastolic heart failure.
  17. Role of pericardium in the maintenance of left ventricular twist.
  18. (1994). Rotational deformation of the canine left ventricle measured by magnetic resonance tagging: effects of catecholamines, ischaemia, and pacing. Cardiovasc Res
  19. (1994). Three-dimensional left ventricular deformation in hypertrophic cardiomyopathy.
  20. Torsional deformation of the left ventricular midwall in human hearts with intramyocardial markers: regional heterogeneity and sensitivity to the inotropic effects of abrupt rate changes.
  21. Trends in prevalence and outcome of heart failure with preserved ejection fraction.
  22. Twist mechanics of the left ventricle: principles and application.
  23. Ventricular untwisting: a temporal link between left ventricular relaxation and suction.