Figure 2
From: Inhaled nitric oxide therapy in acute bronchiolitis: A multicenter randomized clinical trial
Methemoglobin and nitrogen dioxide levels. Pooled MetHb (panel A) and inspired NO2 (panel B) data from the start and end of all treatments (343 total inhalations) are shown in Box-Whisker plots. The dotted lines indicate the study safety threshold limits of 7% for MetHb and 5 ppm for NO2. Box-Whisker plot: boxes display 25th to 75th percentile, middle line represents the median, and whiskers extend to minimum and maximum values. (Panel C) shows mean ± SD of daily MetHb levels at baseline, start (pre-) and end (post-) of each NO inhalation, and at discharge.
