Figure legends
Figure 1. Time percentage on backup ventilation and neural respiratory rate (nRR) according to postmenstrual age during invasive and noninvasive neurally adjusted ventilatory assist (NAVA).
Spearman test was used for the analyses. For invasive NAVA, each PMA group included 17, 22, 52, 60, 66, 43 and 9 infants. For noninvasive NAVA, each PMA group included 9, 8, 9, 35 and 24 infants. Box plots show median (IQR), minimum and maximum values.
Figure 2. Relative ratio of time on backup ventilation compared to the baseline of 24 hours before the episode (-24hours).
Values are medians (IQRs) of the previous 6 hours. Grey lines indicate individual changes. Values at each time point are 1.3 (0.8 – 2.0), 1.7 (1.2 – 3.1), 2.0 (1.3 – 4.6) and 3.4 (2.3 – 6.4), respectively. Friedman test’s χ2 was 20.69 (p<0.001).