British journal of anaesthesia
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The objective of cardiopulmonary bypass (CPB) is to maintain an adequate balance between oxygen delivery (Ḋo2) and consumption. The critical Ḋo2 is that at which consumption becomes supply dependent. This study aimed to identify the critical Ḋo2 in neonates, who have higher metabolic rates than adults. ⋯ It was found that 340 ml min-1 m-2 is likely to represent the lowest suitable Ḋo2 required in neonates to maintain aerobic metabolism during normothermic CPB.
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Failure to discharge home after day-case procedures has a negative impact on patients, families, and hospital finances. There are currently no national paediatric data on the incidence and causes of unplanned admission. We determined the incidence of unplanned admissions after paediatric day-case anaesthesia, and identified risk factors leading to unplanned admission. ⋯ Paediatric patient physical status, some types of surgery and duration of procedure were associated with unplanned day-surgery admissions. Unexpected surgical complexity and patient discomfort in recovery were common factors.