Key result
Normal adults differ significantly from juveniles in posterior wall excursion and velocity during contraction.
Why the study?
M-mode echocardiographic measurements of septal and left ventricular excursions and velocities in normal subjects across different age groups were not fully characterized.
Do M-mode echocardiographic measurements of septal and left ventricular excursions and velocities differ between normal adults and normal juveniles?
Comparison
Normal adults versus normal juveniles
Design
Cross-sectional study
Authors
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Age-specific M-mode norms may be needed in practice; leaves open prospective validation in pediatric cohorts.
Cross-Sectional (n=70)
Do M-mode echocardiographic measurements of septal and left ventricular excursions and velocities differ between normal adults and normal juveniles?
p-value: p=<0.002
M-mode echocardiographic measurements demonstrate significant age-related differences in specific posterior wall and septal velocities between normal juveniles and adults.
Kounis et al. (1989) conducted a cross-sectional in Healthy subjects (n=70). Adult age vs. Juvenile age was evaluated on Posterior wall excursion during isovolumetric contraction (B-Ce) and mean posterior wall velocity (PWV mean) (p=<0.002). Compared to normal juveniles, normal adults had significant differences in posterior wall excursion during isovolumetric contraction (p<0.002), mean posterior wall velocity (p<0.002), and systolic septal velocity (p=0.05).
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