Left atrial diameters in overweight children with normal blood pressure.
OBJECTIVE
To measure left atrial (LA) diameter in normotensive, overweight children and to determine the variables that independently influence LA diameters.


METHODS
A cross-sectional study on 22 overweight children (age, 13.40 +/- 1.22 years) and 18 control children (age, 13.40 +/- 2.19 years) was performed. LA diameter, left ventricular (LV) geometry, and LV systolic/diastolic function were measured through echocardiography. Data were compared between the two groups. Multiple regression analysis, with LA diameter as dependent variable, was conducted.


RESULTS
In the overweight group, LV diastolic dimension, LV mass index, peak S, S/D ratio, Am, maximal LA diameter (34.1 mm vs 25.4 mm), middle LA diameter (26.9 mm vs 18.1 mm), and minimal LA diameter (22.5 mm vs 16.1 mm) were increased and Em/Am ratio was decreased. In multiple regression analysis, body mass index (R(2) = 0.7040, 0.7085, 0.7406 in respective maximal, middle, and minimal LA diameter) and systolic blood pressure (R(2) = 0.0540, 0.0477, 0.030 in respective maximal, middle, and minimal LA diameter) were significant independent correlates of all three measures of LA diameter.


CONCLUSIONS
LA diameter in normotensive overweight children is increased. Body mass index and systolic blood pressure were significant correlates of LA diameter.
Yu
Jeong Jin
JJ
Department of Pediatrics, Konkuk University School of Medicine, Soonchunhyang University College of Medicine, Seoul, Korea. pediatrist@medimail.co.kr
Yeom
Hee Hyun
HH
Chung
Sochung
S
Park
Youngshin
Y
Lee
Dong Hwan
DH
D000293:Adolescent; D001794:Blood Pressure / Q000502:physiology; D015992:Body Mass Index; D016022:Case-Control Studies; D003430:Cross-Sectional Studies; D003971:Diastole / Q000502:physiology; D004452:Echocardiography; D005260:Female; D006325:Heart Atria / Q000000981:diagnostic imaging*; D006352:Heart Ventricles / Q000000981:diagnostic imaging; D006801:Humans; D008297:Male; D009765:Obesity / Q000503:physiopathology*; D012044:Regression Analysis; D013599:Systole / Q000502:physiology; D016277:Ventricular Function, Left / Q000502:physiology*