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• W2904635090 abstract "While carbon monoxide (CO) is considered toxic, low levels of endogenously produced CO are protective against cellular injury induced by oxidative stress. Carboxyhaemoglobin (COHb) levels have been associated with outcomes in critically ill adults. We aimed to describe the distribution of carboxyhaemoglobin in critically ill children and the relationship of these levels with clinical outcomes. This retrospective observational study was conducted at a large tertiary paediatric intensive care unit (PICU). We included all children admitted to the PICU over a two-year period who underwent arterial blood gas analysis. We measured the following: Population and age-related differences in COHb distribution; (ii) Change in COHb over the first week of admission using a multi-level linear regression analysis; (ii) Uni- and multivariable relationships between COHb and length of ventilation and PICU survival. Arterial COHb levels were available for 559/2029 admissions. The median COHb level was 1.20% (IQR 1.00-1.60%). Younger children had significantly higher COHb levels (p-value <2 x 10-16). Maximum Carboxyhaemoglobin was associated with survival 1.67 (95% CI 1.01-2.57, p-value=0.02) and length of ventilation (odds ratio 5.20, 95% CI 3.07-7.30, p-value 1.8 x 10-6) following multi-variable analysis. First measured and minimum COHb values were weakly associated with length of ventilation, but not survival. In conclusion, children have increased COHb levels in critical illness, which are greater in younger children. Higher COHb levels are associated with longer length of ventilation and death in PICU. This is likely to reflect increased oxidative stress." @default.
• W2904635090 created "2018-12-22" @default.
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• W2904635090 date "2018-12-07" @default.
• W2904635090 modified "2023-10-14" @default.
• W2904635090 title "Arterial carboxyhaemoglobin levels in children admitted to PICU: a retrospective observational study" @default.
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• W2904635090 doi "https://doi.org/10.1101/490334" @default.
• W2904635090 hasPublicationYear "2018" @default.
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