Table 1. Demographic and conventional echocardiography data.

Variables	Value, mean±SD
Demographic data
Male:female	42:22
Age (year)	6.8±4.2
Body weight (kg)	27±16
Body surface area (m2)	0.9±0.4
Heart rate (beats/min)	91±17
2-dimensional echocardiography
End-diastolic LV length (L) (cm)	6.0±1.2
End-diastolic LV diameter (D) (cm)	3.2±0.7
LV geometric index: D/L	0.55±0.06
LV ejection fraction (%)	66±6
Pulse-wave Doppler
Early diastolic peak velocity (E) (m/s)	1.09±0.16
Late diastolic peak velocity (A) (m/s)	0.59±0.14
E/A ratio	1.94±0.47
MV E deceleration time (ms)	139±20
LV myocardial performance index	0.24±0.07
Tissue Doppler imaging (TDI)
MV septal annular systolic velocity (S') (m/s)	0.07±0.01
MV septal annular early diastolic velocity (E') (m/s)	0.13±0.02
MV septal annular late diastolic velocity (A') (m/s)	0.06±0.02
E'/A' ratio	2.26±0.72
LV myocardial performance index by TDI	0.42±0.08
E/E' ratio	8.58±2.18

LV: left ventricle, MV: mitral valve