The Effect of Trabeculae Carneae on Left Ventricular Diastolic Compliance: Improvement in compliance with trabecular cutting

David L. Halaney, Arnav Sanyal, Navid A. Nafissi, Daniel Escobedo, Martin Goros, Joel Michalek, Pedro J. Acevedo, William Perez, G. Patricia Escobar, Marc D. Feldman, Hai Chao Han

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

The role of trabeculae carneae in modulating left ventricular (LV) diastolic compliance remains unclear. The objective of this study was to determine the contribution of trabeculae carneae to the LV diastolic compliance. LV pressure-volume compliance curves were measured in six human heart explants from patients with LV hypertrophy at baseline and following trabecular cutting. The effect of trabecular cutting was also analyzed with finite-element model (FEM) simulations. Our results demonstrated that LV compliance improved after trabecular cutting (p<0.001). Finite-element simulations further demonstrated that stiffer trabeculae reduce LV compliance further, and that the presence of trabeculae reduced the wall stress in the apex. In conclusion, we demonstrate that integrity of the LV and trabeculae is important to maintain LV stiffness and loss in trabeculae leads to more LV compliance.

Original languageEnglish (US)
Article number031012
JournalJournal of Biomechanical Engineering
Volume139
Issue number3
DOIs
StatePublished - Mar 1 2017

Keywords

  • Hypertrophy
  • LV compliance
  • Stiffness
  • Surgery
  • Trabeculae Carneae
  • Wall stress

ASJC Scopus subject areas

  • Biomedical Engineering
  • Physiology (medical)

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