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Low Apgar score, neonatal encephalopathy and epidural analgesia during labour: a Swedish registry-based study
Umeå University, Faculty of Medicine, Department of Surgical and Perioperative Sciences, Anaesthesiology.
Umeå University, Faculty of Medicine, Department of Surgical and Perioperative Sciences, Anaesthesiology.
Umeå University, Faculty of Medicine, Department of Clinical Sciences, Paediatrics.
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2015 (English)In: Acta Anaesthesiologica Scandinavica, ISSN 0001-5172, E-ISSN 1399-6576, Vol. 59, no 4, 486-495 p.Article in journal (Refereed) Published
Abstract [en]

BACKGROUND: Maternal intrapartum fever (MF) is associated with neonatal sequelae, and women in labour who receive epidural analgesia (EA) are more likely to develop hyperthermia. The aims of this study were to investigate if EA and/or a diagnosis of MF were associated to adverse neonatal outcomes at a population level. METHODS: Population-based register study with data from the Swedish Birth Register and the Swedish National Patient Register, including all nulliparae (n = 294,329) with singleton pregnancies who gave birth at term in Sweden 1999-2008. Neonatal outcomes analysed were Apgar score (AS) < 7 at 5 min and ICD-10 diagnosis of neonatal encephalopathy (e.g. convulsions or neonatal cerebral ischaemia). Multivariate logistic regression was used to calculate adjusted odds ratios (AOR) with 95% confidence intervals (CI). RESULTS: EA was used in 44% of the deliveries. Low AS or encephalopathy was found in 1.26% and 0.39% of the children in the EA group compared with 0.80% and 0.29% in the control group. In multivariate analysis, EA was associated with increased risk with low AS, AOR 1.27 (95% CI 1.16-1.39), but not with diagnosis of encephalopathy, 1.11 (0.96-1.29). A diagnosis of MF was associated with increased risk for both low AS, 2.27 (1.71-3.02), and of neonatal encephalopathy, 1.97 (1.19-3.26). CONCLUSION: Diagnosis of MF was associated with low AS and neonatal encephalopathy, whereas EA was only associated with low AS and not with neonatal encephalopathy. The found associations might be a result of confounding by indication, which is difficult to assess in a registry-based population study.

Place, publisher, year, edition, pages
2015. Vol. 59, no 4, 486-495 p.
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Anesthesiology and Intensive Care Pediatrics
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URN: urn:nbn:se:umu:diva-100264DOI: 10.1111/aas.12477ISI: 000351537900010ISBN: 1399-6576 (Electronic) 0001-5172 (Linking) (print)OAI: oai:DiVA.org:umu-100264DiVA: diva2:791216
Available from: 2015-02-27 Created: 2015-02-27 Last updated: 2017-12-04Bibliographically approved

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Törnell, SivHultin, MagnusHåkansson, StellanThunberg, Johan
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