Journal of the American Society of Echocardiography
Original ArticlesLeft ventricular wall motion velocities in healthy children measured by pulsed wave Doppler tissue echocardiography: Normal values and relation to age and heart rate*,**
Section snippets
Study population
The study group consisted of 131 healthy children (69 boys and 62 girls). All subjects were volunteers with no history of heart disease. Their ages ranged between 2 months and 19 years (mean age 7.5 ± 5.5 years). None of the subjects had clinical or echocardiographic evidence of structural or functional heart disease. Parents of the subjects received an explanation of the study and gave informed consent.
Echocardiographic study
The echocardiographic examination was performed with the subject in the left lateral
Velocities in 4 walls
Mean peak velocities for all 4 ventricular walls are summarized in Table 1.Segment Mean ± SD Range n SHORT-AXIS VIEW Interventricular septum Sw (cm/s) 4.5 ± 1.1 2.0-7.7 131 Ew (cm/s) 7.0 ± 1.8 3.1-12.9 127 Aw* (cm/s) — — — Aw/Ew* — — — Left ventricular posterior wall S1w (cm/s) 5.1 ± 1.3 2.7-9.0 131 S2w (cm/s) 5.1 ± 1.1 2.9-8.1 131 Ew (cm/s) 13.6 ± 3.5 7.2-22.2 131 Aw (cm/s) 3.7 ± 1.1 2.1-7.0 127 Aw/Ew 0.29 ± 0.12 0.11-0.75 127 FOUR-CHAMBER VIEW Interventricular septum
Heterogeneity of wall motion velocities between the interventricular septum and the lateral (or posterior) wall
In healthy children, the fundamental components (Sw or S1w and S2w; Ew; and Aw) of left ventricular wall motion velocity based on PWDT are similar to the values in the adult population.1, 2, 3
It is well known that heterogeneity of PWDT patterns exists between different segments of the left ventricular walls.3, 10 On the basis of longitudinal wall motion analysis in the apical view, Galiuto et al 10 reported that myocardial velocity was lower in the septum, with a significant basal-to-apical
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Cited by (0)
- *
Reprint requests: Kazuhiro Mori, MD, Department of Pediatrics, School of Medicine, University of Tokushima, 3-18-15 Kuramotocho, Tokushima-city, Tokushima, 770-8503, Japan.
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J Am Soc Echocardiogr 2000;13:1002-11.