Right Ventricular Strain in Healthy Children: Insights from Speckle-Tracking Echocardiography

Renée S Joosen1, Eva A M Meulblok1, Esther H Mauritz-Fuite1

  • 1Department of Pediatric Cardiology, University Medical Center Utrecht, Lundlaan 6, 3584 EA Utrecht, The Netherlands.

Insights

Pediatric biventricular strain values differ by age, peaking in early childhood. Establishing age-specific normal values and Z-scores is crucial for accurate assessment of heart function in children.

Area of Science:

  • Pediatric Cardiology
  • Echocardiography
  • Cardiac Imaging

Background:

  • Right ventricular (RV) strain assessment is vital for detecting RV systolic dysfunction.
  • Existing RV strain methods show variability based on age, equipment vendor, and software.
  • Standardized pediatric values are needed for accurate interpretation.

Purpose of the Study:

  • To determine pediatric age-specific normal values for biventricular strain.
  • To develop Z-score equations for biventricular strain using GE Healthcare equipment.
  • To analyze global longitudinal strain (GLS) and RV free wall longitudinal strain (FWGLS) in children.

Main Methods:

  • Retrospective analysis of 129 children aged 0-18 years with normal cardiac structures and function.
  • Stratification into age groups: 0, 1-4, 5-9, 10-13, and 14-18 years.
  • Analysis of left ventricular (LV) GLS, RV GLS, and RV FWGLS using GE Healthcare software.

Main Results:

  • LV GLS, RV GLS, and RV FWGLS exhibited a nonlinear age-related pattern.
  • Strain values peaked in the 1-4 years age group and declined thereafter.
  • Low R-squared values limited Z-score equation reliability, necessitating age-stratified data presentation.

Conclusions:

  • Significant age-related differences exist in pediatric LV GLS, RV GLS, and RV FWGLS.
  • Age-specific normal strain values are essential for accurate clinical interpretation in children.
  • The development of age-dependent Z-score equations is recommended for precise assessment.
Abstract