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- W2215805726 abstract "<h3>Objective</h3> To determine the association of arterial partial pressure of carbon dioxide PaCO<sub>2</sub> with severe intraventricular haemorrhage (sIVH), bronchopulmonary dysplasia (BPD), and neurodevelopmental impairment (NDI) at 18–22 months in premature infants. <h3>Design</h3> Secondary exploratory data analysis of Surfactant, Positive Pressure, and Oxygenation Randomised Trial (SUPPORT). <h3>Setting</h3> Multiple referral neonatal intensive care units. <h3>Patients</h3> 1316 infants 24 0/7 to 27 6/7 weeks gestation randomised to different oxygenation (SpO<sub>2</sub> target 85–89% vs 91–95%) and ventilation strategies. <h3>Main outcome measures</h3> Blood gases from postnatal day 0 to day14 were analysed. Five PaCO<sub>2</sub> variables were defined: minimum (Min), maximum (Max), SD, average (time-weighted), and a four level categorical variable (hypercapnic (highest quartile of Max PaCO<sub>2</sub>), hypocapnic (lowest quartile of Min PaCO<sub>2</sub>), fluctuators (hypercapnia and hypocapnia), and normocapnic (middle two quartiles of Max and Min PaCO<sub>2</sub>)). PaCO<sub>2</sub> variables were compared for infants with and without sIVH, BPD and NDI (±death). Multivariable logistic regression models were developed for adjusted results. <h3>Results</h3> sIVH, BPD and NDI (±death) were associated with hypercapnic infants and fluctuators. Association of Max PaCO<sub>2</sub> and outcomes persisted after adjustment (per 10 mm Hg increase: sIVH/death: OR 1.27 (1.13 to 1.41); BPD/death: OR 1.27 (1.12 to 1.44); NDI/death: OR 1.23 (1.10 to 1.38), death: OR 1.27 (1.12 to 1.44), all p<0.001). No interaction was found between PaCO<sub>2</sub> category and SpO<sub>2</sub> treatment group for sIVH/death, NDI/death or death. Max PaCO<sub>2</sub> was positively correlated with maximum FiO<sub>2</sub> (r<sub>s</sub>0.55, p<0.0001) and ventilator days (r<sub>s</sub>0.61, p<0.0001). <h3>Conclusions</h3> Higher PaCO<sub>2</sub> was an independent predictor of sIVH/death, BPD/death and NDI/death. Further trials are needed to evaluate optimal PaCO<sub>2</sub> targets for high-risk infants." @default.
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- W2215805726 date "2014-11-25" @default.
- W2215805726 modified "2023-09-25" @default.
- W2215805726 title "PaCO<sub>2</sub>in Surfactant, Positive Pressure, and Oxygenation Randomised Trial (SUPPORT)" @default.
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- W2215805726 doi "https://doi.org/10.1136/archdischild-2014-306802" @default.
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