**3.1 Patients profiles (Table 1)**

There was no significant difference among the groups on age. Heart rates (HR) and left ventricular systolic pressure (LVSP) were similar among groups, so the double products (LVSP x HR) of the left ventricle in PH group was same to those in ASD group. The ratio of the right ventricular systolic pressure (RVSP) to the LVSP was higher in PH group than in ASD group (0.35 ± 0.13 mmHg vs 0.79 ± 0.17 mmHg ) . Qp/Qs of 1.7 ± 0.5 in PH group was also the same level in comparison with that of 1.8 ± 0.2 in ASD group.

#### **3.2 Oxygen uptake**

The arterial-coronary vein oxygen concentration differences were similar among three groups; 11.1 ± 0.7 Vol% for KD, 11.1 ± 2.3 Vol% for ASD group, and 10.9 ± 0.9 for PH group. However, this does not mean that the myocardial oxygen consumption of each group was similar, because we could not measure coronary flow in each group. Among three groups, however, the similar LV double products value may suggest the same levels of the LV oxygen consumption. On the other hand, the RV double products of the PH group were the highest level. These results suggested that the myocardial oxygen consumption in PH group may be the highest level among the groups.
