Simultaneous Longitudinal Strain in All 4 Cardiac Chambers: A Novel Method for Comprehensive Functional Assessment of

Karima Addetia1, Masaaki Takeuchi2, Francesco Maffessanti2

  • 1From the Department of Medicine, Section of Cardiology, University of Chicago, IL (K.A., F.M., V.M.-A., R.M.L.); School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan (M.T., Y.N.); and Epsilon Imaging, Ann Arbor, MI (J.H.). kaddetia@medicine.bsd.uchicago.edu.

Insights

Simultaneous longitudinal strain (LS) assessment in all four heart chambers reveals distinct functional relationships. This novel echocardiography technique offers insights into cardiac chamber dynamics and potential disease evaluation.

Area of Science:

  • Cardiology
  • Echocardiography
  • Cardiac Mechanics

Background:

  • Simultaneous assessment of longitudinal strain (LS) across all four cardiac chambers using 2D speckle-tracking echocardiography (STE) remains unexplored.
  • Understanding interchamber functional relationships is crucial for comprehensive cardiac assessment.

Purpose of the Study:

  • To investigate LS curves obtained simultaneously from all four cardiac chambers in healthy individuals.
  • To gain insights into the functional interrelationships between the left atrium, left ventricle, right atrium, and right ventricle.

Main Methods:

  • Studied 259 healthy subjects using 2D STE to acquire apical 4-chamber views encompassing all four chambers.
  • Measured LS over time, including peak LS and time-to-peak strain, for all chambers within a single cardiac cycle.
  • Utilized vendor-independent software for LS analysis, incorporating septal contributions to atrial and ventricular measurements.

Main Results:

  • Right ventricular and right atrial LS curves exhibited larger magnitudes and shorter time-to-peak values compared to the left side.
  • Ventricular LS consistently peaked earlier than atrial LS within the same chamber.
  • Peak systolic LS was higher in women than men; atrial LS decreased with age, while right ventricular free-wall LS increased until the sixth decade.

Conclusions:

  • Simultaneous LS measurement provides novel insights into interchamber functional dynamics.
  • This technique serves as a valuable tool for assessing cardiac conditions affecting chambers disparately.
  • Further research can explore the clinical utility of this comprehensive LS assessment in various cardiovascular diseases.
Abstract

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