Why the study?
What are the normal reference values for longitudinal systolic strain and strain rate in a healthy population?
Population
1266 healthy individuals from the HUNT study in Norway
Comparison
Echocardiography assessing longitudinal strain… vs Comparison of four methods of assessing…
Design
Cross-sectional
Key result
Echocardiographic assessment of 1266 healthy individuals established mean global longitudinal strain and strain rate reference values of -17.4% and -1.05 s(-1) in women, and -15.9% and -1.01 s(-1) in men.
Authors
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Provides sex-specific GLS and strain rate references from a large healthy cohort; extends normative data but requires prospective validation before routine use.
Cross-Sectional (n=1,266)
What are the normal reference values for longitudinal systolic strain and strain rate in a healthy population?
The study establishes age- and sex-specific reference values for global and segmental longitudinal strain and strain rate using echocardiography in a large healthy population.
Dalen et al. (2009) conducted a cross-sectional in Healthy individuals (n=1,266). Echocardiography (speckle tracking and tissue Doppler imaging) vs. Four methods of assessing myocardial deformation (in a subset) was evaluated on Distribution of longitudinal systolic strain and strain rate. Echocardiographic assessment of 1266 healthy individuals established mean global longitudinal strain and strain rate reference values of -17.4% and -1.05 s(-1) in women, and -15.9% and -1.01 s(-1) in men.