Fig. 2

Distribution of the duration of ICU and general ward lengths of stays following the left coronary procedure in the entire cohort, in patients with and without cardiac dysfunction (LVEF ≤50%) and in patients younger and older than 12 months. Two patients with LVEF ≤50% and age ≤ 12 months died in the ICU and were never transferred to the general ward; thus, neither were included in the analyses. The upper panel depicts the scatter distributions among all individuals regarding the length of ICU and ward stays, whereas the lower panel depicts the median (interquartile) days in the ICU and in the ward in each group. The ICU [6.5 days (3.0, 16.5), 2.0 days (1.0, 4.0), P < 0.001] and ward [7.0 days (6.0, 9.8), 6.0 days (5.0, 7.0), P = 0.023] lengths of stays were significantly prolonged in cohorts with cardiac dysfunction compared with those without cardiac dysfunction. Similarly, compared with older children, both the ICU [7.0 days (3.0, 19.0), 2.0 days (1.0, 4.0), P < 0.001] and general ward lengths of stays [7.0 days (6.0, 10.0), 6.0 days (5.0, 7.0), P = 0.006] were also significantly longer in patients under 12 months old. ICU, intensive care unit; LVEF, left ventricular ejection fraction