Phase plane analysis of left ventricular hemodynamics.

Published

Journal Article

We sought to extract additional physiological information from the time-dependent left ventricular (LV) pressure contour and thereby gain new insights into ventricular function. We used phase plane analysis to characterize high-fidelity pressure data in selected subjects undergoing elective cardiac catheterization. The standard hemodynamic indexes of LV systolic and diastolic function derived from the time-dependent LV pressure contour could be easily obtained using the phase plane method. Additional novel attributes of the phase plane pressure loop, such as phase plane pressure loop area, graphical representation of the isovolumic relaxation time constant, and quantitative measures of beat-to-beat systolic-diastolic coupling were characterized. The asymmetry between the pressures at which maximum isovolumic pressure rise and pressure fall occur, as well as their load dependence, were also easily quantitated. These results indicate that the phase plane method provides a novel window for physiological discovery and has theoretical and applied advantages in quantitative ventricular function characterization.

Full Text

Duke Authors

Cited Authors

  • Eucker, SA; Lisauskas, JB; Singh, J; Kovács, SJ

Published Date

  • June 2001

Published In

Volume / Issue

  • 90 / 6

Start / End Page

  • 2238 - 2244

PubMed ID

  • 11356788

Pubmed Central ID

  • 11356788

Electronic International Standard Serial Number (EISSN)

  • 1522-1601

International Standard Serial Number (ISSN)

  • 8750-7587

Digital Object Identifier (DOI)

  • 10.1152/jappl.2001.90.6.2238

Language

  • eng