Carboxyhemoglobin Formation in Preterm Infants Is Related to the Subsequent Development of Bronchopulmonary Dysplasia

Figure 2

Blood carboxyhemoglobin levels (CO-Hb) but not total bilirubin and hematocrit levels during the early postnatal period correlated with the subsequent development of BPD. The blood levels of CO-Hb (a), bilirubin (b), and hematocrit (c) were compared between the no-or-mild BPD group (open bars) and the moderate-to-severe BPD group (closed bars) on the postnatal days indicated. < 0.05 and < 0.01 for the no-or-mild BPD group versus the moderate-to-severe BPD group on the postnatal days indicated. < 0.05 and < 0.01 comparison with postnatal days 5–8 of the same group.

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(b)

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