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Fetal monitoring with computerized ST analysis during labor: a systematic review and meta-analysis
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2013 (English)In: Acta Obstetricia et Gynecologica Scandinavica, ISSN 0001-6349, E-ISSN 1600-0412, Vol. 92, no 1, p. 28-39Article, review/survey (Refereed) Published
Abstract [en]

Background. Computerized ST analysis of fetal electrocardiography (ECG) combined with cardiotochography (CTG) has been introduced for intrapartum monitoring and is the prevailing method when ST analysis (STAN®) is used. Objective. To assess the evidence that computerized ST analysis during labor reduces the incidence of fetal metabolic acidosis, hypoxic ischemic encephalopathy, cesarean section, instrumental vaginal delivery or the number of instances where fetal scalp blood sampling is used as compared with CTG only. Methods. Search of PubMed, Cochrane Library, EMBASE, Web of Science, CINAHL and CRD databases. Selection criteria. CTG only compared with CTG + computerized ST analysis. Data collection and analysis. Studies were assessed using pre-designed templates. Meta-analyses of included randomized controlled trials were performed using a random effects model. Results. Risk ratio for cord metabolic acidosis with STAN® was 0.96 [95% confidence interval (CI) 0.49-1.88]. Risk ratio for cesarean sections or instrumental vaginal deliveries for fetal distress was 0.93 (95%CI 0.80-1.08) and for fetal scalp blood sampling 0.55 (95%CI 0.40-0.76). Encephalopathy cases were not assessed due to their low incidence. Conclusions. There is not enough scientific evidence to conclude that computerized ST analysis reduces the incidence of metabolic acidosis. Cesarean sections and instrumental vaginal deliveries due to fetal distress or other indications are the same, regardless of method, but STAN® reduces the number of instances which require scalp blood sampling.

Place, publisher, year, edition, pages
Hoboken, USA: Wiley-Blackwell, 2013. Vol. 92, no 1, p. 28-39
Keywords [en]
Cardiotochography, fetal electrocardiography, intrapartum monitoring
National Category
Surgery
Research subject
Obstetrics and Gynaecology
Identifiers
URN: urn:nbn:se:oru:diva-27162DOI: 10.1111/aogs.12009ISI: 000313714500005PubMedID: 23210634OAI: oai:DiVA.org:oru-27162DiVA, id: diva2:601908
Available from: 2013-01-30 Created: 2013-01-30 Last updated: 2018-03-06Bibliographically approved

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Hanson, Ulf

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School of Health and Medical Sciences, Örebro University, Sweden
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